| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar heat receiver and a heat collection facility which can suppress a thermal stress due to a temperature difference between a light receiving part and a non-light receiving part, thereby improving durability.SOLUTION: The solar heat receiver includes a casing body 11 which has an opening part 15 where sunlight WL is input and a plurality of heat receiving pipes 30 provided separately from a heat insulation material 16 on an inner periphery of the casing body 11 and separately provided in a peripheral direction to circulate a compressed air inside. The heat insulation material 16 has protrusions 36 which are provided on an irradiation surface 16b of an inner surface 16a of the heat insulation material 16 where sunlight WL is input from the opening part 15 and irradiated between the heat receiving pipes 30 and which are projected toward the inner periphery side. The irradiation surface 16b is set so that the actual surface area per unit area viewed in a diametrical direction toward the outer peripheral side from the inner peripheral side becomes larger than a non-irradiation surface 16c on the inner surface 16a of the heat insulation material 16 where the sunlight WL input from the opening part 15 is not directly irradiated because the heat receiving pipes 30 serve as obstacles. |
