Menu commands

Below is a list of menu commands available (close to 100). Several of these commands are available by direct mouse operations.

File|New Delete current plant awaiting a new plant description.
File|Open Load from a file either a plant description or a basis component or fluid description.
File|Reload Reload current plant, discarding changes made since last load or reload.
File|Example Load plant examples. These are either templates or demo cases. These plant example can not be overwritten. When modifying such a template plant, it must be saved to another file.
File|Append Place one or a number of previously specified plant/s alongside current plant.
File|Save Save a plant description to the original file.
File|Save as Save a plant description to another file. It is possible to save back to the original file, however being warned about this. When saving to another file, all plant change disabling is released.
File|Print Print plant layout or diagram/chart currently visible in the plant window. Unless you select the best format (portrait or landscape), you may loose some of the outer details. See also margins adjustment in user preferences.
File|"File name" Open recently loaded plant files of the specific name. See settings in user preferences.
File|Exit Exit FrigoSim.

Edit|Undo Undo last change. A maximum of 32767 change levels can be recorded, later to be recalled. The number of levels is set through Set|Preferences command. Default is 10. Note: If you want to start from the original plant, it is more efficient to do a File|Reload than a number of "Undo"s. A large number of undo levels requires a corresponding large disk capacity.
Edit|Redo Redo last change.
Edit|Modify Modify values of selected element.
Edit|Capacity Scale the capacity of the selected component, the group of framed components or the entire plant. Note! When selecting a component for capacity scaling, all components of the same basis component type will be scaled. You either set a scaling factor or a desired capacity. The latter option can only be specified after first having selected a plant capacity in Output|Derived quantities and then performed a calculation with a subsequent reload (File|Reload). See also capacity change mechanisms.
Edit|Replace basis component Replace the basis component of a plant component with another one of the same model.
Edit|Duplicate Make a copy of the selected element or the group of framed components with related elements. See mouse operations on duplicating boundary conditions, and enthalpy and valve controls.
Edit|Duplicate and connect Make a copy of the current component and connect the copy to the original. This requires that the component is partly or entirely unconnected to other components. Otherwise it will only duplicate in the ordinary sense.
Edit|Duplicate Plant Make a copy of the entire plant placed alongside the original.
Edit|Delete Delete the selected element or the group of framed components with related elements.
Edit|Delete plant Delete the entire plant, leaving the basis components and fluids of respective windows available.
Edit|Delete unused basises/fluids Delete all basis components and fluids that are not used in the plant.
Edit|Discharge circuit Remove fluid from circuit of current connector. Deleting a fluid will discharge all circuits filled with this fluid.
Edit|Find Selection of an item through a dialogue, as an alternative to pointing and clicking in the layout.
Edit|Next Shift selected element to next of same category.
Edit|Previous Shift selected element to previous of same category.
Edit|Adjust Adjust command with a number of submenus:

  1. Current : Adjust currently selected element.
  2. All components : Adjust all components.
  3. All connectors : Adjust all connectors.

The adjust command only acts on the position of elements for enhancement of plant appearence. See also mouse operations.
Edit|Align Align all framed components plus connectors inside frame. There are two submenus: Minimum applying lowest values and Maximum applying highest values. The components and connectors are aligned to the same and lowest/highest x or y coordinate, applying x or y giving the smallest original value range.
Edit|Rotate to next 90 Rotate selected component or illustration to next multiple of 90° (i. e. 0, 90, 180 or 270°).
Edit|Move/Scale/Rotate Move and/or scale position and sizes of components, connectors and related elements.
Edit|Push behind Place current component behind all other components. This is necessary to apply to a component if it is attached along a heat transfer boundary to a smaller component and is completely hiding the other, preventing access.

View|Plant layout View the plant layout.
View|H-logP diagram Display refrigerant connector variables in an enthalpy vs. pressure diagram. If temperature variables are set to be viewed by menu command View|Variables, isotherms will be plotted.
View|T-S diagram Display refrigerant connector variables in an entropy vs. temperature diagram. If pressure variables are set be viewed by menu command View|Variables, isobars will be plotted. (See below)
View|Psychrometric chart Display humid air type connector variables in an absolute humidity vs. temperature chart.
View|Symbols Display all symbols representing components and other elements.
View|Colours Display all selectable colours (for fluids).
View|Boundary conditions Display all specified boundary conditions using a colour and orientation that corresponds to the kind of variable set.
View|Controls Display all specified controls of the plant. All inactive controls are marked with a cross.
View|Zoom in 2x Zoom in twice around current element.
View|Zoom out 2x Zoom out twice.
View|Whole View the entire plant layout or diagram.
View|Basis components and fluids Display or hide the windows for basis components and fluids. When hidden the user will have more horizontal space for the plant layout and a more tidy presentation while demonstrating a plant.
View|Names Display names of plant components and corresponding basis component names.
View|Numbers Display numbers of connectors and circuits to be able to identify some error information. It will also display boundary numbers, if combined with View|Heat transfer boundaries.
View|Capacities Display component capacities represented by the most relevant component quantity that is scaled through Edit|Capacity. This selection should be turned off before attempting to calculate newly specified plants, because it may fail if the calculation produces extreme values.
View|Relative capacities Display of circles around most components to indicate the relative capacity. This facilitates spotting ill-sized components. The circles should normally be of the same magnitude. If a relative capacity of a component is lower than 5 % of the highest capacity component, the circle is replaced by a standard-sized cross. This selection should be turned off before attempting to calculate newly specified plants, because it may fail if the calculation gives extreme values
View|Connectors Display of connectors. Corners belonging to connectors are never displayed. Even if connectors are not displayed, they are still accessible by pointing to their position.
View|Heat transfer boundaries Display the heat transfer boundaries limiting layers participating in a heat conduction calculation.
View|Variables Select the connector state variables to be displayed. Note that extensive variables are written in white, while intensive ones are in black. The background colour depends on variable type. The current setting will change through other operations, unless marked as persistent. In the latter case there will be no automatic setting of variable display. Note in particular that if you set to View none and Persistent setting , then the variables have to be viewed through accessing components or connectors. A legend showing variable types can be shown or hided. View|Equations and Variables Turn on or off display of the plant heat flow rate balance equation system in the upper left corner, and the mass flow rate balance equation system for each of the plant circuits. In addition the variable numbers corresponding to each connector are displayed. Colours are cyan for temperatures, green for pressures, yellow for enthalpies, red for mass flow rates, light grey for fractions (both absolute humidity of air and vapour fraction of refrigerants), and finally dark grey for powers. Note! This toggle menu disables the display of calculated variables.

Add|Basis component Add one basis component or a set of basis components for all non-data models. Adding one basis component can be done in two ways (with individual push buttons):

  1. Directly by entering the required basis component data depending on selected component model type.
  2. Indirectly by specifying practically oriented data, that in turn are transformed into the regular data for a basis component of a chosen model type.
  3. Generate one basis component for each of component models that require no data.

Add|Fluid Add one fluid or a number of fluids:
  1. One refrigerant from the refrigerant library.
  2. One secondary fluid from the secondary fluid library.
  3. One secondary fluid based on data supplied by the user.
  4. All available refrigerants from the library.
  5. All available pure secondary fluids (that require no concentration specification).
Add|Component Add a component of the selected basis component type to the plant.
Add|Fluid fill Introduce a fluid fill element containing the selected fluid. This enables filling a circuit with a specific fluid, by dragging the fill element to a connector of the circuit.
Add|Boundary condition Add a boundary condition to the plant. The set variable type is indicated by the boundary condition symbol.
Add|Control Add a control to the plant.
Add|Illustration Add an illustrative element among a number of available symbols. Such elements are put in the background to improve the visual expression and have no impact on the calculation. They may be dragged and scaled by mouse actions or a dialogue. The fill colour is selectable among all supported colours.

Set|Quantity units Set alternative quantity unit systems or individual units.
Set|Connector line width Set width of lines between connectors and components.
Set|Modifiers Create input variables to functions different from the default ones. They are activated in the function dialogue by pressing Modify X or Modify Y buttons and selecting the proper modifier. Modifiers not connected to functions will be lost when reloading or exiting FrigoSim.
Set|Simulation conditions Set calculation parameters.
Set|Language Set user interface language, ref. current languages.
Set|Edits after a simulation Allows doing most edits after a simulation (default off).
Only Add|* menu commands are not enabled. Set|Preferences Enter the dialogue for setting user preferences, see more in preferences.

Output|Component quantities Select components quantities for output to the result and report files.
Output|Derived quantities Specify output to the result and report files of derived quantities from the components quantities. These are e.g. total values for several components, extreme values, integrated values, economic quantities etc.
Output|1D Heat Conduction Turn on or off output of one heat conduction result file per component that contains this type of calculation. test purposes and could/should be turned off when doing lengthy simulations.
Output|Report elements Specify various calculation elements added to the report file.

Perform|Iteration Perform a single calculation iteration, constituting one mass balance calculation for each circuit and one overall heat balance calculation. This command should be used when a new plant has been built, to check if components are well adapted to each other.
Perform|Time step Perform a calculation at one time instance, consisting of a number of iterations, and possibly outer control iterations, until convergence has been reached.
Perform|Simulation Perform a calculation of all time instances specified. There is no way to stop a simulation, other that pressing Ctrl+Alt+Del and specify to end the FrigoSim task. Then the program must be restarted.
Perform|Multiple simulations Perform a number of simulations in sequence without the need for any user interaction. There is no initial check that the specification is well stated, so these kinds of simulations must be based on specification files that has been previously tested and found in order.
Perform|Optimisation Perform an optimisation at current time based on user selection of a quantity to be maximised or minimised by varying otherwise fixed basis component data between given limits.

If the Perform menu commands are disabled (greyed), the reason is that the plant is not properly specified. Some of the basis components or plant components may not be fully specified. The number of equations may be different from the number of variables for the total plant heat flow balance or for the mass flow balance for each of the plant circuits. Use the commands View|Equations and Variables, Preferences dialogue Deficiencies box and Inspect|Characteristics to guide you in narrowing down the problem at hand.

Inspect|Results Inspect the result file (with extension rsl). Result files are mainly intended for input to spreadsheets and other postprocessing programs.
Inspect|Report Inspect the report file (with extension rep) issuing a plain text results output. It may also have details on how the calculation has evolved, depending upon the selection in the Output|Report elements menu.
Inspect|Characteristics Present the number of various plant elements and equations.

Help|Help Start help text browsing.
Help|Web Start the web browser (if any) for inspecting the latest information on FrigoSim.
Help|About Enter a brief presentation of license information and copyright.

Entropy Temperature Diagram:

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