Abstract
We have developed the refrigerator and air-conditioner combined system for convenience store. The heating COP of air-conditioner is improved by using exhaust heat of refrigerator. The subcooling degree of the refrigerator is increased by the air-conditioner, so that high efficiency is performed. As compared with the conventional system, it is expected to reduce the annual power consumption about 13.8% through the field test at the convenience store. Non-stop defrost of the air-conditioner can be performed by bypassing the discharge refrigerant of the compressor. Therefore, the temperature drop in the store at the time of defrost is prevented, and amenity is improved.
