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CYCLE D: NIST Vapor Compression Cycle Design Program. Version 4.0. Users' Guide.


pdf icon CYCLE D: NIST Vapor Compression Cycle Design Program. Version 4.0. Users' Guide. (576 K)
Brown, J. S.; Domanski, P. A.; Lemmon, E. W.

NIST Standard Reference Database 49; 42 p. May 2009.

Keywords:

refrigerants; refrigeration; compressing; installing; vapors; heat exchangers; computation

Abstract:

The CYCLE_D package simulates vapor compression refrigeration cycles that use pure refrigerants or mixtures of refrigerants. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat exchanger. In addition, the model can simulate a subcritical two-stage economizer cycle, a subcritical three-stage economizer cycle, and a subcritical two-stage compression cycle withintercooling. CYCLE_D operates in a user-friendly Microsoft Windows environment that facilitates evaluating the performance of selected working fluids at different operating conditions. Calculations are based on refrigerant properties as represented in the NIST Reference Fluid Thermodynamic and Transport Properties Program - REFPROP, Version 8.0.