夏季大空间屋顶节能喷淋器的实验研究

针对大空间建筑模型进行喷淋效果实验,通过实验得到以下结论:由于Low-E玻璃材料在夏季具有较强的温室效应,未喷淋时,屋顶内表面平均温度为56.8℃,与环境平均温差为21.9℃,增加了空调的能耗。彩钢板屋顶具有较好的保温性能,未喷淋时,屋顶内表面平均温度为40.6℃,模型内部空间平均温度为38.9℃,该温度远低于Low-E玻璃模型温度,能耗比Low-E玻璃模型小。喷淋时,Low-E内层温度比外层温度低约5.4℃;彩钢板内外层温度在喷淋时两者相差不大,仅为0.5℃,喷淋对Low-E玻璃屋顶空调节能意义明显。

Experimental study on large space building's roof sprinkleing nozzle on summer

The roof′s air conditioning load consume about 40% total large space atrium building conditioning load in summer season,so it can get obvious energy saving if the roof air conditioning load was fall down.This experiment focused on the scale effect model of the spraying water cooling system of the large space building′s roof.The folowing conclusions could be drown:without spraying water cooling system,using the Low-E glass as the roof material and it has green house effect and it increase the upload of the air condition,so the mean temperature of the inner roof is about 56.8 ℃ and the difference between ambient temperature is about 21.9 ℃.Using colors steel as the roof material and it has better heat preservation effect,so the mean temperature of the inner roof and inner model is about 40.6 ℃ and 38.9 ℃ respectively.Under the spraying water cooling system,the temperature difference between outer roof and inner roof for the Low-E glass and colors steel is about 5.4 ℃ and 0.5 ℃ respectively,so the spraying water cooling system used on the Low-E glass roof can save energy consume.