间断供暖房间中热桥效应的动态变化特征

Dynamic Change Characteristics of Thermal Bridge Effect in Intermittent Heating Rooms

夏热冬冷地区冬季房间大多采用间断供暖模式,墙体的温度随着供暖时间发生明显的波动,房间热桥效应随时间的变化也比较明显。利用数值模拟的方法,研究了外墙采用内、外保温方式时房间热桥效应的动态变化特征。研究结果表明,随着供暖时间的增加,房间热桥效应会越来越强,且外保温的热桥效应及其波动幅度均小于内保温;外墙采用内保温时热桥区能耗增加率要比外保温高出50%左右。

Residential buildings in hot summer and cold winter area,intermittent heating is usually used for room heating in winter.The temperature of the wall fluctuates significantly with the heating time,and the thermal bridge effect of the room changes with time.In this paper,the dynamic characteristics of thermal bridge effect in a room with external and internal insulation are studied by numerical simulation.The results show that with the increase of heating time,the thermal bridge effect of room will become stronger and stronger,and the thermal bridge effect of external insulation and its fluctuation range are less than that of internal insulation;the energy consumption increase rate of thermal bridge with external insulation is about 50%higher than that with external insulation.