==== AFT Mercury 7.0 (Version Date 2011.04.04) Release Notes ===== This file contains the changes that have been made to Mercury 7.0 *** Changes for Version Date 2010.06.25 *** Initial release *** Changes for Version Date 2011.04.04 *** >> Changes to computation logic that could impact results << 1. A problem with Relief valves modeled as inline exit valves was fixed. The discharge flow and pressure was not being calculated properly. 2. Fixed problem updating the fluid when the database fluid was changed and then the scenario was updated when variable fluid propertied were used. The updated fluid properties associated with the pipes were not being updated correctly. 3. Fixed a problem where the "raw data" was not copied when a copy-paste was performed. This normally does not impact results except when the data is used as an X-Y interpolated fit for pump curves and resistance curves. 4. Fixed a problem calculating pressures in a zero-flow loop (isolated loop) that has the reference flow directions in pipes in opposite directions while also having a hydrostatic pressure difference (elevation change) across a junction in that loop. 5. Fixed a problem calculating the fluid exit temperature when internal insulation is being applied. This calculation was not taking into account the insulation thickness when it used the wetted area. 6. The FCV K factor and Cv calculation did not apply the elevation change across the valve correctly. This was fixed. 7. The pressure drop across a FCV had the hydrostatic pressure across the valve calculated incorrectly. This also affected the inlet conditions of the downstream pipe as well as the valve failure calculations. This was fixed. 8. The valve failure check for a PSV incorrectly included the hydrostatic pressure across the valve twice. This was fixed. >> Changes to data management that could impact results << 1. Fixed a problem where the general heat transfer options were not available in a pipe when SteamCalc with Heat Transfer was selected as the first fluid. 2. Fixed a problem using Copy-Paste where the pipes and junctions were not correctly connected. This could lead to problems when copying from one file and pasting into another. The connections would be corrected before the model was run. 3. Fixed a problem where flow imbalance warnings were generated when a model/scenario was reopened When the relaxation and the relative flow tolerance were automatically lowered. This was cause by checking the solution against the user-specified values and not the lowered values which were used during the run. 4. Fixed a problem with the Cost Database editor where the scale table data was being corrupted when another cost database file was opened while showing the scale table. 5. Fixed problem when a scenario that had controlled suction or discharge pumps was reloaded when these pumps were not actively controlling. The pumps were set to their control pressure and the results were incorrect. The pump controlling state is now archived in the model results and not recalculated. >> Changes that do not impact results << 1. When using Chempak or ASME Steam/Water data and using variable fluid properties, global editing of pipe data and copying data from pipe to pipe did not copy the pressure - only the temperature and other fluid properties. This was fixed. 2. Changed the limit on parallel and series pumps to allow up to 40. 3. If a valve was copied from another valve using the SameAs feature and it was the same handbook valve type, the K factor would be erased. This caused the junction to become undefined and the handbook valve type would have to be reselected. 4. When performing junction curve fits one must click the "Generate Curve Fit Now" button. If one clicked the image on the button and not the button itself, the curve fit was not performed. But it should have been. This was fixed. 5. When working with pre-existing pump junctions with multiple impeller configurations, if the engineering units used in the original impeller specification have since been removed from being active units (in the Unit Preferences window) then future editing of the pump configuration will result in a loss of the engineering units and loss of original data. This was fixed. 6. Fixed some display issues when working with pump junctions with multiple impeller configurations and using impeller trim functions. 7. When performing curve fits on pump data users can set a maximum x-axis value for flow. However, on subsequent curve fits for this pump the value is ignored. This was fixed. 8. Clarified error message if the user somehow had a solution tolerance of zero. 9. The Renumber Wizard allowed you to change the pipe or junction numbers but it did not erase old output. So it could display output for pipes or junction numbers that no longer exists. This would be resolved the next time the scenario was loaded or the model was opened. At the moment of renumbering it could cause confusion. 10. Fixed problem when jumping from one pipe spec window to another when using general convection heat transfer, an extra layer of insulation would be added and the pipe would be undefined. Jumping again would remove this extra layer. 11. Fixed a problem if the Model Data information was included in the output .dat file when a batch run was done. All the scenarios were using the same file name so only the last scenario run was being saved. 12. Linked the .dat and .out file names for the scenarios. 13. Fixed a problem where a comma was missing when the output preferences were saved to a file. 14. Fixed a problem when the ESC key is pressed during a multi-pipe draw. This could lead to zero-length pipes on the Workspace. 15. Fixed a problem when global editing the common junction size. The size selected would not be displayed correctly in the verification table to be applied. 16. When running Bingham Plastic non-Newtonian models the Output window could show extraneous input data for Brecht & Heller Pulp and Paper stock. The data had no affect on the model. 17. Changed help file format to .chm for Windows 7 compatibility.