内遮阳对室内环境同时具有遮阳和遮光的影响,同时内遮阳在遮阳的同时又吸收了热量,形成了室内热源.因此对于内遮阳的整体能效性能的评价始终处于定性的感性评价.研究针对内遮阳对室内光热环境影响的量化,开展了内遮阳作用下的室内围护结构内表面温度测试和自然采光照度测试.研究表明,设置内遮阳的房间的各内墙表面温度比未设置内遮阳的房间低0.6～1℃；内遮阳表面温度高于其他内墙表面温度3～5℃,可见内遮阳在太阳辐射的作用下同时也形成了1个室内热源；同时设置内遮阳的房间的空调能耗比未设置内遮阳的房间下降了17.24％,说明内遮阳对于降低室内空调负荷具有一定的作用；但设置内遮阳房间的自然采光照度却下降了81％,由此产生的人工照明电耗是未设置内遮阳测试房间的1.88倍.%The internal shading can both impact on the sunshade and indoor daylighting, and work as an indoor heat source by absorbing heat. Presently the evaluation of overall energy efficiency of the internal shading is perceptual and qualitative. Therefore, the tests of the internal surface temperatures of house envelopes and the daylighting illuminance were carried out. It is shown that the surface temperature of interior walls with internal shading are 0. 6℃- 1℃ lower than those without; however, the surface temperature of internal shading is 3℃ ~ 5℃ higher than that of the interior walls. It can be seen that internal shading also forms an indoor heat source. The energy consumption of air-conditioning with internal shading decreases by 17. 24% than that without, which indicates the internal shading can certainly reduce the indoor air conditioning load; however, the daylighting illuminance declines by 81%, with the results that the artificial lighting energy consumption is 1. 88 times as much as that without the internal shading.
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