In the solar energy abundant area with heating requirement,due to strong solar radiation,the exterior wall with different orientations of the residential building, especially the south-north exterior walls have great difference in the received solar radiation. To more effectively utilize the solar energy and reduce the heat preservation cost, this difference shall be manifested in the building envelope insulation performance design. In this paper, the solar radiation obtained by the exterior walls with different orientations in the residential building during the heating period was achieved through the analysis of standard annual meteorological database in Lhasa. Compared with the hinterland cities, Lhasa had rich solar energy resource and great orientation difference, and the unbalanced insulation had realistic significance. In addition, the winter field test results indicated that the south-north room had great heat environment difference in the building without heating. In detail, during the test period, the south-oriented room was basically within the thermal comfort scope,while the north-oriented room was colder,far away from the thermal comfort area,and therefore had heating requirement.%在有供暖需求的太阳能资源富集地区,由于太阳辐射强烈,住宅建筑各个朝向外墙,尤其是南北向的外墙所接收的太阳辐射量差异很大,为了更有效地利用太阳能并降低保温成本,这种差异应表现在建筑围护结构保温性能的设计中.本文通过对拉萨市标准年气象数据库的分析得到了其住宅建筑各朝向外墙供暖季内获得的太阳辐射量.与内地城市相比,拉萨市太阳能资源丰富且朝向差异很大,非平衡保温具有一定的实际意义.另外,冬季现场测试表明无供暖建筑的南北朝向房间热环境有所不同,南向房间测试周期内基本处于人体舒适范围内,而北向房间始终偏冷,远离人体热舒适区域,有供暖需求.
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