施工方式对毛细管网辐射末端供热供冷能力的影响  

Influence of construction method on heating and cooling capacity of capillary radiation terminals

作　　者：周慧鑫[1] Zhou Huixin(China Northeast Architectural Design&Research Institute Co.,Ltd.)

机构地区：[1]中国建筑东北设计研究院有限公司

出　　处：《制冷与空调》2025年第2期16-20,共5页Refrigeration and Air-Conditioning

基　　金：中建东北院公司课题“严寒地区高大空间室内非均匀热环境数字化流体仿真技术应用研究”(DBY-2022-03)。

摘　　要：对不同施工方式下毛细管网辐射末端换热能力进行数值计算,从保证舒适性与防结露2个方面得到4种施工方式冬、夏季换热表面温度与换热量限值。结果表明:在舒适性温度限值条件下,地面施工方式面层材料热阻越大,夏季工况供回水平均温度最低限值越低,冬季工况供回水平均温度最高限值越高;当室内空气温度为26℃时,为避免结露的发生,吊顶直接抹灰、吊顶石膏板抹灰、地面湿法+瓷砖面层、地面湿法+地毯面层4种施工方式的室内空气相对湿度须分别低于68%、73%、60%和60%;当毛细管网辐射末端承担的室内冷负荷一定时,吊顶石膏板抹灰方式结露风险最小,地面2种施工方式结露风险最大。The heat transfer capacity of the capillary radiation terminals under different construction methods is numerically calculated, and the surface temperatures and heat transfer limits of four construction methods in winter and summer are obtained from the aspects of ensuring comfort and preventing condensation. The results show that under the condition of comfortable temperature limit, the greater the thermal resistance of the surface material under the ground construction method is, the lower the minimum limit of the average temperature of the supply and return water under the summer working condition and the higher the maximum limit of the average temperature of the supply and return water under the winter working condition become. When the indoor air temperature is 26 ℃, in order to avoid the occurrence of condensation, the relative humidity of indoor air under these four construction methods, namely, direct plastering of the ceiling, gypsum board plastering of the ceiling, wet ground + ceramic tile surface layer and wet ground + carpet surface layer, must be lower than 68%, 73%, 60% and 60%, respectively. When the indoor cooling load undertook by capillary radiation terminals is certain, the risk of condensation using gypsum board plastering of the ceiling method is the least, while the risks of these two construction methods of ground are the highest.

关 键 词：空调 毛细管网辐射末端 防结露 舒适性 换热量限值 

分 类 号：TB69[一般工业技术—制冷工程] TU831[建筑科学—供热、供燃气、通风及空调工程]