THE PERFORMANCES OF A MODIFIED EJECTOR AIR CONDITIONING CYCLE
DOI:
https://doi.org/10.11113/jt.v75.5334Keywords:
Standard refrigeration cycle, standard ejector cycle, modified ejector cycle, coefficient of performanceAbstract
Residential and commercial air conditioning systems have contributed to high electricity usage and cost in daily living. People nowadays look forward to environmental friendly products, as well as saving operating cost. Air conditioning system using ejector as two phase expansion valve was studied earlier to obtain better performance in terms of energy saving. The purpose of this study was to prove that ejector air conditioning system has better coefficient of performance (COP) than conventional air conditioning system. Two refrigerant cycles, including standard cycle and modified ejector cycle had been studied and their characteristics were investigated. Electrically heated ambient air was used to obtain higher ambient air temperatures. The experiments were run by using R22 and R290. The experiments were carried out by using standard cycle and modified ejector cycle system. On top of that, analyses were conducted on the results obtained from the experiments. Moreover, it had been proved that modified ejector cycle had higher COP than standard refrigeration cycle.Â
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