| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater capable of reducing electricity cost, by improving operation efficiency, while simultaneously providing hot water and cold water. <P>SOLUTION: When operating this heat pump water heater, heat is exchanged between water and a high temperature refrigerant by a high temperature refrigerant-water heat exchanger 2, and the heated hot water is stored in a hot water storage tank 8a. At the same time, heat is exchanged between the water and a low temperature refrigerant by a low temperature refrigerant-water heat exchanger 4, and the cooled cold water is stored in a hot water storage tank 8b. Thus, the hot water and the cold water can be simultaneously generated, and the operation efficiency is improved by using the cold water for air-conditioning in a season reducing a use quantity of hot water such as the summer period while using the hot water in a bath, and thus the heat pump water heater for reducing running cost can be provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
