HEAT PUMP TYPE HOT WATER SUPPLY DEVICE

摘要

PURPOSE:To obtain a hot water supply device capable of supplying high tempera ture water with high efficiency. CONSTITUTION:A medium temperature and medium pressure refrigerant circuit 1 and a high temperature and high pressure refrigerant circuit 2 constitute a binary refrigerating system. A second condensation liquefied 13 installed to the refrigerant circuit 1 on a lower stage side is designed to preheat supply hot water, which makes it possible to reduce the compression ratio of each refrigerant circuit, enhance the hot water supply performance, and provide supply water at high temperature as well. It is also possible to control the temperature of supply hot water by adjusting the flow rate of the supply hot water.