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以太阳能通风墙为研究对象,利用已建成的1∶1实体模型,针对不同构造的集热板、集热罩和热传输方式对太阳能通风墙热性能的影响进行了试验研究。试验结果表明,集热墙与地下蓄热式通风口同时开启的工况下,白天室内平均温度提高了7.6℃,夜间提高了1.8℃,且温度下降速率缓慢,有效地抑制了室温的波动;单框双玻塑钢集热罩腔体内温度白天的峰值为62.3℃,在20:00室外温度为6.1℃的情况下仍能达到16.5℃左右,比Ⅰ型高1.8℃,阻止了腔体热量损失的减少,提高了建筑的热稳定性;蓝膜集热板白天的集热效率比普通集热板高3%左右,夜间的保温性能更是比其高出了一倍。
Taking the solar ventilation wall as the research object, the solid 1: 1 model has been built and the influence of the heat collecting panels, heat collecting covers and heat transfer modes on the thermal performance of the solar ventilation wall has been studied. The experimental results show that under the condition that the heat collecting wall and the underground regenerative vent are opened at the same time, the indoor average temperature during the day increases by 7.6 ℃, and the nighttime increases by 1.8 ℃, and the temperature drop rate is slow, effectively suppressing the room temperature fluctuation; The single-box double-glass steel collector cap has a peak daytime temperature of 62.3 ° C and still achieves about 16.5 ° C at an outdoor temperature of 20 ° C of 6.1 ° C and 1.8 ° C higher than type I, preventing the loss of heat in the cavity Of the decrease, improve the thermal stability of the building; blue-sheet heat collector heat collection efficiency during the day and about 3% higher than the average collector, the night of the insulation performance is even more than doubled.