高空隙率を有する多孔質レシーバの伝熱特性

抄録

Heat flux measurements of a 1 kW solar simulator owned by our laboratory were carried out using two Gurdon meters, and the measurements were taken at the height of the solar simulator focal point (930 mm from the ground) with a square size of 85 mm x 85 mm. A total of 289 measurement points were measured. The average heat flux per point was 67.43 kW/m2, 98.72 kW/m2, and 132.65 kW/m2. The average heat flux per point was 67.43 kW/m2, 98.72 kW/m2 and 132.65 kW/m2. The heat flux was calculated as the total heat flux of 289 points divided by the area of one grid, and the average heat flux was calculated as the heat flux of an arbitrary scanning area divided by the total grid area. At 100% simulator output, the heat fluxes of 1.14 kW, 0.99 kW, and 0.39 kW were recorded for areas of 85 mm × 85 mm, 65 mm × 65 mm, and 35 mm × 35 mm, respectively, and the average heat fluxes per point were 158.38 kW/m2, 234.41 kW/m2, and 314.97 kW/m2. The highest heat flux was 504.72 kW/m2 . The highest heat flux of 504.72 kW/m2 was recorded. The heat flux at 100% output was almost twice as high as that at 60% output. A numerical analysis of the volumetric receiver was performed to study the air flow, outlet temperature and heat collection in the receiver. The maximum outlet temperature was recorded as 1136 K at 100% simulator output and 754.2 K at 60% output. At a flow rate of 3.0 g/s, the heat collection was 578.9 W at 100% simulator output and 243.7 W at 60% simulator output.