| 摘要 |
In one embodiment, a solar heat collecting system includes a heat collector (1) configured to heat a heat medium (11) by a sunray, a 5 heating device (4, 7) configured to heat a heat utilizing fluid by heat of the heat medium (11), and a heat medium flow path (3) configured to circulate the heat medium (11) between the heat collector (1) and the heating device (4, 7). The system further includes a controller (32) configured to control circulation of the 10 heat medium (11) in the heat collector (1) in accordance with an amount of solar radiation of the sunray, or in accordance with a temperature difference between a first temperature of the heat medium (11) at a first position and a second temperature of the heat medium (11) at a second position 15 located downstream of the first position with respect to the heat medium (11). K> x 31 <3( 6(12) ------------- CONTROLLER |
