保温层位置对间断供暖房间不同因素造成能耗的影响

Influence of the Location of Thermal Insulation Layer on Heating Energy Consumption Caused by Different Factors in Intermittent Heating Room

夏热冬冷地区冬季房间供暖常采用间断供暖模式,室内空气温度随供暖时间不断变化,围护结构及家具的传热属于非稳态过程。本文利用数值模拟方法,对外墙分别采用外保温和内保温方式时,房间外墙、内墙、室内空气及家具的传热过程和所产生的供暖能耗进行具体的分析。结果表明,当外墙采用外保温方式时房间总供暖能耗大于内保温;并且由于局部空间供暖,内墙向邻室传热造成的能耗要远大于外墙向室外传热和室内家具吸热所引起的能耗。

Residential buildings in hot summer and cold winter area,intermittent heating is usually used for room heating in winter. The temperature of indoor air is changing with heating time. Heat transfer of thus building envelope and indoor furniture is a unsteady process. This paper analyzes the heat transfer process and heating energy consumption of exterior wall,interior wall,indoor air and furniture in a room,which exterior wall adopts different location of thermal insulation layers using a numerical simulation way. The results show that the total heating energy consumption of exterior wall external thermal insulation is higher than internal thermal insulation.Dues to local heating,the interior wall energy consumption caused by heating transfer is much higher than the energy consumption of exterior wall heat transfer and endothermic furniture.