Domanski, P.
(2026),
ACSIM; Simulation Model of an Air Conditioner, NIST EL site, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=960052, https://www.nist.gov/services-resources/software/acsim (Accessed April 24, 2026)
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ACSIM; Simulation Model of an Air Conditioner
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Abstract
ACSIM is a simulation program for single-stage air conditioners consisting of a compressor, finned-tube evaporators and condensers, thermostatic and electronic expansion valves, and connecting tubing. For modeling heat exchangers, ACSIM uses evaporator and condenser models from EVAP-COND, a well-established NIST software program available at the NIST/EL website with annual downloads of about 3000 (https://www.nist.gov/services-resources/software/evap-cond-version-50). ACSIM is fully compatible with EVAP-COND and provides the possibility to evaluate the effect of heat exchangers designed and optimized in EVAP-COND on the system performance. Consistently with EVAP-COND, ACSIM implements refrigerant thermophysical properties based on the NIST Standard Reverence Data 23; NIST Reference Fluid Thermodynamic and Transport Properties Data-base (REFPROP): Version 10.0, (http://www.nist.gov/srd/nist23.cfm ), and can carry out simulations with refrigerant blends with up to six components.Citation
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Keywords
air conditioner, condenser, evaporator, refrigerant, vapor compression cycle
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Created February 2, 2026, Updated April 23, 2026