Comparable Performance Evaluation of HC and HFC Refrigerants in an Optimized System

Published

May 28, 2006

Author(s)

Piotr A. Domanski, David A. Yashar

Abstract

This paper presents an analytical evaluation of isobutene (R600a), propane (R290), R134a, R22, R41OA, and R32 in a vapor compression system used for comfort cooling applications. The evaluation method was based on a system simulation model that was complimented with an evolutionary computation module for the optimization of refrigerant circuitries in the evaporator and condenser. The evaluation showed the coefficient of performance (COP) for the studied refrigerants to be within 13%, with R32 and R290 having the highest system COPs. This evaluation produced a vastly different ranking of the compared fluids than that obtained from a theoretical cycle analysis based on thermodynamic properties alone. In the system simulations, the high pressure refrigerants overcame the thermodynamic disadvantage associated with their low critical temperature and had higher COPs than the low-pressure R134a and R600a, which were ranked the highest by the thermodynamic cycle analysis. The presented results include entropy generation information for complete systems and individual system components.

Proceedings Title

IIR Gustav Lorentzen Conference on Natural Working Fluids, 7th

Conference Dates

May 28-31, 2006

Conference Location

Tondheim

Pub Type

Conferences

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Keywords

hydrocarbons, hydrofluorocarbons, evaluation, refrigerants, isobutane, propane, compressing, comfort, cooling, simulation, entropy, heat transfer

Citation

Domanski, P. and Yashar, D. (2006), Comparable Performance Evaluation of HC and HFC Refrigerants in an Optimized System, IIR Gustav Lorentzen Conference on Natural Working Fluids, 7th, Tondheim, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910391 (Accessed April 25, 2024)