DOUBLE HOT WATER TANK EMBEDDING HEAT EXCHANGER TUBE

摘要

PURPOSE: A double hot water tank embedding a heat exchanger tube is provided to maximize heat transfer efficiency by enlarging a heat transfer area using a heat exchange medium and a heat exchanger tube in the annular space of a double cylindrical pipe. CONSTITUTION: A double hot water tank is divided into an inner container(31) and an outer container(32). The upper and lower parts of the inner and outer containers are closed. Water is filled in the inner container. Water flows in through an inlet(33) of the inner container and flows out through an outlet(34). An annular space is formed in between the inner container and the outer container, and a heat exchange tube(36) is coiled along the outer face of the inner container. The heat exchange tube is a tube enduring a high pressure of a compressed refrigerant gas passing. According to the heat exchange tube, direct heat emission of the heat exchange tube is restrained. Filling a heat medium enlarges a heat transfer area and reduces a strong contact heat resistance.