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一、经过情况:湖北省某市新建3700吨冷库,主库分四层,原设计均为-18℃低温库,现根据实际需要将一、二层改为高温库,(外墙垄糠隔热层厚度为600mm 不变)在原三楼地坪上做二毡三油、200厚软木砖、二毡三油、80厚碎石砼保护层。同时,各柱子均作“冷桥”处理,从热工计算看、热阻没有问题,7月份开始降温,9月下旬开始发现:二楼内墙与楼板交结处结霜,缝越大结霜越严重,缝靠近垄糠处与库内有0.3℃温差,并明显感到气体流动。整个库房不供液、库温仍达-2.2℃且湿度达93%,因
First, after the situation: a city in Hubei Province 3700 tons of cold storage, the main library is divided into four layers, the original design are -18 ℃ low temperature library, according to the actual needs of the first and second floor to high temperature library, The thickness of the hot layer is 600mm) Make two felt three oil, 200 thick cork brick, two felt three oil, 80 thick crushed stone concrete protective layer on the floor of the original third floor. At the same time, the columns are made of “cold bridge” treatment, thermal calculation, thermal resistance is no problem, began to cool in July, began to find in late September: the second floor of the inner wall and the floor junction junction frosting, Serious, seams near the furrow and the library have 0.3 ℃ temperature difference, and obviously felt the gas flow. The entire warehouse is not liquid, the library temperature is still up to -2.2 ℃ and 93% humidity, due to