Contents - Index
Commercial and Professional Versions
EES provides many additional features such as curve-fitting, linear regression, property plots, contour plots, uncertainty analyses, solutions to complex and differential equations and others. EES is available in both Commercial and Professional versions. All of the major capabilities are provided in the Commercial version. The Professional version provides the following additional capabilities. Features available only in the Professional version will be displayed in brown text throughout this help file.
1. A Make Distributable command is provided to create a special purpose version of EES that will run one to five preselected problems. EES, the problems, and supporting files are placed in a single executable file that can be freely distributed to others. They do not need to own EES to run the calculations or create/change/view the plots and tables. The equations can be hidden from the user, if desired.
2. A Diagram window is provided in the Commercial version in which a picture can be imported and text, input variables, and calculated variables may be superimposed in this window. The capabilities of the Diagram Window are expanded in the Professional version to define 'hot areas' in the Diagram Window which, when clicked, bring up Child Diagram windows. The Child Diagram Window has all of the capabilities of a Diagram Window including the ability to launch other Child Diagram Windows. Link buttons may be placed on any of the Diagram windows to start external programs, run a macro, start another EES file or other tasks.
3. The Professional version provides much more capability for manipulating objects in the Diagram window. Each object can be given a name and with this name, the color, size, rotation angle, and position of the object can be controlled with equations in the Equations Window. These capabilities provide the power animation capabilities in EES that allow the Diagram and Plot windows to display the current set of calculated data.
4. The Professional version allows radio buttons, check boxes, links of various types, movies and object embedding and linking to be used in the Diagram window.
5. A series of EES instructions (i.e., a macro) can be recorded with the Build Macro command in the File menu. EES can later be started from the Windows Run command or from a different program to replay all of the instructions in the Macro file. Used in this manner, EES can be directed to solve a set of equations in a specified text or EES file and put the solution into another specified text file without ever appearing on the screen using Dynamic Data Exchange (DDE)
6. Variable information can be read from or saved to a file. A variable information file has a .VAR filename extension, but it is a text file that can be opened in a word processor or spreadsheet. Variable information data can be saved to an existing .VAR file. In this case, the file is updated with the current information for the variables that are in use. Information in the file concerning variables that are not currently in use is not modified or deleted. If a program contains one or more modules, a dropdown list appears at the top center of the Variable Info dialog from which the module or main program can be selected. Variable information are read or saved for the selected module or main program. Variable information files make it very easy to prepare and use a file containing your common variables with appropriate guess values, limits, and units.
7. The Professional version allows a maximum of 12,000 variables and equations and the number of rows in the Parametric table is limited only by available memory. (The 64-bit Professional version provides 24,000 variables.)
8. The Professional version provides high accuracy properties for water substance at pressures up to 1,000 MPa using the STEAM_IAPWS formulation.
9. The 64-bit version of EES is only available for the Professional version..
10. The Diagram window and Plots can be animated and shown in a time series with the Professional version.
11. The genetic optimization and Nelder Mead optimization algorithms are options in the Professional version.
12. The Professional version allows the results of the optimization process to be logged to a text file.
13. Selected equations in the Formatted Equations window can be converted to LaTeX or MathType format in the Professional version.
14. The position of text in the Plot windows can be specified relative to the position of a data point.
15. Text in the Equations window can be protected in the Professional version.
16. Support for display of EES windows on two-monitors is provided.
17. The Professional version is able to write .EEZ files which are compressed .EES files that require much less space. All versions of EES can read .EEZ files.
18. The Professional version allows guess values and lower/upper limits to be specified in the Variable Information dialog with equations.
19. The Professional version allows the characteristics to be saved in a .EPT (EES plot template) file so that the characteristics of one plot can be transferred to other plots. The Professional version also provides capability to time sequence the display of plotted data.
20. Polylines, Bezier curves, and polygons can be placed on the Diagram and Plot windows in the Professional version.
21. The Professional version can do larger uncertainty propagation problems. It can simultaneously determine the uncertainty propagation of up to 50 selected variables (vs 12 in the Commercial version) in terms of the uncertainties of up to 100 measured variables (vs 30 in the Commercial version). The choices made for the calculated and measured variables and their associated relative or absolute uncertainties can be saved by clicking the Save Uncertainty Information button in the Uncertainty Propagation or Uncertainty Propagation Table dialog. These choices can later be restored by clicking the Open Uncertainty Information button in these dialogs. Saving the uncertainty information allows one EES file to solve several different uncertainty problems without having to reenter the uncertainty settings. The Save Uncertainty Information saves a text file having an .UNC file name extension.
22. The Professional (3-D Plotting) version can generate 3-D point and 3-D surface plots. The 3-D points plots can be overlayed on a 3-D surface plot.
23. The Professional version can supports dynamic data exchange (DDE) which can be used to interact with other programs such as MATLAB or EXCEL. In addtiona, the Professional version provides macro commands that allow direct communication with MATLAB or EXCEL using a COM interface and the Serial Communications Port.
24. A Plot Thumbnails window is available in the Professional version that displays all of the plots in the EES file at a size controlled by the user. Right-clicking on a thumbnail moves the focus to the selected plot in Plot window.
25. The Professional version can have up to 80 independent variables for an optimization problem. The Commercial version in limited to 20.
26. The $CopyToLookup directive is available in the Professional version. This directive makes it very easy to move calculated scaler and array variables to a column in the Lookup table window. The data in the Lookup table can be written to an external file in a variety of formats.
27. The Professional version can solve larger uncertainty propagation problems. It can simultaneously determine the uncertainty propagation of up to 50 selected variables in terms of the uncertainties of up to 200 measured variables.
28. Guess values and lower / upper bounds may be entered as equations in the Variable Information dialog for the Professional version.
29. The Professional version provides access to the Component Library, which provides high-level component models for energy systems. Click here to see information about the components in this library.
30. In the Professional version, the Plot window crosshairs can be used to identify the location of a plotted point in a table. The status bar will show the coordinates of the point, the table that the data originated in and the row in that table.
31. In the Professional version, the choices made for the calculated and measured variables and their associated relative or absolute uncertainties can be saved by clicking the Save Uncertainty Information button in the Uncertainty Propagation or Uncertainty Propagation Table dialog. These choices can later be restored by clicking the Open Uncertainty Information button in these dialogs. Saving the uncertainty information allows one EES file to solve several different uncertainty problems without having to reenter the uncertainty settings. The Save Uncertainty Information saves a text file having an .UNC file name extension.
32. Clicking the triangular icon at the upper right of each column in a Parametric or Lookup table brings up a dialog in which values in specified rows of the column can be entered. The Professional version will accept a previously defined variable name in place of a number in this dialog and in the Alter Values dialog (accessed from the Table menu). For example, if variable L is set to a constant in the equations window, L can be entered in place of its value in the First Value and Increment/Last fields. In addition, values can be entered in either the base or alternate units. More information on this capability is provided in the Change Table Column dialog.
33. Some refrigerant mixture, such as R407H, R423A, R427A, R455A, R460, R513B, and R515B are only available in the Professional version.
34. The Lookup tables in EES are designed to hold tabular data, such as that taken experimentally. Clicking on the triangular icon at the upper right of each column allows the data in one column of the table to be entered with an equation that uses data in other cells, EES variables, or EES functions. In the Professional version, the calculated data can be automatically updated making the Lookup table in EES function operate similar to a spreadsheet program.
35. Uncertainty values can be input in either the main or alternate unit set in the Professional version.
36. The $INPUT directive in the Professional version can be used to prompt the user to enter a variable value when solving.
37. EES can read NIST REFPROP .FLD (fluid) files and thereby provide thermodynamic property data for these fluids in the same manner as for built-in fluids.
38. Text in the Diagram Window can be displayed at a specified angle between -90 deg and 90 deg in the Professional version.
39. The font name and font size used in the Equations Window can be specified with a $Font directive.
40. In the Professional version, text items and buttons placed on the Diagram window can act as hyperlinks when clicked to open a browser to a specified page, open a .pdf file or start a program.