哈尔滨地区既有住宅冬季室内热环境研究及其优化设计

Research and Optimal Analysis on Indoor Thermal Environment of Existing Residence in Winter at Harbin

2013年对哈尔滨地区部分既有住宅室内温度测试发现:典型起居室室内平均温度16.2℃,点测90%室内不足18℃;遂采用正交实验法和全因素实验法对哈尔滨地区既有住宅就围护结构及采暖方式进行优化。对比Fluent模拟结果发现,当使用壁挂式采暖器时,采暖温度起主要影响作用,以EPS保温板为例:370 mm外墙选用90 mm厚保温层、PVC三玻窗、采暖器表面温度65℃。当采用表面温度23℃低温辐射供暖时,保温层对其影响较大,370 mm外墙选用100 mm厚保温层、20 mm双玻塑钢窗,当墙体厚度为490 mm时将保温层减少5 mm。

The building investigation of indoor thermal environment in Harbin indicates that typical living room mean air temperature is 16. 2 ℃, 90% indoor air temperature is under 18 ℃. Then orthogonal experiment and all factors experiment are used to optimally analyze the building envelope and heating system in Harbin＇s existing residences, aiming to improve the poor indoor thermal environment. Simulation results compared by Fluent shows that when using panel heater, heating temperature plays a main role and the optimal plan is 90 mm EPS, three glass PVC window and 65 ℃ heating temperature. When using lowtemperature hot water floor radiant heating with 23 ℃ surface temperature, wall insulating plays main function. The optimal plan is 100 mm EPS and 20 mm double glass PVC window. When exterior wall thickness is 490 mm, reducing 5 mm EPS in above plans is suitable.