FEASIBILITY STUDY ON MULTI－SPLIT AIR CONDITIONING SYSTEM WITH THERMAL ENERGY STORAGE FOR ADJUSTMENT OF RENEWABLE POWER SUPPLY AND DEMAND IN BUILDINGS

In this study, we examined the feasibility of thermal energy storage (TES) in individual distributed air conditioning systems for adjusting the renewable power supply and the cooling/heating demands in buildings. Effective TES schedule was determined based on daily changes in area-dependent prices, as an index representing the renewable power supply, by energy simulation in which cooling/heating loads measured in an office building in Kochi were given as the input. The calculation result indicated that the electricity price in the proposed TES system was reduced by 10.4% in summer and 16.5% in winter from a conventional air conditioning system without TES.