| 摘要 |
<p>PURPOSE:To enable simple and high-efficient boiling of water in a hot water storage tank by a method wherein a bypass circuit in which a pump is located is formed in the vicinity of the heating source of the hot water storage tank, and when it is detected by a sensitivity sensor that the temperature of hot water in the hot water storage tank exceeds a given value, forced convection is generated in the hot water storage tank. CONSTITUTION:A bypass circuit 10 in which a pump 11 is located is formed in the vicinity of a heating source 2, and a hot water supply circuit 9 branched from the bypass circuit 10 is formed. A solenoid on-off valve 12 to close the bypass circuit 10 when hot water is supplied from the hot water supply circuit 9 is mounted in the bypass circuit 10. A temperature sensor 3 to detect the temperature of hot water in the hot water storage tank 1 is mounted in the vicinity of the bypass circuit 10. When a hot water temperature TH in the hot water storage tank 1 exceeds a second set temperature T2, it is held as it is. The hot water temperature TH in the hot water storage tank 1 is compared with a fourth set temperature T4, and when the hot water temperature TH in the hot water storage tank 1 exceeds the fourth set temperature T4, the solenoid on-off valve 12 is opened and through running of a pump 11, forced convention is generated in the hot water storage tank 1. This constitution enables improvement of the heat transfer efficiency of the heating source 2 without deteriorating utilizing ability.</p> |
