ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION (VCR) BASED AIR CONDITIONING (AC) SYSTEM FOR HOT an‎d DRY CLIMATIC CONDITIONS IN OMAN

An evaporative-VCR combined AC system for providing good human comfort conditions working under hot & dry climate is proposed in this paper. The system is thermodynamically analysed for hot & dry climate of Muscat, Oman from April-July 2015 under some reasonable assumptions. The system was also compared on the basis of saving in cooling load (%) on the cooling coil for the same sensible cooling rate to the conditioned space from the conventional VCR-AC working on 100 % fresh air assumption. The saving of cooling load on the coil was found maximum (64.19%) in the month of April due to lower outside temperature and minimum (27.36%) for the month of June due to higher outside temperature. The proposed system can be made more energy efficient by utilising the exhaust air in cooling the condenser of VCR system which will improve the COP & hence reduce the power consumption of the compressor.