遮阳翻板对围护结构表面温度分布影响的实测分析

Field Measurement of Surface Temperature at Building Faade with Louver Blinds

对一栋实际建筑上的翻板-围护结构系统表面温度分布情况进行实测,得出了在夏季晴日条件下,翻板遮阳、设置遮阳的围护结构和未设置遮阳的围护结构表面的温度分布规律;总结了翻板与围护结构之间的温差极值(平均温差极值约为10℃);对比了设置翻板和未设置翻板两种情况下,同一朝向围护结构表面的温度差异.在实测数据的基础上,分析了翻板设置引起的围护结构表面温度变化,对其表面对流换热情况和长波辐射换热过程带来的影响,强调了正确描述这两种过程的重要性.

A field measurement was conducted on to a real building for temperature distribution at its facade and louver blinds in this paper. Half-hourly surface temperature distribution of louver blinds, louvered facade and unlouvered facade were performed by this measurement. From this data, a conclusion on maximum temperature difference （about 10℃ ） between louver blinds and louvered facade was reached. Besides, the surface temperature at louvered facade was compared with that at an unlouvered one. Based on the measurement above, the effect of louver blinds on convective and longwave radiative heat transfer at building facade was briefly analyzed, and the importance to correctly describe these two process was pointed out.