An exergetic analysis is accomplished on compound mechanical refrigeration systems. Plant exergetic efficiencies, equipment irreversibilities, and their sensitivity to main system parameters are evaluated for several typical component arrangements, for refrigerants R12, R717, R22, R502, R13B1. The use of a flash tank for separation, desuperheating and with a subcooling coil seems the best solution. For this arrangement refrigerants R22 and R502 show the better balance between exergetic and volumetric performances, whereas R13B1 is characterized by remarkable volumetric and thermometric behaviour. Highly recommandable, in a higher evaporating temperature range, are the arrangements using an auxiliary compressor and the economized system. For these arrangements refrigerant R13B1 can be considered the best working fluid.
Refrigerant and Configuration Selection in Compound Refrigeration by Exergetic Analysis
DE ROSSI F;MASTRULLO, RITA MARIA ANTONIETTA;
1987-01-01
Abstract
An exergetic analysis is accomplished on compound mechanical refrigeration systems. Plant exergetic efficiencies, equipment irreversibilities, and their sensitivity to main system parameters are evaluated for several typical component arrangements, for refrigerants R12, R717, R22, R502, R13B1. The use of a flash tank for separation, desuperheating and with a subcooling coil seems the best solution. For this arrangement refrigerants R22 and R502 show the better balance between exergetic and volumetric performances, whereas R13B1 is characterized by remarkable volumetric and thermometric behaviour. Highly recommandable, in a higher evaporating temperature range, are the arrangements using an auxiliary compressor and the economized system. For these arrangements refrigerant R13B1 can be considered the best working fluid.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
