METHODS OF IMPROVING ENERGY EFFICIENCY FOR DOMESTIC AIR CONDITIONING SYSTEMS

In India, Minimum Energy Performance Standard (MPES) is based on Energy Efficiency Ratio (EER) governed by Bureau of Energy Efficiency. The standard EER is calculated at 35°C ambient temperature; moreover, it does not consider varying weather conditions prevailing over a season. Seasonal Energy Efficiency Ratio (SEER) gives a better representation of AC efficiency because it considers seasonal temperature variations also. A comparative analysis is performed for inverter AC vs. conventional AC using standard tests data from the manufacturers to compare EER and SEER values at different ambient temperatures. The effect of temperature differential on AC performance is also studied. The test result indicates SEER values to be more consistent. The important inferences concluded from test results are explained in the last section that will help in saving on running cost.