The optimum temperature of single-stages vapor compression refrigeration cycle for Air-Conditioning unit

Abstract

Vapour-compression cycle is the most widely used refrigeration cycles for Air-Conditioning (AC) units. The system consumes a significant amount of the energy. Thus, any modification to improve the energy efficiency is extremely needed. One of the well-known modification is multistage VC cycles. The objective of this study is to search the optimum high pressure based on environmental temperature of air condition. The single-stage cycle is analysed using for three different refrigerants (R32, R22 and R134a.). Pressure was varied based on ambient temperature. The governing equations and the boundary conditions are solved using Aspen Plus software. COP, refrigeration effect (RE), and compressor power as optimum temperature are plotted. The results show that there exists an optimum temperature for optimum cycle.