| 摘要 |
PURPOSE:To make the electric power unrequired for circulating a heat collector heating medium, by providing a bomber drum having a cooling section between a heat collector heating medium inlet side and an utilizing side heat exchanger heating medium outlet side, and making the heat collector heating medium outlet side in communication with an opening having a float valve at the upper part of a bomber drum. CONSTITUTION:When the heating medium 12 in the bomber drum 16 reaches a lower limit level Le, the float 21 is closed. Therefore, the vapor pressure of the heating medium 12 in the bomber drum 16 is kept low. On the other hand, the heating medium 12 in a heat collector 11 absorbs sunlight and evaporates to increase the pressure in the space 13. Thus, a check valve 18 is closed, the evaporated heating medium enters a heat exchanger 2, and after the heating medium release its heat, it opens a check valve 15 to flow into the drum 16. When the liquid level reaches an upper limit Lu, a float valve 21 is opened, the high pressure heating medium vapor in the heat collector acts to the upper part of the drum 16 via an adjusting valve 20 to stop the inflow of the heating medium with the check valve 15 closed and the check valve 18 opened. Thus, without consuming electric power, the heating medium can be circulated. |
