• CHEMCAD Release Notes

 

 

CHEMCAD VERSION 7.1

  

 
 

VERSION 7.1.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added cricondentherm and cricondenbar to the Overall property list for reporting (3710)
  • Updated and added numerous subgroup assignments for UNIFAC and Modified UNIFAC (3045/5612/6082/6126)
  • Updated the Specify Excel Workbook dialog to display all Excel file types (.xls, .xlsx, and .xlsm) when a user browses for files via the Add Excel Range command (4414)
  • Increased the number of consecutive Undo/Redo operations that a user can perform in an open simulation (5948)

 

CC-DYNAMICS

  • Added a Vessel Reactor symbol that visually represents the incorporation of a relief device (1547)

 

 

   CHEMCAD Maintenance

  • Corrected a display issue that caused extra blank lines to appear in some sections of the Consolidated Report (6127)
  • Corrected an issue where the calculation sequence setting could not be changed from sequential modular to simultaneous modular (6135)
  • Corrected an issue where UnitOps could not be selected for the Run Selected or Run Recycles commands by clicking their flowsheet symbols (6136)
  • Corrected an issue where running UnitOps out of flowsheet sequence using the Run Recycles command could cause CHEMCAD to close unexpectedly (6137)
  • Corrected an issue where a flowsheet could become unresponsive to mouse clicks (6138)
  • Corrected a rare issue where dragging a group of flowsheet objects could result in misplaced stream lines (6149)
  • Corrected a rare issue that could occur with the [F6] Engineering Units Converter for a pressure drop field converting from millibars (6164)
  • Corrected MSRK documentation to show accurate equations (6117)
  • Corrected an issue where phase envelope plots for a simulation using the VTPR model were calculated using SRK (6148)

  

  

 

VERSION 7.1.0 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the VTPR (Volume Translated Peng-Robinson) equation of state, which also provides enthalpy and liquid density calculations (4808)
  • Added an Orifice tab to the Pipe UnitOp specifications to display pressure drop calculations (1027)
  • Enabled the use of right-click Copy and Paste commands in spreadsheet-style data entry screens (4386)
  • Redesigned the Run menu to improve access to the steady state/dynamics command (5745)
  • Improved flowsheet printing capabilities (5841)
  • Imported 31 new components from the DIPPR 2016 database (6027)
  • Added a Size option to enable larger or smaller workspace canvas size (5991)
  • Expanded UNIFAC groups to allow 32 subgroups (2606)
  • Enhanced the Thermodynamics report for electrolyte systems (2912)
  • Added the option to automatically run selected UnitOps in flowsheet convergence sequence (4931)
  • Updated the CVAL UnitOp to allow the use of Kv units (5229)
  • Updated VBClient.xls to use new VB functions for stream values (5517)
  • Added the option to specify stream composition in mole percentage (5655)
  • Revised the default potassium solid heat capacity data used in CHEMCAD (5700)
  • Improved the Find Stream and Find UnitOp commands by automatically selecting the found items on the flowsheet (5904)
  • Updated the cost index to use January 2016 values (6010)
  • Improved databox printing (6021)
  • Enhanced topology integrity by preventing changes to flowsheet objects during run operations (6055)
  • Updated the VTPR model and BIP parameters to the October 2016 paper "Present status of the group contribution equation of state VTPR and typical applications for process development" (Schmid & Gmehling) (6074)

 

 

   CHEMCAD Maintenance

  • Changed the delta P units on the Orifice Sizing dialog to display in pressure units (1076)
  • Added new logic to ensure appropriate enthalpy model selection when K-value model is changed (1298)
  • Added a message that warns users if two Node UnitOps are placed on a flowsheet next to one another (3146)
  • Corrected an issue where non-standard regional settings could cause simulations to fail (4010)
  • Corrected an issue with the Reset ID Position command (4942)
  • Added an option to stop searching for network licenses once a valid license is secured (5170)
  • Enhanced CHEMCAD’s Excel tools to work with 64-bit Excel (5352/5658)
  • Removed AutoCalc from the Calculation Sequence options (5408)
  • Corrected an issue with the liquid level calculation in DIERS (5632)
  • Corrected a convergence issue with pressure vessel relief sizing (5704)
  • Corrected unit conversion for liquid and vapor heat capacity and liquid latent heat in the Data Map and VBA features (5873)
  • Corrected an issue with the restoration of stream and UnitOp warning/error colors after running a sensitivity study (6035)
  • Corrected an issue where PSRK data was not fully installed (6046)
  • Added version handling for UAM (6062)

   CC-THERM

  • Added a Minimum LMTD correction factor specification for CC-THERM (514)
  • Corrected an issue where a U-tube bundle could be calculated as having an odd number of tubes (4221)
  • Corrected CC-THERM’s Rho V2 calculations (5084)
  • Corrected the formula used to report total LMTD for kettle and thermosyphon reboilers (5379)

   CC-DYNAMICS

  • Corrected a minor issue where the Dynamics "Restore to Initial State" command did not restore appropriate colors to UnitOp ID boxes (255)

 

 

 

VERSION 7.0.3 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Improved the speed of scrolling and zooming in large flowsheets (5896)

 

 

 



   CHEMCAD Maintenance

  • Corrected an issue that caused incorrect values to display on multi-stream reports for K-value, activity coefficient, and fugacity coefficient data (5995)
  • Corrected an issue that caused garbled characters to appear in palette titles, reports, and flowsheets
    for Japanese installations of CHEMCAD
    (5935/5936/5937)

 

 

 

VERSION 7.0.2 RELEASE NOTES

CHEMCAD Maintenance

  • Corrected an issue with flowsheet convergence that could occur after using the Run Selected UnitOps command (5969)
  • Corrected a rare issue where the program could close unexpectedly when opening a simulation imported from CHEMCAD 6 (5971)

 

 

 


   

 

 

VERSION 7.0.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Improved the [F6] unit converter feature so that typing numbers into one field automatically updates the other fields in real time (2668)

     


    CHEMCAD Maintenance

  • Corrected an issue with persistence of the Quickview pop-up window (5882)
  • Corrected an issue where in rare cases, imported CHEMCAD 6 UnitOps and streams could not be double-clicked for editing (5908)
  • Corrected an issue where specifying a UnitOp and later removing specifications could corrupt a corresponding databox or cause the program to unexpectedly close (5883, 5918)

  

VERSION 7.0.0 RELEASE NOTES
(Cumulative since 6.5.0)

CHEMCAD New Features and Enhancements

  • Made major improvements to the CHEMCAD reporting engine (4224)
  • Added CAPE-OPEN connection to HTRI Xchanger Suite (trademark of Heat Transfer Research, Inc.) (419)
  • Updated DIPPR equations, adding equation 124 to the program and expanding the parameters for equations 119 and 127 (5781)
  • Removed VSTA and VBA 6.5, and implemented VBA 7.1 (4556, 4925, 5367)
  • Simplified the .msi and .exe CHEMCAD installation process (1727, 2243, 3586, 3589, 3908, 4469, 4480, 4793)
  • Replaced ASME steam table used in CHEMCAD with the IAPWS-IF97 standard, and made this standard the default (980/5121/5191)
  • Improved Gibbs reactor calculations for liquid reactions to include activity coefficients (5282)
  • Added the capability to select the equation to use for regressing pure component data (249)
  • Improved default enthalpy model selection for K-value models (1298/5823)
  • Added capability to select temp folder location for simulations (1324/5145)
  • Added MJ/kg engineering units to the Specific Heat property (1578)
  • Enhanced Gibbs reactor to treat as inert any components that do not have atoms (2050)
  • Updated all CHEMCAD example simulations, with more instructive annotations (2686/3065/5428)
  • Added kPa G pressure unit to Engineering Units dialog options (3177)
  • Added the capability to remove items from the list of recovered files in the CHEMCAD Explorer (3503)
  • Changed the behavior of the recovered files list in the CHEMCAD Explorer, so that it appears below the recently used files list and is collapsed by default (3557)
  • Added asynchronous error event notification for VBServer (3575)
  • Improved visibility of calculated values in the Economics dialog (3617)
  • Revised Pipe UnitOp report to include internal pipe diameter (3747)
  • Added single phase option to the Flash UnitOp, replacing the former LLVF UnitOp (3898)
  • Improved the interface between CHEMCAD and the Economics tool (3981)
  • Implemented Schultes 1999 as a new packing method for mass transfer column sizing and rating (4166)
  • Added UNIFAC parameters to isoquinoline, component 841 (4358)
  • Made the 'flowsheet did not converge' message more visible to users (4454)
  • Added the capability to selectively run a UnitOp even when an unrelated UnitOp elsewhere on the flowsheet does not have inlet or outlet streams (4708)
  • Updated CHEMCAD’s costing tools to use the CE January 2012 final values by default (4724)
  • Improved convergence for internal energy flash calculation method (4782)
  • Improved convergence of Reid Vapor Pressure and flash calculation method (4791)
  • Reinstated a warning message that displays when the Gibbs element matrix is incomplete (4823)
  • Updated the NRTL BIPs for cyclohexane/n-hexane (4830)
  • Added heat of formation data for dehydroabietic acid, CAS No. 1740-19-8/component 1978 (4934)
  • Added UNIFAC subgroups for dibenzothiophene, CAS No. 132-65-0/component 1726 (4949)
  • Added stream vertices to XML output (4967)
  • Added meters of water as a pressure unit in the Engineering Units dialog, for use with Pump UnitOps (4982)
  • Added exception handling for database connection errors (4991)
  • Removed confirmation dialogs that appeared when using CHEMCAD as an OPC server (5020)
  • Changed the behavior of the CHEMCAD License Manager so that it lists expired product licenses as well as available and held licenses (5058)
  • Created new Column UnitOp symbols that can represent either partial or total condensers (5258)
  • Improved the flash algorithm for display of non-feed pure component streams (5293)
  • Added synonym MDEA for component 744 (5323)
  • Improved the flash algorithm for true species at dew point (5344)
  • Improved convergence for equilibrium reactors (5365)
  • Updated properties for lactic acid, dilactic acid, and trilactic acid (5409)
  • Improved the enthaply calcuation for high-temperature, low-pressure water properties (5417)
  • Added the capability to send stream relative humidity data using Excel Data Map (5440)
  • Improved flash convergence in the critical region for equations of state (5590)
  • Added an option to allow negative head/pressure in a performance curve for a Compressor UnitOp (5633)Updated the NRTL BIPs for 1-butanol and 1-pentanol (5666)

 

CC-THERM

  • Added new functionality to baffle specification for shell-and-tube heat exchangers (56)
  • Added the capability to designate baffle spacing on a centerline basis (2268)
  • Improved the TEMA report to consider total pressure drop, including frictional and gravitational pressure drops (2757)
  • Corrected an issue where CC-THERM could give an unreasonable pressure drop value and cause CHEMCAD to stop responding (4609)
  • Corrected an issue where a converged simulation-mode heat exchanger could incorrectly display a flash error from intermediate calculations (4675)
  • Improved the performance of CC-THERM’s simulation mode (4709)
  • Corrected an issue that could affect nozzle size calculation for a CC-THERM shell-and-tube design case (4737)
  • Corrected an issue with shell-side pressure drop calculation (4841)
  • Added a forced evaporation downward flow model (4836)
  • Corrected an issue where importing a CHEMCAD 5 simulation into CHEMCAD 6.5 could alter the number of tubesheets and cause a nonconvergence error (5046)
  • Corrected an issue with the tube-side longneck pressure calculation (5065)
  • Made CC-THERM zone-by-zone report values accessible from VBA/Excel Data Map (5169)
  • Revised the static head calculation in CC-THERM (5299)
  • Corrected an issue with plate and frame heat exchangers that caused miscalculation of effective area (5547)
  • Corrected an issue where CC-THERM could calculate incorrect stream analysis values (5653)
  • Corrected an issue that could occur with older simulations where heat exchangers had no baffles (5771/5773)

 

    CC-DYNAMICS

  • Enhanced the Save as Initial State command so that current charge and liquid level (for dynamic vessel) or reactor content (for batch reactor) are saved (3458)
  • Corrected an issue where negative flow in a cut stream prevented the flowsheet from converging (4752)
  • Added more helpful information to the messages a user sees when a dynamic simulation fails to converge (4800)
  • Changed default time units on dynamic plots to minutes (5350)
  • Corrected an issue where a compressor with multiple performance curves did not work properly in a dynamics simulation (5469)
  • Added base component option when plotting % conversion and % selectivity in the Vessel Reactor History plot (5529)
  • Renamed the Batch Reactor UnitOp to Vessel Reactor (5539)

 

 

 

 

    CHEMCAD Maintenance

  • Corrected an issue where CHEMCAD could close unexpectedly when a user’s computer either disconnects from the network or goes into sleep/hibernate mode while holding an RMS/SuperProNet License (3512/4024)
  • Corrected an issue with incorrect pressure calculation of cocurrent heat curve (4812)
  • Corrected several issues with CHEMCAD’s Economics tools (1302/1303/3981)
  • Corrected an issue that could occur when saving reactive distillation specifications (1320)
  • Corrected an issue with the Particle Size Distribution Specification dialog box (1698)
  • Corrected the composition report to properly show standard vapor volume fractions and standard vapor volume percentage (1957)
  • Corrected an issue with the sixth significant digit in user-specified stream values (4341)
  • Corrected an issue where new subcooled delta T values could not be used when "Reload Column Profile" was selected (4813)
  • Corrected the critical temperature for lithium (4814)
  • Corrected an issue where a user-specified reaction in a reactive distillation column could cause CHEMCAD to close unexpectedly (4831)
  • Corrected an issue where running a META UnitOp would, in some circumstances, cause CHEMCAD to close unexpectedly (3783)
  • Corrected an issue where attempting to save a simulation could cause CHEMCAD to close unexpectedly (4583)
  • Corrected an issue where using the SCDS “Run optimization for infeasible design specs” option could cause CHEMCAD to close unexpectedly (4606)
  • Corrected an issue where the liquid and vapor properties in a stream box were not updating properly (4614)
  • Corrected the light and heavy liquid outlets for certain Flash icons on the CC5 palette (4620)
  • Corrected an issue where read-only files did not properly show the last-modified date in the Recently Used Files list (4621)
  • Corrected an issue where a licensing problem could prevent user from either accessing the workspace or exiting CHEMCAD (4650)
  • Corrected an issue where selecting all UnitOps and running a large simulation could cause CHEMCAD to close unexpectedly (4697)
  • Corrected an issue where the Generalized Reduced Gradient regression method could in some instances cause CHEMCAD to close unexpectedly (4698)
  • Corrected an issue that could cause CHEMCAD to close unexpectedly during reaction rate regression (4701)
  • Corrected an issue where the RateRegressionRC1.cc6 example ran very slowly (4716)
  • Corrected an issue where CHEMCAD could lose a SuperPro license during a META UnitOp run (4729)
  • Corrected an issue where in rare instances, CHEMCAD could generate a crash report when closing a simulation (4731)
  • Corrected an issue where the Concentration variable for a sensitivity study or a controller UnitOp was not saved (4749/4742)
  • Corrected an issue where the non-convergence message ‘Error: singular matrix’ could result when reverse flow occurred in a cut stream (4752)
  • Corrected an issue where running an electrolyte simulation could, in certain situations, cause CHEMCAD to unexpectedly close (4769)
  • Corrected an issue that could cause the vessel sizing tool to display incorrect loading flow rate values (4783)
  • Corrected a rare issue where a mass balance error could occur in a kinetic reactor (5023)
  • Restored the Relief Valve icon to the UnitOp palette (5069)
  • Corrected an issue where a second instance of Excel could be opened in the background by the Data Map feature (5110)
  • Corrected the high temperature bound for sulfur ideal gas heat capacity (5154)
  • Corrected an issue with relief device sizing where calculations could incorrectly reflect all vapor case (5183)
  • Corrected an issue with the Hayden O’Connell model’s minimum eta value not being saved (5195)
  • Corrected an issue where the VBA Unload CHEMCAD function did not work as expected (5217/5218)
  • Corrected an issue with mass balance in the Solid Washer UnitOp (5250)
  • Corrected an issue that could cause a user to lose a SuperProNet or RMS server license while using CHEMCAD (5257/5456/5465)
  • Corrected an issue where the OPC Run Simulation function did not return values for an unconverged simulation (5300)
  • Corrected an issue where the Pipe UnitOp could change the heat transfer thermal mode when an Overall U was specified (5309)
  • Corrected an issue with the Billet and Schultes method that could affect calculations that use packing hydraulic diameter (5324)
  • Corrected an issue with mislabeled data on the thermosyphon report (5355)
  • Corrected the Larger and Smaller pipe diameter values that display in the pipe sizing report (5337)
  • Corrected an issue with incorrect reporting units for slurry density (5338/5339)
  • Corrected a calculation error in the Beggs and Brill method of the Pipe UnitOp (5343)
  • Corrected an issue with Excel reports failing to separate columns of data (5348)
  • Corrected an issue with calculation of vapor velocity and pressure drop in a thermosyphon reboiler (5356)
  • Corrected an issue with the VBA command PutStreamInCurUserUnitByID (5375)
  • Improved the CHEMCAD installation routine to ensure that drivers for licensing dongles on Windows 64-bit systems are properly updated during installation (5457)
  • Corrected an issue in Pipe UnitOp error checking (5479)
  • Corrected an issue where CHEMCAD could become non-responsive if closed while holding licenses from a License Manager server (5484)
  • Corrected an issue that could occur when editing Data Maps with no execution rules (5491)
  • Restored certain VBA functions (DefineStreamInCurUserUnit, GetStreamInInternalUnit, GetStreamInCurUserUnit, DefineStreamInInternalUnit, GetCurUserUnitString, PutStreamInCurUserUnitByID, GetStreamInCurUserUnitByID) to their pre-CHEMCAD 6.5.5 behavior, and added new functions (define_stream_current_engineering_units, get_stream_fixed_engineering_units, get_stream_current_engineering_units, define_stream_fixed_engineering_units, get_current_engineering_unit_labels, set_stream_current_engineering_units, get_stream_current_engineering_units) to the Stream and Engineering Unit interfaces (5553)
  • Corrected an issue with relief device sizing calculating incorrect vessel volume when different heads are selected (5622)
  • Corrected an issue where the SCDS initialization option “Reload column profile” could give a false positive convergence (5733)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

VERSION 6.5.7 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Improved flash convergence in the critical region for equations of state (5590)
  • Added an option to allow negative head/pressure in a performance curve for a Compressor UnitOp (5633)

 

CC-THERM

  • Corrected an issue with plate and frame heat exchangers that caused miscalculation of effective area (5547)

 

 

 

 

 

 

 

 

    CHEMCAD Maintenance

  • Corrected an issue where a second instance of Excel could be opened in the background by the Data Map feature (5110)
  • Restored certain VBA functions (DefineStreamInCurUserUnit, GetStreamInInternalUnit, GetStreamInCurUserUnit, DefineStreamInInternalUnit, GetCurUserUnitString, PutStreamInCurUserUnitByID, GetStreamInCurUserUnitByID) to their pre-CHEMCAD 6.5.5 behavior, and added new functions (define_stream_current_engineering_units, get_stream_fixed_engineering_units, get_stream_current_engineering_units, define_stream_fixed_engineering_units, get_current_engineering_unit_labels, set_stream_current_engineering_units, get_stream_current_engineering_units) to the Stream and Engineering Unit interfaces (5553)
  • Corrected an issue with relief device sizing calculating incorrect vessel volume when different heads are selected (5622)

 

 

VERSION 6.5.6 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the capability to send stream relative humidity data using Excel Data Map (5440)

 

CC-DYNAMICS

  • Corrected an issue where a compressor with multiple performance curves did not work properly in a dynamics simulation (5469)

 

 

 

 

 

 

    CHEMCAD Maintenance

  • Corrected an issue that could cause a user to lose a SuperProNet or RMS server license while using CHEMCAD (5257/5456/5465)
  • Improved the CHEMCAD installation routine to ensure that drivers for licensing dongles on Windows 64-bit systems are properly updated during installation (5457)
  • Corrected an issue where CHEMCAD could become non-responsive if closed while holding licenses from a License Manager server (5484)

 

 

 

VERSION 6.5.5 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Removed VSTA and VBA 6.5, and implemented VBA 7.1 (4556, 4925, 5367)
  • Simplified the .msi and .exe CHEMCAD installation process (1727, 2243, 3586, 3589, 3908, 4469, 4480, 4793)
  • Implemented Schultes 1999 as a new packing method for mass transfer column sizing and rating (4166)
  • Improved the enthaply calcuation for high-temperature, low-pressure water properties (5417)

 

 

 

 

    CHEMCAD Maintenance

  • Corrected an issue with mass balance in the Solid Washer UnitOp (5250)
  • Corrected an issue with incorrect reporting units for slurry density (5338/5339)
  • Corrected an issue with Excel reports failing to separate columns of data (5348)
  • Corrected an issue with the VBA command PutStreamInCurUserUnitByID (5375)

 

 

 

 

 

VERSION 6.5.4 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Replaced ASME steam table used in CHEMCAD with the IAPWS-IF97 standard, and made this standard the default (980/5121/5191)
  • Improved Gibbs reactor calculations for liquid reactions to include activity coefficients (5282)
  • Changed the behavior of the CHEMCAD License Manager so that it lists expired product licenses as well as available and held licenses (5058)
  • Improved the flash algorithm for display of non-feed pure component streams (5293)
  • Improved the flash algorithm for true species at dew point (5344)
  • Improved convergence for equilibrium reactors (5365)

CHEMCAD Maintenance

  • Corrected an issue where CHEMCAD could close unexpectedly when a user’s computer either disconnects from the network or goes into sleep/hibernate mode while holding an RMS/SuperProNet License (3512/4024)
  • Restored the Relief Valve icon to the UnitOp palette (5069)
  • Corrected an issue where the VBA Unload CHEMCAD function did not work as expected (5217/5218)
  • Corrected an issue where the OPC Run Simulation function did not return values for an unconverged simulation (5300)
  • Corrected an issue where the Pipe UnitOp could change the heat transfer thermal mode when an Overall U was specified (5309)
  • Corrected an issue with the Billet and Schultes method that could affect calculations that use packing hydraulic diameter (5324)
  • Corrected the Larger and Smaller pipe diameter values that display in the pipe sizing report (5337)
  • Corrected a calculation error in the Beggs and Brill method of the Pipe UnitOp (5343)
  • Corrected an issue with mislabeled data on the thermosyphon report (5355)
  • Corrected an issue with calculation of vapor velocity and pressure drop in a thermosyphon reboiler (5356)

 

 

 



     CC-THERM

  • Corrected an issue with the tube-side longneck pressure calculation (5065)
  • Made CC-THERM zone-by-zone report values accessible from VBA/Excel Data Map (5169)
  • Revised the static head calculation in CC-THERM (5299)

 

     CC-DYNAMICS

  • Changed default time units on dynamic plots to minutes (5350)

VERSION 6.5.3 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the capability to select the equation to use for regressing pure component data (249)
  • Added asynchronous error event notification for VBServer (3575)
  • Made the 'flowsheet did not converge' message more visible to users (4454)
  • Added stream vertices to XML output (4967)
  • Added exception handling for database connection errors (4991)
  • Removed confirmation dialogs that appeared when using CHEMCAD as an OPC server (5020)

CHEMCAD Maintenance

  • Corrected an issue with the Particle Size Distribution Specification dialog box (1698)
  • Corrected an issue where new subcooled delta T values could not be used when "Reload Column Profile" was selected (4813)
  • Corrected the critical temperature for lithium (4814)

 

  

 

     CC-THERM

  • Added new functionality to baffle specification for shell-and-tube heat exchangers (56)
  • Added the capability to designate baffle spacing on a centerline basis (2268)
  • Corrected an issue where importing a CHEMCAD 5 simulation into CHEMCAD 6.5 could alter the number of tubesheets and cause a nonconvergence error (5046)

     CC-DYNAMICS

  • Corrected an issue where negative flow in a cut stream prevented the flowsheet from converging (4752)

 

 

 

 

 

 

 

 

 

VERSION 6.5.2 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Enhanced Gibbs reactor to treat as inert any components that do not have atoms (2050)
  • Reinstated a warning message that displays when the Gibbs element matrix is incomplete (4823)
  • Improved convergence for internal energy flash calculation method (4782)
  • Improved convergence of Reid Vapor Pressure and flash calculation method (4791)

 

CHEMCAD Maintenance

  • Corrected an issue with incorrect pressure calculation of cocurrent heat curve (4812)
  • Corrected an issue where a user-specified reaction in a reactive distillation column could cause CHEMCAD to close unexpectedly (4831)

 

 

 

 

 

     CC-THERM

  • Improved the TEMA report to consider total pressure drop, including frictional and gravitational pressure drops (2757)
  • Corrected an issue with shell-side pressure drop calculation (4841)
  • Added a forced evaporation downward flow model (4836)

 

     CC-DYNAMICS

  • Enhanced the Save as Initial State command so that current charge and liquid level (for dynamic vessel) or reactor content (for batch reactor) are saved (3458)
  • Added more helpful information to the messages a user sees when a dynamic simulation fails to converge (4800)

VERSION 6.5.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Improved visibility of calculated values in the Economics dialog (3617)
  • Added the capability to selectively run a UnitOp even when an unrelated UnitOp elsewhere on the flowsheet does not have inlet or outlet streams (4708)
  • Updated CHEMCAD’s costing tools to use the CE January 2012 final values by default (4724)

CHEMCAD Maintenance

  • Corrected several issues with CHEMCAD’s Economics tools (1302/1303/3981)
  • Corrected an issue where running a META UnitOp would, in some circumstances, cause CHEMCAD to close unexpectedly (3783)
  • Corrected an issue where attempting to save a simulation could cause CHEMCAD to close unexpectedly (4583)
  • Corrected an issue where using the SCDS “Run optimization for infeasible design specs” option could cause CHEMCAD to close unexpectedly (4606)
  • Corrected an issue where the liquid and vapor properties in a stream box were not updating properly (4614)
  • Corrected the light and heavy liquid outlets for certain Flash icons on the CC5 palette (4620)
  • Corrected an issue where read-only files did not properly show the last-modified date in the Recently Used Files list (4621)
  • Corrected an issue where a licensing problem could prevent user from either accessing the workspace or exiting CHEMCAD (4650)
  • Corrected an issue where selecting all UnitOps and running a large simulation could cause CHEMCAD to close unexpectedly (4697)
  • Corrected an issue where the Generalized Reduced Gradient regression method could in some instances cause CHEMCAD to close unexpectedly (4698)

 

 

 

 

     CHEMCAD Maintenance, continued

  • Corrected an issue that could cause CHEMCAD to close unexpectedly during reaction rate regression (4701)
  • Corrected an issue where the RateRegressionRC1.cc6 example ran very slowly (4716)
  • Corrected an issue where CHEMCAD could lose a SuperPro license during a META UnitOp run (4729)
  • Corrected an issue where in rare instances, CHEMCAD could generate a crash report when closing a simulation (4731)
  • Corrected an issue where the Concentration variable for a sensitivity study or a controller UnitOp was not saved (4749/4742)
  • Corrected an issue where the non-convergence message ‘Error: singular matrix’ could result when reverse flow occurred in a cut stream (4752)
  • Corrected an issue where running an electrolyte simulation could, in certain situations, cause CHEMCAD to unexpectedly close (4769)
  • Corrected an issue that could cause the vessel sizing tool to display incorrect loading flow rate values (4783)

     CC-THERM

  • Corrected an issue where CC-THERM could give an unreasonable pressure drop value and cause CHEMCAD to stop responding (4609)
  • Corrected an issue where a converged simulation-mode heat exchanger could incorrectly display a flash error from intermediate calculations (4675)
  • Improved the performance of CC-THERM’s simulation mode (4709)
  • Corrected an issue that could affect nozzle size calculation for a CC-THERM shell-and-tube design case (4737)

 

VERSION 6.5.0 RELEASE NOTES
(Cumulative since 6.4.0)

CHEMCAD New Features and Enhancements

  • Added the Hayden O’Connell thermodynamic option for vapor phase correction (3740)
  • Made an .msi package of the CHEMCAD installer widely available, to support administrative installations
  • Enhanced component database to enable users to enter notes when adding components (2159)
  • Added Fugacity, Gamma, and K values to Quickview and all stream reports (2228)
  • Combined the Pressure Drop and Pressure Out specifications for heat exchangers (2321)
  • Created a self-contained 64-bit CHEMCAD installer (3189)
  • Created a new UnitOp (Relief Valve) to handle relief devices in flow-balanced simulations (3879)
  • Enhanced the Node UnitOp to allow specification of fixed mass/volume rate at a midstream node (549)
  • Enhanced Kinetic Reactor UnitOp so that users can specify which reactions are deleted (1456)
  • Enhanced the Heat Exchanger Options dialog box to enable negative pressure entry for process-side inlet (1977)
  • Removed the heat exchanger heat duty calculated value from rigorous simulation mode (1997)
  • Added two new symbols to the Node sub-palette (a T shape and a cross shape), for combining flow (2128)
  • Enhanced the Mixer UnitOp to notify users when the unit is bypassed due to feed streams not being defined (2623)
  • Implemented Billet and Schultes Sulzer Metal BX/Sulzer BX packing parameters (3465)
  • Added the capability to view which Joback groups were used to create a user component (3494)
  • Expanded the information given when a user is notified of a component change in the database (3506)
  • Changed the behavior of the Heat Exchanger UnitOp specification screen, so that a user cannot enter two specifications if U and A are specified (3685)
  • Enhanced the Sensitivity Study feature so that any electrolyte non-convergence errors appear in the Messages window (3782)
  • Enhanced the Excel Data Map feature to work with Excel 2007/2010 workbooks (3792)
  • Added the Batch Reactor Motor Power variable into the RAMP UnitOp (3874)
  • Expanded the RVAL UnitOp to handle two-phase and liquid-only venting (3913)
  • Added a more user-friendly Property description to the Update Components dialog box (3955)
  • Changed the inlet and outlet pipe diameters on the thermosyphon reboiler specifications to be the inner diameter (ID) (4029)
  • Added Radius of Gyration to the CHEMCAD physical properties database (4056)
  • Improved thermodynamic models to aid column convergence (4073)
  • Improved the recently added Relief Device UnitOp so that backflow is not allowed (4100)
  • Changed the Henry's constant plot to allow the use of pure components (4180)
  • Regressed Henry's constants for air (4181)
  • Added UNIFAC group data for 1-Pentylnaphthalene to the component database (4344)
  • Added error checking to Sensitivity Study user input (4483)
  • Added a Flash UnitOp icon that allows up to six inlets  (4590)
  • Added synonyms for about 500 components in the CHEMCAD component database (4593)

CHEMCAD Maintenance

  • Corrected an issue with simulations not saving after creation of components using the Joback method (4144)
  • Corrected issues with the META UnitOp failing to run in certain circumstances (3783/4067)
  • Corrected an issue where the version 6.3.2 .msi displayed the “Windows is configuring CHEMCAD” dialog every time a user logged in (3735)
  • Corrected an issue where CHEMCAD 6.3 could fail to uninstall if installed from .msi via GPO action (3745)
  • Corrected an issue where user-added (Excel or VBA) kinetic reactions using mass-based stoichiometry were incorrectly calculating heat of reaction and heat duty (3927)
  • Corrected the vapor pressure for Triolein (ID: 2251) in the CHEMCAD component database (3797)
  • Corrected an issue where using the Copy and Paste commands to place a CHEMCAD flowsheet image into another program could cause the simulation to become corrupted (3336)
  • Corrected an issue where batch operation step data was exported using incorrect units (690)
  • Corrected an issue where Control Valve UnitOp in “Calc Pout” mode could fail without triggering an error message (823)
  • Corrected an issue with stream arrowheads facing unexpected directions on the flowsheet (1310)
  • Corrected an issue where heat of combustion values were incorrect in reports (1629)
  • Corrected an issue with the process type on the Input Data Report (2106)
  • Corrected an issue where the relief valve sizing tool generated an unnecessary report after DIERS calculations were interrupted or stopped (2160)
  • Corrected an issue where multiple Edit Streams dialogs could be opened at once, causing CHEMCAD to close unexpectedly (2572)
  • Corrected an issue with creation and editing of ternary interaction parameters (TIPs) under the Pitzer method (3267)
  • Corrected an issue where SCDS costing did not properly convert packing price (3481)
  • Corrected an issue where the CVAL UnitOp gave a ‘100% open’ warning message when no such condition existed (3566)
  • Renamed Specific Heat field in the Engineering Units Converter tool (F6) dialog to Heat Capacity (3579)
  • Corrected an issue where an Excel file could be generated for UnitOps not matching the selected report (3641)
  • Corrected the thermodynamics report to show the BIPs used by GMAC (3657)
  • Corrected issues with the META UnitOp (3783)
  • Corrected an issue where a long stream name could cause CHEMCAD to close unexpectedly (3799)
  • Updated MSRK parameters for components 308, 1634, 1710, 1712, and 1719 (3845)
  • Corrected the UNIFAC subgroups for some entries in the component database (3861)
  • Corrected an issue where the Screen Builder utility could unexpectedly close when a user attempted to edit a VBscript dialog (3863)
  • Corrected an issue that prevented users of Windows 7 64-bit OS from installing CHEMCAD 6.4. (3889)

 

 

 

 

 

 

 

     CHEMCAD Maintenance, continued

  • Corrected an issue where, in rare cases, the Thermodynamics report did not display BIPs (3902)
  • Corrected an issue that prevented the Dialog Editor (ScrBuild.exe) from launching in some circumstances (3905)
  • Corrected an issue where vibration criteria values were being reported incorrectly in the Excel report viewer (3909)
  • Corrected an issue where CHEMCAD 6.4.0 and earlier could unexpectedly close in shell-and-tube simulations with very small flow and enthalpy near zero (3911)
  • Corrected an issue where dry properties would appear in stream boxes only if the UOPK option was checked (3931)
  • Corrected an issue where E coefficients were not saved for certain transport properties in user-added components (3941)
  • Corrected an issue that in some cases prevented CHEMCAD licensing from working properly over a WAN (3975)
  • Corrected an issue where a Relief Device could convert the reported calculated nozzle area incorrectly into inches (3988)
  • Corrected an issue where generating a report from Simulation Reports could cause CHEMCAD to hang (4001)
  • Corrected an issue where a cloned component did not retain the assigned Standard Name (4004)
  • Corrected an issue where the name of a cloned user-specified component did not initially include the parent component’s name (4059)
  • Corrected an issue with Gibbs reactor not converging when only three components were available for a reaction (4065)
  • Corrected an issue where attempting to run a pipe with multiple segments in mode 5 could cause CHEMCAD to close unexpectedly (4069)
  • Corrected an issue with the Note dialog box reporting the Normal Boiling Point in incorrect units (4071)
  • Corrected an issue where flash algorithm could fail to converge for high-flow situations (4079)
  • Corrected an issue where a compressor, expander, or pump UnitOp template could add a faulty row of numbers to a performance curve (4110)
  • Corrected an issue where the CHEMCAD Explorer showed UnitOp ID -1 for a compressor, expander, or pump used with a performance curve template (4112)
  • Corrected an issue where a heat exchanger could be run in utility mode with no initial estimation for utility streams (4154)
  • Corrected an issue where the TPXY plot did not accept a negative relative temperature (4157)
  • Corrected an issue where a dynamic simulation could encounter problems with LMTD calculation in a dynamic vessel (4160)
  • Corrected an issue where electrolyte precipitate did not leave a dynamic vessel properly (4170)
  • Corrected an issue where a batch reactor could fail to report a mass balance error (4187)
  • Corrected an issue with the enthalpy plot that occurred for a batch reactor with an internal coil (4188)
  • Corrected an issue where a controller running with a batch reactor caused CHEMCAD to close unexpectedly (4293)
  • Corrected an issue where the pH value displayed in the stream tooltip did not match the pH value in the stream properties report or controller UnitOp (4317)
  • Corrected a minor conversion issue that occurred when plotting a D2887 curve (4361)
  • Corrected an issue where a simulation involving both HF and electrolytes could, in rare circumstances, calculate an unusable enthalpy value (4425)
  • Corrected critical pressure and temperature data for alkanes C16-C20 in the CHEMCAD component database (4569)

     CC-THERM

  • Corrected an issue with CC-THERM simulations switching to the Kern model in the presence of shell-side fluids that do not change phase (4243)
  • Added a line in the TEMA report to explain that reported pressure drop is frictional only (1029)
  • Added tube thickness data to CC-THERM report (2396)
  • Corrected an issue where the baffle cut limit warning did not show valid bounds for an area cut (3652)
  • Corrected an issue where a shell-and-tube heat exchanger could be run in simulation mode with a thermosyphon, kettle reboiler, or knock-back condenser (3865)
  • Corrected an issue with calculated MTD for counter-current plate heat exchangers (3884)
  • Corrected a convergence issue for shell-and-tube exchangers where the Reynolds number is less than 3 (3890)
  • Corrected an issue where “The minimum shell diameter is 3 inches” error message could incorrectly result from running or sizing a kettle reboiler (3918)
  • Corrected an issue where bundle pressure drop was reported differently for different baffle types, for a heat exchanger with no baffles (4027)
  • Corrected an issue where CC-THERM incorrectly displayed an error message for a shell-side horizontal condenser in simulation mode (4189)
  • Corrected an issue with incorrectly calculated meter-to-foot conversion (4193)
  • Corrected an error that caused the fouling rate for one side of a heat exchanger to zero out the fouling rate for the other side (4240)
  • Corrected an issue where fouling rating for double-pipe heat exchanger could give very large fouling factor values (4259)
  • Corrected a rare file issue that could cause a CC-THERM simulation to close CHEMCAD unexpectedly (4307)
  • Corrected a minor issue in inlet/outlet nozzle pressure drop calculations (4432)
  • Corrected an issue where the nozzle inner diameter for a thermosyphon was updated to match the specified pipe outer diameter (4434)
  • Corrected an issue where in rare instances, saving a simulation could produce a “System resource exceeded” message (4583)
  • Corrected an issue with the calculation of two-phase shell-side pressure drop (4596)
  • Corrected minimum tube pitch standards for TEMA C (4601)
  • Added the capability for user-specified tube sheet thickness (4603)
  • Changed the file format for CC-THERM cases, to accommodate future program enhancements; cases opened in CHEMCAD 6.5 will automatically convert to the new format, and should then be opened only with 6.5 (or later versions) to preserve data changes (4612)
  • Corrected the CAS number for Thymol (4616)
  • Corrected the CAS number for CaCl2, ID 1185 (4617)
  • Corrected the light and heavy liquid outlets for certain Flash icons on the CC5 palette (4620)
  • Corrected an issue where zone LMTD approaching zero could cause problems with a CC-THERM simulation (4641)
  • Corrected an issue where CHEMCAD could become nonresponsive due to problematic CC-THERM  pressure-drop values (4655)
  • Corrected an issue where a DVSL UnitOp with initial liquid levels of zero could prevent a simulation from running (4658)
  • Corrected an issue where running a META UnitOp could in some cases produce a “No process unit specified” message and fail to run the child simulation (4662)

 

 

 

 

VERSION 6.4.0 RELEASE NOTES
(Cumulative since 6.3.0)

CHEMCAD New Features and Enhancements

  • Replaced License Manager 7.2 with RMS License Manager (3364)
  • Added the capability to use commuter licensing from non-administrator accounts with RMS (2262)
  • Added a new operating mode, Thermo Acceleration, which can decrease calculation time for complex simulations (2841)
  • Improved convergence for multiple solid electrolyte systems (3351)
  • Added the capability to enter electrolyte density, viscosity, diffusivity, Henry's constants, and BIPs to a user database (2821/2846/2847/2848/2849)
  • Improved reporting of critical flow errors in piping networks (3121)
  • Added the capability to select an equation of state for use with Poynting factor (3151)
  • Added the capability for simultaneous heat transfer and mass transfer models in distillation columns (3610)
  • Added the capability to regress BIPs from partial pressure data (3306)
  • Added a section to the Topology Report that lists stream and UnitOp relationships (such as controllers, stream references, streams copied from another flowsheet, or META units) (244)
  • Improved and extended solubility for sodium carbonate and its hydrates in the mNRTL electrolytes package (483)
  • Revised Henry’s constant coefficients for chlorine (888)
  • Added the capability to specify which reaction(s) are deleted for reactor UnitOps (1456)
  • Improved flowsheet error detection to reduce the incidence of duplicate stream ID errors (1924)
  • Improved the Compressor UnitOp so that the Pressure Out field is cleared when not needed (2139)
  • Added new BIPs for the water-HBr-bromine electrolyte system (2529/2530)
  • Added 56 liquid-liquid equilibrium BIPs to the CHEMCAD database (2590)
  • Improved the heat curve algorithm for bubble-dewpoint systems (2758)
  • Improved the default class selection during creation of a new user-defined electrolyte component (2862)
  • Renamed the Alt SI and SI engineering unit profiles to Common SI and Formal SI, respectively (2954)
  • Added the capability to perform an administrative installation of CHEMCAD from an .msi file (2967)
  • Added a warning for the Compressor UnitOp if inlet or outlet vapor fraction is less than 1 (2983)
  • Improved convergence for node flowsheets where some UnitOps are near critical flow (3014)
  • Added an option to use the European standard symbol for the Pump UnitOp (3185)
  • Enhanced VBClient.xls to enable reporting of unconverged UnitOps (3209)
  • Revised ideal gas enthalpy for new components using the Joback method (3213)
  • Improved electrolyte regression for CaCl2 systems (3230)
  • Added a unit label to the Sherwood-Eckert packing factor in column sizing (3294)
  • Enhanced stream properties to allow calculation of entropy for a solid (3312)
  • Enhanced the CHEMCAD Hydrates tool to enable uses to enter a temperature or pressure range and create plots (3339)
  • Improved convergence for multiple solid electrolyte systems (3351)
  • Enhanced the CHEMCAD Explorer so that stream numbers are still displayed, even after streams are named (3353)
  • Added a 'Liquid & Solid' section to the Tray Properties report (3389)
  • Improved the Kinetic Reactor UnitOp by adding the capability for solid-gas reactions (3400)
  • Added the capability to set global stream and UnitOp starting ID numbers (3411)
  • Added the capability to set display preferences for the Run Trace window (3412)
  • Added the capability to set a keyboard shortcut for drawing streams (3414)
  • Changed the behavior of the TP Box so that the default selection is Select Streams, rather than All Streams (3477)
  • Changed the TP Box feature so that it displays a negative sign to indicate reverse flow when present (3478)
  • Added BWRS BIPs to the Thermodynamics report (3523)
  • Added a new and improved OTS amine simulation to the CHEMCAD example library (3570)
  • Added warnings to costing algorithms to alert users of unusually large or small equipment (3574)
  • Added the capability to create a keyboard shortcut for the Change Stream ID command (3614)

CHEMCAD Maintenance

  • Added missing polynomial ideal gas heat capacity parameters to approximately 350 components (may trigger component update messages; can affect calculations for Gibbs reactors) (3836)
  • Corrected an issue with dynamic simulations saved in an elapsed-time condition (3080)
  • Corrected a problem where user-edited equation-of-state BIPs were not used (3110/3119)
  • Corrected an issue with the legacy option for ASME steam table which could occur above critical temperature of water (3944)
  • Removed duplicate entries from CHEMCAD component databases (1081/2132)
  • Corrected an issue where '%' in stream name caused problems with simulation (2252)
  • Corrected an issue with the Symbol Editor utility displaying a failed registry message (2905)
  • Added missing PRSV BIPs to the component database (3010)
  • Corrected an issue where adding system BIPs using the Select Database BIP dialog box did not prompt for reflash (3128)
  • Corrected an issue where flowsheet time units could interfere with reactive distillation (3147)
  • Corrected an issue with SCDS not supporting electrolyte (true species) reactions in mole fraction bases (3153)
  • Corrected an issue where running an SCDS column using condenser mode 9 (Two components molar flow ratio) could cause CHEMCAD to close unexpectedly (3160)
  • Corrected a minor issue with air cooler mean temperature difference calculation (3196)
  • Corrected the use of SRK BIPs for component pairs in MSRK simulations with user-added MSRK BIPs (3220)
  • Corrected an issue with the META UnitOp (3222)
  • Corrected an issue with the Close All Charts command leaving equilateral triangle charts open (3296)

 

 

     CHEMCAD Maintenance, continued

  • Corrected an issue with stream templates that were created in CHEMCAD 6.2 (3303)
  • Corrected a rare issue that could cause CHEMCAD to stall during launch while initializing VBA (3346)
  • Corrected an issue with the heating value for solid components (3401)
  • Corrected an issue where CHEMCAD could incorrectly calculate a vapor fraction of 0 above its critical temperature for a component with a Henry's constant (3434)
  • Corrected an issue with CHEMCAD automation menu.xla for 64-bit Office 2010 (3437)
  • Corrected an issue with the Spec Sheet report so that streams numbered higher than 255 are included (3485)
  • Corrected an issue with the Kirkbride equation in the shortcut column UnitOp (3501)
  • Corrected an issue where a clean installation of version 6.3.2.4358 could give error 429, affecting Excel automation (resolved with release of version 6.3.2.4389) (3520)
  • Corrected an issue where, in some cases, a plate heat exchanger would not report a failure to converge (3531)
  • Corrected an issue which, in rare circumstances, could cause a very large flowsheet to close unexpectedly (3567)
  • Corrected an issue with the Mixer electrolyte option where a mixer could in rare circumstances be out of mass balance without a warning (3711)
  • Corrected an issue where running a simulation from the COM interface could disable user interaction (3739)
  • Corrected the UNIFAC subgroup for 4-Hydroxyacetophenone in the CHEMCAD component database (3751)
  • Corrected an issue where CHEMCAD could unexpectedly close upon use of a VBA electrolyte mixing rule (3758)
  • Corrected the plotting of heat curves using the global thermo model in place of a specified local thermo model (3762)
  • Corrected an issue where standard heat capacity and Henry’s constants entered during electrolyte component creation were not saved (3784)
  • Corrected an issue where editing intermediate streams could cause inconsistencies in electrolyte true species simulations (3817)
  • Corrected a unit conversion error that could occur when recording solid heat capacity in a sensitivity study (3824)
  • Corrected an issue where a user might receive an error message about saving modified data when editing a user-added component (3933)
  • Corrected an issue with incorrect calculation of heat transfer coefficient for pipe heat transfer model with no vapor flow (4145)

     CC-THERM

  • Improved zone temperature calculation for horizontal tube-side condensation with shell-side evaporation (3468)
  • Added help documentation for plate heat exchangers, double pipe heat exchangers, and air coolers (2283/2284/2285)
  • Added a new configuration option, with two inlets and one outlet, to the J (divided flow) shell model (1636)
  • Corrected an issue where the Heat Capacity unit label was incorrectly displayed on the Excel report viewer (2783)
  • Added the Reynolds number for shell-side stream analysis and Kern method to CC-THERM reports (2952)
  • Corrected an issue with calculation of number of tubes for a kettle reboiler based on shell diameter (2995)
  • Added new options to the Nozzle dialog for an X-shell with a three-nozzle connection (3015)
  • Corrected an issue where outlet stream conditions failed to update for a one-sided heat exchanger (3127)
  • Corrected an issue with calculation of tube-side heat transfer coefficient for laminar flow with VDI Nusselt Number Correlation selected (3141)
  • Corrected tube count for no-tube-in-window baffle case (3238)
  • Corrected an issue where a superheated vapor error message could prevent running a knockback condenser (3265)
  • Corrected an issue where an error message prevented CC-THERM from running a heat exchanger with liquid-stratified sub-cooling flow (3302)
  • Added the capability to access fouling factors from Excel Data Maps, controllers, sensitivity studies, etc. (3309)
  • Corrected an issue with large static head triggering a message about inadequate driving force (3338)
  • Changed the default value for the outlet mole vapor fraction in the Thermosyphon Reboiler specification dialog (3342)
  • Added protection for heat curve generation when relevant physical property data is undefined (3348)
  • Corrected an issue with TEMA sheet reporting the wrong flow for knockback condensers in some circumstances (3403)
  • Added a new convergence method and algorithm for CC-THERM stream analysis case (3445)
  • Corrected an issue where selection of TEMA B, TEMA C, or ASME class for a shell-side single- or two-phase exchanger with Bell-Delaware method resulted in an incorrect pressure drop calculation (3559)
  • Added a pressure drop calculation for multiple inlet and outlet nozzles in an air cooler (3591)
  • Corrected an issue with conversion between diameter and area baffle cut percentages (3642)

     CC-DYNAMICS

  • Improved dynamic column performance (3565)
  • Corrected an issue with BREA 'KREA file not found' message for zero reactions (1235)
  • Added the capability to run Excel Data Maps for each time step in dynamics mode (1444)
  • Added warnings for PID controller measured variable outside min/max range (3210)
  • Added a new and improved OTS amine simulation to the CHEMCAD example library (3570)

     CC-BATCH

  • Corrected an issue where pot charge could be deleted as a result of inserting a new first step for Batch Column (2453)
  • Improved convergence of batch distillation using SCDS method (3212)

 

VERSION 6.3.0 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the capability to specify a chemical reaction enhancement factor for mass transfer distillation calculations (2842)
  • Added an auto-estimation mode for the Batch Distillation Column UnitOp to improve column convergence (2896)
  • Enhanced distillation curve characterization to use the standard stream selection dialog box (516)
  • Added a warning for a one-sided heat exchanger so that users will know if utility rating entries are overriding Specifications tab entries (1151)
  • Added the Browse capability to assist in finding a targeted Excel Data Map (1567/2772)
  • Enhanced the Composite Curves feature to make shifting composite curves optional (2763)
  • Enhanced stream properties to allow entropy to have units of absolute temperature (°R, K) (2808)
  • Added the capability to rename an Excel Data Map while it is open in CHEMCAD (2852)
  • Enhanced the RAMP UnitOp so that it no longer generates errors when disabled (2878)

CHEMCAD Maintenance

  • Corrected an issue where a Stream Reference UnitOp in bypass mode could trigger a ‘No specifications' error message (1959)
  • Corrected an issue with the Predictive Crystallizer example simulation so that the Excel UnitOp runs properly (2547)
  • Corrected an issue where CHEMCAD could close unexpectedly if left open and idle for long periods of time (2819)
  • Corrected an issue where imported user electrolyte components were not recognized as electrolytes (2860)
  • Corrected an issue where the Control Valve UnitOp in ‘Fix flow and position' mode could recalculate the flow rate instead of pressure (2863)

 

 

 

    CC-THERM

  • Changed the default nozzle sizes in CC-THERM to standard pipe sizes (2845)
  • Corrected an issue where deleting Excel Data Map rows could cause difficulties with the Data Map (2855)
  • Improved the default inlet and outlet baffle spacing for new CC-THERM simulations (2857)
  • Corrected an issue where a heat exchanger in fouling rating mode, with two or more parallel shells, could generate different service and calculated heat transfer coefficients (2886)
  • Added the LMTD correction factor to air cooler reports (1479)
  • Added Stream Analysis for segmental baffles with no tubes in window (2518)
  • Added Window, End, and Crossing velocities to the tabulated report for baffles with no tubes in window (2523)
  • Corrected an issue with fouling values being assigned to the wrong side of an air cooler for an air-side fouling rating (2662)
  • Disabled certain calculated fields when the Heat Exchanger UnitOp is in simulation mode, as these values are not relevant in that mode (2804)
  • Corrected an issue where CC-THERM reported inconsistent values for density on the TEMA report in MS Word or the internal report viewer (2815)
  • Corrected an issue where creating a TEMA sheet could cause CHEMCAD to close unexpectedly (2818)
  • Corrected an issue where a pinch warning appeared when the number of shells in series was greater than 1 for a Heat Exchanger UnitOp in simulation mode (2838)

VERSION 6.2.2 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the capability to use COM objects to control instances of CHEMCAD (591/2512)
  • Added the Browse capability to assist in finding a targeted Excel DataMap (1567/2772)
  • Added the capability to perform a data reconciliation from the xlCHEMCAD menu in Excel (1991)
  • Added the capability install CHEMCAD silently (2092)
  • Added the Format > Starting IDs command, which enables the user to set starting ID ranges for streams and UnitOps (2157)
  • Added a comment field for Excel DataMap (2469)
  • Added the capability to copy and paste values within a DataMap (2486)
  • Added the capability to store BIPs in a database other than NRTL, Wilson, SRK, PR, or BWRS (2602)
  • Improved the performance of local thermodynamic settings (2634)
  • Added the capability to shift hot and cold composite curves to achieve minimum delta T (2635)
  • Added the capability to load a simulation into Excel as read-only from the xlCHEMCAD menu (2638)
  • Added new carbon capture examples to CHEMCAD installation (2673)
  • Enhanced the vessel pressure graph for a dynamic run by adding a y-axis title (2691)

 

  CHEMCAD Maintenance

  • Corrected an issue, introduced with version 6.2.1, which could cause flash errors in systems with dissolved supercritical gases in water (2761)
  • Corrected an issue that occurred when a user specified 0 °C or 0 °F for a TPXY plot based on constant temperature (1064)
  • Corrected an issue with stream or UnitOp groups not updating ID numbers (1078)
  • Corrected an issue with improperly displayed plots and reports via Terminal Server (2103)
  • Corrected a data entry issue in the crude oil database (2237)
  • Corrected an issue with the xlCHEMCAD menu in Excel not initializing for Vista users (2471/2485)
  • Corrected an issue with fouling values being assigned to the wrong side of an air cooler for an air-side fouling rating (2662)
  • Corrected an issue where initial vessel pressure and liquid pressure could be inconsistent when static pressure was specified (2744)
  • Corrected an issue where CHEMCAD simulations could fail to save when opened from and saved back to a USB drive (2778)
    Removed redundant items from the View > Flowsheet Settings submenu (2812)
  • Corrected an issue where subcooled liquid could improperly flash (only occurred in test versions) (2867)

  CC-THERM

  • Removed improper baffle cut restrictions on double and triple segmental baffles (2316)
  • Corrected an issue with the reporting of generic turbulator data in Excel (2378)
  • Corrected an issue where the wrong condensing type was reported for the VDI method (2475)
  • Corrected an issue with the fouling ratings mode for air coolers (2657)
  • Corrected an issue with co-current and vertical knock-back condensers displaying incorrect inlet vapor velocity (2697)
  • Corrected an issue where a double-pipe simulation with a user-specified fin tube did not converge (2711)
  • Corrected an issue with air cooler heat curve editing (2755)
  • Added an error message that displays when no liquid is present in a kettle reboiler (2779)
  • Corrected an issue where the General Specifications dialog box sometimes failed to appear when needed for a kettle reboiler (2780)
   
     

VERSION 6.2.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Added the LMTD correction factor to air cooler reports (1479)
  • Added new 'read-only' LoadSim() function to COM API (1988)
  • Added the Pikes Peak Selexol simulation to the CHEMCAD examples (2196)
  • Added the capability to set legacy CHEMCAD 5 settings from the Options menu (2296)
  • Added the capability to use the BWRS thermodynamic method in CHEMCAD 6 (2331)
  • Added the capability to show/hide all stream names in a simulation (2350)
  • Created a new recycle cut stream algorithm to take controllers into account (2497)
  • Added the Ideal Cp/Cv property for Data Map and VBA (2517)
  • Added Stream Analysis for segmental baffles with no tubes in window (2518)
  • Added Window, End, and Crossing velocities to the tabulated report for baffles with no tubes in window (2523)
  • Added the capability to regress electrolyte BIPs between inert solvents and ions (2541)
  • Added an option for a Composite Curve delta T plot (2555)
  • Added a Notes section to the Consolidated Report (2559)
  • Added a new print format for electrolyte regression (2567)
  • Changed the interaction between CHEMCAD and Microsoft Word due to MS security changes (2621)
  • Added five new CHEMCAD examples for power plant carbon capture (2673)
  • Added the TmmC term to the electrolyte NRTL model (2709)

 

   CHEMCAD Maintenance

  • Corrected the equation for the LMTD correction factor for 4-4 air coolers (2491)
  • Corrected an issue with the toolbar Restore Default command (2514)
  • Corrected an issue with the Controller UnitOp's Scale labels (2516)
  • Corrected an issue where LLV unit icons created with Symbol Builder were added to the Flash subpalette (2540)
  • Corrected an issue with nested controller loops and recycle loops in sequential mode (2551)
  • Corrected an issue where CHEMCAD could give a false message when a local thermodynamics method is specified (2568)
  • Corrected an issue where a new BIP stored in a simulation could be listed as a system BIP (2603)

CC-THERM

  • Corrected an error with display units for shell-side and tube-side film resistances on CC-THERM reports (2318)
  • Corrected an issue with the Vertical Thermosyphon not accepting the optional h film coefficient value (2515)
  • Corrected an issue where the Reynolds number was not reported when using double-or triple-segmental baffle with Bell-Delaware method (2565)
  • Corrected an issue where running an air cooler case on a Tower Plus unit could reset simulation settings (2584)
  • Corrected an issue with thermosyphon heat curve convergence (2598)
  • Corrected an issue with random text displaying for utility streams in the air cooler stream report (2619)

  CC-DYNAMICS

  • Added the option to reset integral error for the PID controller and control valve UnitOps (1231)
  • Added a warning to display if the PID controller set point value is not within bounds of Variable Min and Variable Max (2033)
  • Added rate regression simulations to the Dynamics examples directory (2227)
  • Corrected an issue where the "Save As" command did not properly save the initial state for dynamic simulations (2501)
  • Added the capability to use packed column rating pressure profile in dynamic simulations (2536)
  • Corrected an issue where the runtime plot for CC-DYNAMICS could stop and prevent other plots from displaying under Windows Vista and 7 (2730)
 
   

VERSION 6.2.0 RELEASE NOTES

CHEMCAD New Features and Enhancements

  • Introduced the CHEMCAD Report Writer system, which provides enhanced user-customizable reports (2006)
  • Added the capability to enter user-created BIPs into a database (1525)
  • Added the capability to generate equilateral triangular plots (870)
  • Added the capability to omit unconverged points from a TPXY plot (2223)
  • Added the capability to optimize OPC performance by selectively limiting the data published via OPC (2224)
  • Improved System Authorization licensing method to apply to a specific computer rather than to individual users (2210)
  • Added new examples covering Selexol(TM) carbon capture, reaction rate regression, and multiple-effect evaporation (2196, 2227, 2532)
  • Added a thermal conductivity mixing rule for electrolytes (682)
  • Added the capability for OPC users to change feed stream component flow rates, temperature, pressure, velocity, and total flow (800)
  • Created the Mass and Energy Balances report, which replaces the Convergence report (855)
  • Added distillation curves D86 and TPB to the available options on the Stream Properties report (912)
  • Revised and made available packing data for Billet and Schultes method (1330)
  • Added the window velocity value to the Zone-By-Zone Analysis for shell-side sensible flow and tube-side condensation or evaporation (1516)
  • Added a multiple-inlet symbol to the Gibbs Reactor sub-palette (1577)
  • Added the capability to model solid-vapor equilibrium (1710)
  • Added the capability to edit the PID Controller calculated results on the Misc Settings tab (2032)
  • Created a warning that displays if the PID controller setpoint value falls outside the sensor's defined range (2033)
  • Made the Mass Transfer report easier to read (2078)
  • Changed the name of the Stream Recorder History plot to Stream History (2085)
  • Added a prompt enabling the user to specify where to store user-defined components for a single component database (2101)
  • Added UNIFAC subgroups for component 2027, Pentaethylene Hexamine (2164)
  • Added the capability to include up to 50 different solid components in a single simulation (2193)
  • Added the capability to specify up to six objects for feed-forward controllers (2240)
  • Added the capability to reset the UnitOp palette to display the original default icons (2253)
  • Added a warning message to inform user of incorrect formula entered for user-added component (2282)
  • Added the capability to set the CHEMCAD 5 import directories from within CHEMCAD 6 (2296)
  • Changed the Topology report to include the calculation sequence (2308)
  • Improved mass transfer column convergence (2369)
  • Improved the TBP/D86 conversion method (2382)
  • Added the capability to change heat exchanger simulation mode from a DataMap or controller (2467)
  • Added mass balance view for dynamic simulations (2478)
  • Added ITAE calculation to the PID controller UnitOp (2482)

 

  CHEMCAD Maintenance

  • Improved flash convergence for electrolytes in adiabatic flash (2438)
  • Corrected an issue with the TPXY plot (PSRK/latent heat, Acetylene/Hexane) producing one out-of-place point (831)
  • Corrected an issue with the behavior of items on the Other Data component editing dialog box (953)
  • Removed a message about CAPE-OPEN thermodynamics from the Errors and Warnings tab when not applicable (1125)
  • Corrected a rare issue with reactive distillation in SCDS not working properly on top of a batch reactor (1216)
  • Corrected an issue with META unit improperly calculating stream flow rates between parent and child simulations (1543)
  • Corrected an issue with VBA that could occur when the CHEMCAD interface was not running (1728)
  • Corrected an issue that sometimes caused unzipped CHEMCAD files to have incorrect file creation dates (1973)
  • Corrected an issue where user-created components could fail to copy properly as part of a stream copy operation (2202)
  • Corrected an issue with the DataMap feature not working properly in simulations containing both SCDS and batch reactor UnitOps (2212)
  • Corrected an issue where the use of local K-values for a distillation column could prevent a simulation from being saved (2247)
  • Corrected an issue where standard liquid volume was reported incorrectly in the Stream Properties report for electrolytes (2290)
  • Corrected an issue that prevented the addition of a user icon to the PID Controller sub-palette (2298)
  • Corrected an issue with the total flow rate on the Bulk Properties page of pseudocomponent curves failing to match the flowsheet for certain flow units (2303)
  • Corrected an issue with cut stream persisting after a second cut stream is selected (2305)
  • Corrected an issue with calculation of air cooler tube-side pressure drop (2322)
  • Corrected an issue with UnitOp dialog boxes performing input checks on calculated values (2332)
  • Corrected an issue with Batch Reactor T/Q specifications not saving properly when zero reactions are specified (2348)
  • Corrected an issue with user-specified cut streams failing to save correctly (2351)
  • Corrected an issue where the OPC server functioned improperly when run as a COM server without the CHEMCAD graphical user interface (2364)
  • Corrected an issue where the liquid phase was deleted from the Solid Components dialog box after changes were made to the flowsheet (2371)
  • Corrected various formatting and content issues in Excel reports (2417, 2421, 2423)
  • Corrected an issue that caused the Sensitivity Study dialog box to behave incorrectly for ten or more recorded variables (2437)
  • Corrected an issue with the WAR report that caused extraneous characters to print with user component names (2456)
  • Corrected an issue with electrolyte reactions being unavailable when first created (2462)
  • Corrected an issue that prevented reaction constant changes made during a dynamic run from affecting that run's results (2490)
  • Corrected an issue that prevented the Save As command from correctly saving the initial state for a dynamic simulation (2501)
  • Corrected a dialog box issue to allow entry of liquid-liquid extractor side product specifications (2506)
  • Corrected an issue that caused CHEMCAD, in rare situations, to stall after a user edited a stream and then ran the simulation (2508)

  CC-THERM

  • Improved vibration analysis by using actual inlet/outlet baffle spacing for cross-flow velocity (1523)
  • Added a ‘No Baffle' option in the CC-THERM Baffle Specifications dialog box (1353)
  • Added the capability to enter a negative value for the air-side inlet temperature for air coolers (1981)
  • Corrected an issue where baffle spacing was incorrectly affecting the calculation for X shell in a sensible-sensible case (2066)
  • Corrected a rare issue with calculation of vapor phase fraction for the vibration report (2236)
  • Corrected an issue with CC-THERM failing to save heat curve edits (2245)
  • Corrected an issue with incorrect units displaying for shell-side and tube-side film resistances on CC-THERM reports (2318)
  • Corrected an issue with heating curves not initializing correctly (2374)

 

  • Added capability to select temp folder location for simulations (1324/5145)
  • Added MJ/kg engineering units to the Specific Heat property (1578)
  • Enhanced Gibbs reactor to treat as inert any components that do not have atoms (2050)
  • Updated all CHEMCAD example simulations, with more instructive annotations (2686/3065/5428)
  • Added kPa G pressure unit to Engineering Units dialog options (3177)
  • Added the capability to remove items from the list of recovered files in the CHEMCAD Explorer (3503)
  • Changed the behavior of the recovered files list in the CHEMCAD Explorer, so that it appears below the recently used files list and is collapsed by default (3557)
  • Added asynchronous error event notification for VBServer (3575)
  • Improved visibility of calculated values in the Economics dialog (3617)
  • Revised Pipe UnitOp report to include internal pipe diameter (3747)
  • Added single phase option to the Flash UnitOp, replacing the former LLVF UnitOp (3898)
  • Improved the interface between CHEMCAD and the Economics tool (3981)
  • Implemented Schultes 1999 as a new packing method for mass transfer column sizing and rating (4166)
  • Added UNIFAC parameters to isoquinoline, component 841 (4358)
  • Made the 'flowsheet did not converge' message more visible to users (4454)
  • Added the capability to selectively run a UnitOp even when an unrelated UnitOp elsewhere on the flowsheet does not have inlet or outlet streams (4708)
  • Updated CHEMCAD’s costing tools to use the CE January 2012 final values by default (4724)
  • Improved convergence for internal energy flash calculation method (4782)
  • Improved convergence of Reid Vapor Pressure and flash calculation method (4791)
  • Reinstated a warning message that displays when the Gibbs element matrix is incomplete (4823)
  • Updated the NRTL BIPs for cyclohexane/n-hexane (4830)
  • Added heat of formation data for dehydroabietic acid, CAS No. 1740-19-8/component 1978 (4934)
  • Added UNIFAC subgroups for dibenzothiophene, CAS No. 132-65-0/component 1726 (4949)
  • Added stream vertices to XML output (4967)
  • Added meters of water as a pressure unit in the Engineering Units dialog, for use with Pump UnitOps (4982)
  • Added exception handling for database connection errors (4991)
  • Removed confirmation dialogs that appeared when using CHEMCAD as an OPC server (5020)
  • Changed the behavior of the CHEMCAD License Manager so that it lists expired product licenses as well as available and held licenses (5058)
  • Created new Column UnitOp symbols that can represent either partial or total condensers (5258)
  • Improved the flash algorithm for display of non-feed pure component streams (5293)
  • Added synonym MDEA for component 744 (5323)
  • Improved the flash algorithm for true species at dew point (5344)
  • Improved convergence for equilibrium reactors (5365)
  • Updated properties for lactic acid, dilactic acid, and trilactic acid (5409)
  • Improved the enthaply calcuation for high-temperature, low-pressure water properties (5417)
  • Added the capability to send stream relative humidity data using Excel Data Map (5440)
  • Improved flash convergence in the critical region for equations of state (5590)
  • Added an option to allow negative head/pressure in a performance curve for a Compressor UnitOp (5633)
  • Updated the NRTL BIPs for 1-butanol and 1-pentanol (5666)
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