| 摘要 |
PURPOSE:To continue to transfer heat medium even when failure occurs in the power source within a station thereby to prevent the waterless heating of the titled system by providing two tanks for accommodating a reserve heat medium in the title focusing type solar heat collecting system. CONSTITUTION:When a failure occurs in the power source within a station, the operation of a circulation pump 2 is stopped to stop the transfer of the heat medium. Upon this occasion, electromagnetic valves 13 and 14 are opened, a reserve medium which has been stored in a tank 10 located at a position higher than that of the focusing type solar heat collector 1, naturally flows down into the tank 12 by way of a connecting pipeline 9, the focusing type solar heat collector 1, and a connecting pipeline 11. As a result, the heat medium passes through the focusing type solar heat collector 1 and the transfer of the heat medium become continuous. The carry-away effect of solar energy continues, the heat storage to the heat medium, and abnormal temperature rise of the heat medium does not occur, and hence waterless heating of the system becomes impossible. When the position of the sun shifts and there is no possibility of waterless heating or the power source in the station is reinstated, the electromagnetic valves 13 and 14 are closed, and the heat medium is returned to the tank 10 by a recovery pump 15, whereby it is possible to prepare for a future emergency. |
