拉萨新民居建筑冬季室内热环境影响因素分析

Analysis on influence factors of indoor thermal environment of new residential buildings in winter in Lhasa

现今拉萨地区大量出现集中搬迁村庄,被动太阳能技术得到广泛应用,此类新建筑形式已为多数居民所接受,但其室内热环境仍有待调研.因此,本文对拉萨地区搬迁新建筑室内热环境现状进行测试调研,通过与旧建筑对比,全面分析了影响其室内热环境的因素,发现新建筑室内温度偏低,且较旧建筑仅高0.8℃,室内热环境仍有待改善.同时,对调研结果中存在较大问题的空间结构和直接受益窗设计进行了深入模拟研究.结果表明:南向采用深色玻璃+白天窗帘全开的模式较现阶段常用的透明玻璃+白天窗帘闭合模式的室内平均温度高1.2℃,且可改善室内采光;提高客厅围合性可以使室内平均温度增加1.3℃,负荷降低17.3%.

Nowadays,the number of many centrally relocated villages in Lhasa where passive solar energy-saving technologies in Tibet are with increasing frequency.The new style building has been accepted by most residents,but its indoor thermal environment remains to be investigated.Therefore,the article makes measurements and investigations in centrally relocated villages and contrast it with old building,and analyzes fully the impact of correlated building characters.It is found that the room temperatures of the new building is low,only 0.8℃higher than that of the old building.Its indoor thermal environment remains to be improved.The results inspire us to focus on a deep modeling simulation study of sick designs of structure and direct benefit windows.Results show that the model of colored glass in south and fully opened windows can increase the indoor average temp erature by 1.2℃as compared with model of transparent glass and fully open window and can improve indoor lighting.In enhancing enclosed standard of room,the average room temperature can increase 1.3℃and decrease the load by 17.3%.