THERMODYNAMIC ANALYSIS OF DI METHYL ETHER AND ITS BLENDS AS ALTERNATIVE REFRIGERANTS TO R134A IN A VAPOUR COMPRESSION REFRIGERATION SYSTEM
Keywords:
RE170, R429A, R435A, R510A, COP, Exergy efficiencyAbstract
In this study, the first and second law analysis of Dimethyl ether (DME) and its blend refrigerants
(R429A, R435A, R 510A) is presented as an alternatives to R134a. A computational model, developed in cycle_D
software, is employed for comparing the performance of these refrigerants in vapour compression refrigeration cycle.
The thermodynamic properties of the DME and its blend refrigerants are computed using Refprop version 9.0. The
parameters computed are volumetric refrigerating capacity, compressor discharge temperature, Co efficient of
performance and exergy efficiency in system. The results indicate that VRC, COP and exergy efficiency for R134a are
lower in comparison with R429A, R435A, R510A.