光热建筑一体化Trombe墙体系统传热性能

Heat transfer performance of a photo-thermal Trombe wall system integrated with building

为了改善建筑围护结构的保温隔热性能和利用太阳能,提出了一种光热建筑一体化Trombe墙体系统,建立了实验墙体和模拟计算模型,并对墙体系统的热传递性能进行了实验测试和模拟分析。研究结果表明:实验工况下集热板、主墙层外侧和内侧最高温度测量值分别为91.3、57.9、23.4℃,模拟值为88.4、58.3、17.2℃,墙体系统在冬季具有较好的保温性能;太阳辐射作用下,墙体系统的各材料层均产生竖向温度差,实验工况下竖向温度差为集热板17.9℃、主墙层外侧31.7℃、主墙层内侧2.2℃,模拟值为集热板17.2℃、主墙层外侧21.9℃、主墙层内侧1.2℃;墙体系统各材料表面的竖向温度差随太阳辐射照度增加而增大,随空气夹层厚度增大而减小。

In order to improve thermal insulation property of building envelope and make the most of solar energy,aphoto-thermal Trombe wall system integrated with building was presented.Experimental wall and simulation model were established,thus heat transfer performance of the wall system was tested by experiment and analyzed by simulation.It is found that the thermal insulation property of Trombe wall performs well in winter.The measured maximum temperatures of the collector,the outside and the inside of the main layer are 91.3 ℃,57.9 ℃ and 23.4 ℃,while the simulated figures are 88.4 ℃,58.3 ℃ and17.2 ℃ respectively.Influenced by solar radiation,there exist vertical temperature differences on every material layers of the wall system.The measured vertical temperature differences of the collector,the outside and the inside of the main layer are 17.9 ℃,31.7 ℃ and 2.2 ℃,while the simulated figures are17.2 ℃,21.9 ℃ and 1.2 ℃respectively.The vertical temperature difference of each material layer of the wall system increases with the increase of solar radiation and decreases with the increase of air interlayer thickness.