| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid hot water supply system, capable of attaining reduction in running cost, improvement in energy consumption, and reduction in COemission.SOLUTION: The hybrid hot water supply system 100 typically includes: a hot water storage tank 110; a heat pump water heater 122; a hot water storage determination means 112 which determines whether the hot water storage is a predetermined hot water storage quantity or more; a combustion water heater 130 which supplies hot water to the hot water storage tank when the hot water storage is less than the predetermined hot water storage quantity; a water supply temperature acquisition means 106; an external air temperature acquisition means 150; a heating capability acquisition unit 218 which acquires a heating capability of the heat pump water heater at an acquired external air temperature; an arithmetic unit 220 which computes a hot water supply flow rate of the heat pump water heater based on the acquired water supply temperature and heating capability and a hot water supply temperature; and a correction unit 222 which corrects the predetermined hot water storage quantity by increasing or decreasing it based on the hot water supply flow rate. |
