Vapour Compression-Absorption Cascade Refrigeration System-Thermodynamic Analysis

摘要

This paper describes the study carried out to analyse a refrigeration system in which a compression system at the low temperature stage and an absorption system at the high temperature stage are cascaded to generate cooling at low temperatures. These cycles were analysed thermodynamically and were compared with each other using different refrigerants in the compression and absorption sections at the same operating conditions, that are an evaporator temperature of 233K (-40°C) and condenser temperature of 313K (40°C). R22, R125 and R32 have been considered as refrigerants in the compression stage and the pair of NH_3-H_2O and R134a-E181 in the absorption stage.