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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。
In the hot summer and cold winter areas, the intermittent heating mode is often used for room heating in winter. The indoor air temperature changes continuously with the heating time, and the heat transfer of the envelope structure and furniture is an unsteady process. In this paper, numerical simulation methods are used to analyze the heat transfer process of the external walls, interior walls, indoor air and furniture, and the energy consumption of heating generated when the exterior walls adopt external insulation and internal insulation respectively. The results show that when the exterior wall uses external insulation, the total energy consumption of the room is greater than the internal insulation; and due to the local space heating, the energy consumption caused by the internal wall heat transfer to the adjacent chamber is much greater than the external wall to the outdoor heat transfer and indoor furniture. Heat caused by energy consumption.