| 摘要 |
PURPOSE:To permit the stable heat collecting operation of a solar energy-system by using a system in which a control valve interlocked with a pressure detector is provided in the bypass of a pump in such a way as to control the internal pressure of the system within a set pressure range. CONSTITUTION:When operating a circulating pump 23, a heat medium in a water supply tank 31 flows toward a delivery pipe 24 side and also in a bypass 29, and the heat medium in the water supply tank 31 is supplied into the system by the action of a jet pump 27. When the pressure of the system is lowered, the pressure drop is detected by a pressure switch 26 and a solenoid valve 28 is opened. As a result, the water supplying and pressurizing action of the jet pump 27 is again started to raise the internal pressure of the system, whereby permitting the heat collecting operation to be performed under stable pressure. |
