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EVAP-COND, Version 5.0

EVAP-COND is a software package that contains NIST's simulation models EVAP and COND for finned-tube evaporators and condensers. The “tube-by-tube” scheme in these simulation models allows for specifying complex refrigerant circuits, modeling refrigerant distribution between these circuits, and accounting for non-uniform air distribution.  Simulation results include local parameters for each tube such as refrigerant inlet and outlet quality, temperature, enthalpy, entropy, pressure drop, mass flow rate, and inlet and outlet temperature for air.  EVAP-COND includes a module for optimization of refrigerant circuitry based on computational intelligence methods.

EVAP-COND's help menu provides information about the program's capabilities and how to use it. The instructions include preparation of input data, execution of the program, and examination of simulation results. The graphical user interface contains several convenience features, including the ability to modify the existing refrigerant circuitry.

Program features:

  • Tube-by-tube or tube sectional simulation
  • One-dimensional, non-uniform air distribution
  • Simulation of refrigerant distribution
  • Refrigerant circuitry optimization
  • Condenser model capable of simulating above the critical point
  • Refrigerant thermophysical properties based on REFPROP Ver. 10.0 (NIST SRD 23)
  • 23 refrigerants and refrigerant blends provided with the installation module: ammonia, carbon dioxide, isobutane, propane, R1234yf, R1234ze(E), R22, R32, R134a, R152a, R161, R404A, R407C, R410A, R444A,R446A, R447A, R450A, R452B, R454B, R460A, R507A, and R513A
  • Simulations using blends with up to six components

EVAP-COND uses refrigerant look-up tables with thermophysical properties to facilitate fast simulations. The tables are produced by TableGen2, a look-up table generation program, which is based on property routines contained in REFPROP Ver. 10.0. TableGen2 allows the EVAP-COND user to expand the pool of available refrigerants by generating and adding look-up tables for other refrigerants or refrigerant blends with up to six components.

Installation Procedure:

Download the file EVAP-COND 5.0 and extract all files to a folder of your choice and execute setup.exe contained in this folder (double-click on the file). This will begin the installation wizard. Follow the prompts.

The installation process will:

  1. Install the EVAP-COND package in the folder of your designation.  
  2. Create the EVAP-COND startup group accessible from the Start button. 
  3. Create the EVAP-COND shortcut and place an icon on the desktop.

EVAP-COND may require manual changing of the display resolution from the PC default setting if a displayed schematic of refrigerant circuitry is different than the schematic shown on the screen catch below. In such a case, changing the resolution to 1360x768 typically corrects the problem. Starting with the Start button, select Setting>Display>Display resolution>New value.

Follow the tutorial in the Help Menu to familiarize yourself with EVAP-COND features for manual simulations and circuitry optimizations using ISHED (Intelligent System for Heat Exchanger Design).

EVAP-COND 5.0 package is compatible with Windows 7 and Windows 10. Heat exchangers and operating condition data files in Version 5.0 are compatible with Version 4.0; however, refrigerant property look-up tables are not. The existing EVAP-COND 4.0 must be uninstalled before the installation of EVAP-COND 5.0.

TableGen2 Installation Procedure:
Download the file and extract all files to a user-accessible folder. Read and follow instructions provided in TableGen2_Info.pdf.


Sample Screenshots

EvapCond Version 5
Created January 19, 2021, Updated July 26, 2021