CHEMCAD VERSION 6.4

Major enhancements of version 6.4 over version 6.3 include:

• State-of-the-art licensing tool, RMS License Manager, which expands CHEMCAD's commuter licensing capabilities
• New Thermo Acceleration operating mode, which can help speed calculations for complex simulations
• Improved dynamic column performance
• Enhanced user-defined component database, which enables users to specify electrolyte density, viscosity, diffusivity, Henry's constants, and BIPs
• BIP regression from partial pressure data

• Improved convergence for multiple solid electrolyte systems
• Capability for simultaneous heat transfer and mass transfer models in distillation columns
• Capability to run Excel Data Maps for each time step in dynamics mode
• New section on the Topology Report that lists stream and UnitOp relationships, such as controllers, stream references, streams copied from another flowsheet, and META units
• Improved convergence for node flowsheets where some UnitOps are near critical flow

VERSION 6.4.2 RELEASE NOTES

CHEMCAD New Features and Enhancements

• Removed the heat exchanger heat duty calculated value from rigorous simulation mode (1997)
• Changed the Henry's constant plot to allow the use of pure components (4180)
• Regressed Henry's constants for air (4181)
• Improved thermodynamic models to aid column convergence (4073)
• Added Radius of Gyration to the CHEMCAD physical properties database (4056)

CHEMCAD Maintenance

• Corrected the vapor pressure for Triolein (ID: 2251) in the CHEMCAD component database (3797)
• Corrected an issue where batch operation step data was exported using incorrect units (690)
• Corrected an issue where heat of combustion values were incorrect in reports (1629)
• Corrected an issue where multiple Edit Streams dialogs could be opened at once, causing CHEMCAD to close unexpectedly (2572)
• Renamed Specific Heat field in the Engineering Units Converter tool (F6) dialog to Heat Capacity (3579)
• Corrected issues with the META UnitOp (3783)
  Corrected an issue where a long stream name could cause CHEMCAD to close unexpectedly (3799)
• Corrected an issue where a Gibbs reactor did not converge when only three components were available for a reaction (4065)
• 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)

     CHEMCAD Maintenance, continued

• 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 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)

     CC-THERM

• 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 the fouling rating for a 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)

VERSION 6.4.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

• 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)
• 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)
• 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)
• Added a more user-friendly Property description to the Update Components dialog box (3955)

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 it had been 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 an issue where the Control Valve UnitOp in “Calc Pout” mode could fail without triggering an error message (823)
• Corrected an issue where SCDS costing did not properly convert packing price (3481)
• Corrected an issue where an Excel file could be generated for UnitOps not matching the selected report (3641)
• 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)

     CHEMCAD Maintenance, continued

• Corrected an issue that prevented users of Windows 7 64-bit OS from installing CHEMCAD 6.4. (3889)
• 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 wide area network (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 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)

     CC-THERM

• Version 6.4.1.5369: Corrected an issue wtih CC-THERM simulations switching to the Kern model in the presence of shell-side fluids that do not change phase (4243)
• 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)

VERSION 6.4.0 RELEASE NOTES

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 6.3.3 RELEASE NOTES

CHEMCAD New Features and Enhancements

• Added the capability for simultaneous heat transfer and mass transfer model in distillation columns (3610)
• 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)
• 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

• Corrected an issue that caused the initial release of CHEMCAD 6.3.3 to install without the accompanying Help file (3724)
• Corrected an issue with stream templates that were created in CHEMCAD 6.2 (3303)
• 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 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 with registration of COM server at installation (3520)
• Corrected an issue which, in rare circumstances, could cause a very large flowsheet to close unexpectedly (3567)

   CC-DYNAMICS

• Improved dynamic column performance (3565)
• Added a new and improved OTS amine simulation to the CHEMCAD example library (3570)

   CC-THERM

• 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)

   CC-BATCH

• Corrected an issue where pot charge could be deleted as a result of inserting a new first step for Batch Column (2453)

VERSION 6.3.2 RELEASE NOTES

CHEMCAD New Features and Enhancements

• Added a new operating mode, Thermo Acceleration, which can decrease calculation time for complex simulations (2841)
• Replaced License Manager 7.2 with RMS License Manager (see important upgrade message) (3364)
• Added the capability to use commuter licensing from non-administrator accounts with RMS (2262)
• Added the capability to select equation of state for use with Poynting factor (3151)
• Added the capability to regress BIPs from partial pressure data (3306)
• Added the capability to set a keyboard shortcut for drawing streams (3414)
• Improved KREA with capability for solid-gas reactions (3400)
• Added the capability to specify which reaction(s) are deleted for reactor UnitOps (1456)
• Improved the default class selection during creation of a new user-defined electrolyte component (2862)
• Improved convergence for node flowsheets where some UnitOps are near critical flow (3014)
• Enhanced VBClient.xls to enable reporting of unconverged UnitOps (3209)
• Revised ideal gas enthalpy for new components using the Joback method (3213)
• 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 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)
• 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)

CHEMCAD Maintenance

• 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)
• Corrected a minor issue with air cooler mean temperature difference calculation (3196)
• Corrected an issue with the Close All Charts command leaving equilateral triangle charts open (3296)
• Corrected a rare issue with CHEMCAD stalling during launch while initializing VBA (3346)
• Corrected an issue with the heating value for solid components (3401)
• Corrected an issue with CHEMCAD automation menu.xla for 64-bit Office 2010 (3437)
• 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)

   CC-THERM

• Improved zone temperature calculation for horizontal tube-side condensation with shell-side evaporation (3468)
• Added new options to the Nozzle dialog for an X-shell with a three-nozzle connection (3015)
• Corrected tube count for no-tube-in-window baffle case (3238)
• Corrected an issue where a superheated vapor error message could prevent a user from 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)

    CC-DYNAMICS

• Corrected an issue with BREA 'KREA file not found' message for zero reactions (1235)
• Added the capability to run Data Maps for each time step in dynamics mode (1444)
• Added warnings for PID controller measured variable outside min/max range (3210)

    CC-BATCH

• Improved convergence of batch distillation using SCDS method (3212)

VERSION 6.3.1 RELEASE NOTES

CHEMCAD New Features and Enhancements

• 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)
• 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)
• Added a warning for the Compressor UnitOp if inlet or outlet vapor fraction is less than 1 (2983)

CHEMCAD Maintenance

• 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)
• 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 an issue where an MSRK simulation incorrectly used SRK BIPs for component pairs with user-added MSRK BIPs (3220)
• Corrected an issue with the META UnitOp (3222)

    CC-THERM

• 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 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)
• 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)

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)