Chemstations.CHEMCAD.Suite.v6.5.7.8139 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)