| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a hot water supply system detectable the end of heat storage operation surely with an inexpensive configuration in a hot-water supply system 10 provided with a heat storage device 20 using a latent heat storage material and a heat pump device 30 for storing heat in the heat storage device 20. <P>SOLUTION: Since high pressure in a refrigerant circuit in the heat pump device 30 is not changed during melting of the latent heat storage material and rises when heat storage is continued after melting, the end of heat storage in a latent heat region is determined based on fluctuation of the high pressure to stop a compressor 33. <P>COPYRIGHT: (C)2004,JPO |
