| 摘要 |
PURPOSE:To improve the efficiency of solar energy collection by a structure wherein a heat exchanger is arranged at the top of a plate-shaped vessel in the intersecting direction with a plmallity of steam passages which are connected in parallel to constitute the plate-shaped vessel and a Fresnel lens is provided for converging sun beams on the plate-shaped vessel. CONSTITUTION:A heat collecting plate 1 comprises the plate-shaped vessel made of two thin plates provided with a plurality of linear projections arranged in parallel in the width direction and coupled with each other, with a number of indenpendent steam passages 21, 22... defined therebetween. Each steam passage 21, 22... is opened only at the top end. The inside thereof is evacuated and poured with an appropriate amount of heat medium 4 and then, the opened end is sealed. Thus, a heat pipe is obtained. At the top end of thus constructed plate-shaped vessel, there is placed the heat exchanging part 5 in the intersecting direction with the respective passages 21, 22..., through which a cooling medium 6 is flowed. This plate-shaped vessel is disposed on a roof or the like with some inclination. The Fresnel lens 7 is provided for converging sun beams on the plate-shaped vessel. |
