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A THERMODYNAMIC ANALYSIS OF REFRIGERANTS: PERFORMANCE LIMITS OF THE VAPOR COMPRESSION CYCLE

Published

Author(s)

Piotr A. Domanski, J S. Brown, Janusz Wojtusiak, Mark O. McLinden

Abstract

This paper explores the thermodynamic performance limits of the vapor compression cycle. In particular, we apply evolutionary algorithms to explore the performance of thousands of hypothetical refrigerants defined by their thermodynamic parameters used by the extended corresponding states model. We identified optimal values of these fundamental parameters required to reach the performance limits. The study confirmed the fundamental trade-off between the coefficient of performance (COP) and volumetric capacity, and indicated refrigerant critical temperature as the dominant parameter influencing the tradeoff. Thermodynamic performance limits depend on the operating conditions and the cycle design. These limits are represented by Pareto fronts developed for the objective functions COP and volumetric capacity. As expected, the performance of current refrigerants falls below the Pareto front limits. We demonstrate that for practical cycles the developed methodology and resulting Pareto fronts are more realistic benchmarks for the performance potentials of refrigerants than is COP alone, which is an efficiency only metric.
Citation
International Journal of Refrigeration-Revue Internationale Du Froid

Keywords

coefficient of performance, refrigeration, refrigerants, vapor compression cycle

Citation

Domanski, P. , Brown, J. , Wojtusiak, J. and McLinden, M. (2013), A THERMODYNAMIC ANALYSIS OF REFRIGERANTS: PERFORMANCE LIMITS OF THE VAPOR COMPRESSION CYCLE, International Journal of Refrigeration-Revue Internationale Du Froid, [online], https://doi.org/10.1016/j.ijrefrig.2013.09.036 (Accessed April 22, 2024)
Created October 24, 2013, Updated November 10, 2018