CALCULATION COOLING SEASONAL ENERGY EFFICIENCY AND POWER CONSUMPTION HOUSEHOLD INVERTER AIR CONDITIONER IN VIETNAMESE CLIMATIC CONDITIONS

Abstract

This paper presented the calculation of energy efficiency and power consumption for household air conditioner with inverter technology using bin method in Vietnamese climatic conditions. The data of 53 air-cooled air conditioner models in Vietnamese market with nominal cooling capacity from 9000 to 24000 BTU/hr (2,6  7,1 kW) were used in this study. Based on National Standard TCVN 10273-1:2013 and National Regulation QCVN 02:2009/BXD, the cooling seasonal energy efficiency and power consumption were computed for 10 cities/provinces, these cities/provinces represented different climatic zones in Vietnam. The results were shown that there are quite large deviations between energy efficiency (CSPF) and annual power consumption (C_CSE) from National Standard, National Regulation and manufacturers publish data. The impact of Vietnamese climatic zones on power consumption was also reviewed in this study. Furthermore, the paper suggested upgrading the National Standard and Regulation for inverter air conditioner to evaluate accurately their energy efficiency in Vietnamese climatic conditions.