| 摘要 |
PURPOSE:To contrive to facilitate construction work and to reduce radiation loss from piping, by a method wherein a heat collector and a heat-accumulating tank are connected to each other by a single pipe, and supply of water and draining are conducted alternately. CONSTITUTION:The heat collector 31 provided with an air vent valve 33 and the heat-accumulating tank 34 are connected to each other by a single heat-collecting pipe 33, which is provided with a heat-collecting pump 34 for supplying water into the heat collector 31 and with a solenoid valve 35 on the discharge side of the pump 34. The pipe on the suction side of the pump 34 is branched into a pipe 36 connected to an upper part of the tank 32 and a pipe 37 connected a lower part of the tank 32, a check valve 38 of the direction for flowing into the tank 32 is provided in the pipe 36, and a check valve 39 of the direction for flowing out from the tank 32 is provided in the pipe 37. When the difference between the detection value of a high temperature side sensor 42 and that of a low temperature thermo-element 43 of a temperature difference thermo-element 41 reaches a predetermined value, the solenoid valve 35 is opened, water is supplied into the heat collector 31 by the pump 34 through the pipe 37, the valve 39 and the pipe 33, and when the collector 31 is filled up with water, the pump 34 is stopped and the valve 35 is closed. When water in the collector 31 is heated, the valve 35 is opened to drain the water into the upper part of the tank 32 through the pipes 33, 36 and the check valve 38. Thereafter, the supply of water and draining are conducted alternately. |
