摘要
西部强太阳辐射地区特殊的气候条件与采暖方式使居住建筑围护结构保温设计需求与其他城市存在差异。因此需要探究该地区城镇居住建筑围护结构实际传热特性并提出适宜的保温设计方法。本文以拉萨为例,通过气象数据分析和实地热环境测试,发现高强度太阳辐射造成的各朝向外墙受到室内外双向动态边界条件的影响表现出有差异的动态传热特性,且一维稳态传热假设不能有效反映此现象。以充分利用太阳能并准确反映围护结构实际传热过程为原则,提出一种基于动态传热假设的太阳能利用型高精度保温设计方法和能够反映真实气象特征的室外计算参数统计方法。并通过对比不同保温设计方法,发现太阳能利用型保温设计对提高围护结构热工性能与建筑节能性效果更佳。
The thermal insulation design requirements of residential buildings envelope in areas with strong solar radiation in Western China are different from cities in other parts of China because of the special climate and heating measures.In order to propose an appropriate thermal insulation design method,it is necessary to explore the actual heat transfer mechanism of the urban residential building envelope in this region.Taking Lhasa as an example,and by analyzing meteorological data and field thermal environmental testing,this paper found that the one-dimensional steady-state heat transfer hypothesis cannot effectively reflect different dynamic heat transfer characteristics of exterior walls with different orientations under dynamic boundary conditions of indoors and outdoors due to strong solar radiation.Therefore,a new precise dynamic insulation design method of solar energy utilization was proposed in order to make full use of solar energy and accurately reflect the actual heat transfer process of the envelope.At the same time,a new generation method of outdoor design parameters was also proposed to accurately reflect actual meteorological data.In addition,by comparing different insulation design methods,this study found that the new dynamic design method is more effective in improving the thermal performance of building envelope and building energy-saving performance.
作者
张率
姚慧
李晨
刘衍
索朗白姆
杨柳
ZHANG Shuai;YAO Hui;LI Chen;LIU Yan;SUOLANG Baimu;YANG Liu(State Key Laboratory of Green Building in Western China,Xi'an710055,China;School of Architecture,Xi’an University of Architecture and Technology,Xi'an 710055,China;Architectural design Research Institute,Xi’an,Xi'an710055,China;Institute of Technology,Tibet University,Lhasa 850000,China)
出处
《建筑科学》
CSCD
北大核心
2022年第8期15-22,共8页
Building Science
基金
“十三五”国家重点研发计划项目“目标和效果导向的绿色建筑设计新方法及工具”(2016YFC0700200)
“十三五”国家重点研发计划项目“建筑节能设计基础参数研究”(2018YFC0704500)。
关键词
太阳能利用
保温设计方法
太阳辐射
动态传热
拉萨地区
solar energy utilization
thermal insulation design
solar radiation
dynamic heat transfer
Lhasa
