This study describes an experiment using a building which has outside thermal insulation in its exterior walls, through the use of thermal storage via the supply of air through the ceiling plenum. As the differences in total heat load between intermittent cooling/heating and continuous cooling/heating are estimated to be small due to the thermal insulation properties of this building, thermal storage via cooling/heating at night was also experimentally attempted using the existing air-conditioning equipment which was designed for ordinary intermittent cooling/heating. As a result, peak cuts in the heat load, the effective use of electricity at midnight, and improvement in the indoor environment were confirmed by a limited increase in the total heat load.
