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毛细管网供暖室内环境对比实验研究

2018-05-23陈金华梁秋锦李楠高亚锋刘红杨雯芳

土木建筑与环境工程 2018年2期

陈金华 梁秋锦 李楠 高亚锋 刘红 杨雯芳

摘要:對重庆地区毛细管网辐射供暖系统进行测试,分析在35 ℃供水工况下毛细管网顶棚、墙面、地面3种敷设方式的室内空气温度、围护结构壁面温度等参数。结果表明:在重庆地区35℃供水工况下,毛细管网顶棚、墙面、地面3种敷设方式供暖稳定时,室内人员活动区平均温度分别为16.53 ℃、16.4 ℃、16.94 ℃、辐射表面平均温度分别为29.21 ℃、28.17 ℃、22.98 ℃,纵向最大温差分别为1.76 ℃、3.16 ℃、0.3 ℃,水平最大温差分别为-0.26 ℃、0.59 ℃、-0.34 ℃,在实验条件下,该地区3种敷设方式供暖时室内温度均≥16℃,毛细管网构造层厚度与敷设位置直接影响室内舒适度。

关键词:毛细管网;敷设方式;辐射供暖;室内舒适度

中图分类号:TU831 文献标志码:A文章编号:16744764(2018)02008807

收稿日期:20170618

基金项目:国家国际科技合作与交流专项(2014DFA62970);重庆市科技研发基地建设计划(cstc2013gjhz90002);重庆市基础与前沿研究计划一般项目(CSTC2014jcyjA90018)

作者简介:陈金华(1973),男,教授,博士生导师。主要从事暖通空调、建筑节能、绿色建筑、可再生能源及新能源开发与利用研究,Email:c66578899@126.com

Received:20170618

Foundation item:National International Scientific and Technology Cooperation and Exchange Projects(2014DFA62970);Chongqing Science and Technology Research and Development Base Construction Project(cstc2013gjhz90002);Chongqing Foundation and Frontier Research Program General Project(CSTC2014jcyjA90018)

Author brief:Chen Jinhua (1973), professor, PhD, main research interests: HVAC, Building energy conservation, Green building, Renewable energy and new energy development and utilization, Email: c66578899@126.com.Capillary radiant heating contrasting experimental research

on indoor environment

Chen Jinhua1, Liang Qiujin2, Li Nan1, Gao Yafeng1, Liu Hong1,Yang Wenfang1

(1a. Chongqing University Key Laboratory of Three Gorges Reservoir Regions EcoEnvironment, Ministry of Education;

1b.National Centre for International Research of Lowcarbon and Green Buildings, Chongqing 400045, China;

2. Chongqing Newopen Real Estate,Co., Ltd. Chongqing 400010, P.R. China)

Abstract:Tests of capillary radiant heating system in Chongqing district were taken and indoor temperature, surface temperature of envelope in condition of three different capillary laying modes (ceiling, wall and floor) with 35 ℃ supply water temperature were analyzed in this paper. The experimental data indicates that in the three different conditions, when the temperature of the supply water is 35 ℃, the average temperature of indoor air is 16.53 ℃, 16.40 ℃ and 16.94 ℃ respectively and that of radiation surface is 29.21 ℃, 28.17 ℃ and 22.98 ℃ respectively. The largest vertical temperature difference tested is 1.76 ℃, 3.16 ℃ and 0.3 ℃ while the largest horizontal difference tested in the direction fall is -0.26 ℃, 0.59 ℃, -0.34 ℃ respectively. It is shown that the system meets the requirements of indoor temperature16℃ in three conditions. Both the thickness of capillary structure layer and the laying mode have an directly influence on the indoor thermal comfort.

Keywords:capillary floor, laying mode, radiant heating, indoor thermal comfort

毛细管网辐射供暖系统作为一种新型低温热水辐射供暖形式,具有舒适度高、安静、卫生安全、节能、蓄热能力较强、节省建筑空间、布置灵活、可利用低品位能源等诸多优势。因此无论是从系统的舒适性还是节能性上考虑,毛细管网辐射供暖系统都有巨大的应用潜力[12]。Miriel等[3]等对毛细管顶棚供冷/供暖进行了软件模拟和实验测试,效果良好;Causone等[4]通过实验研究,提出了冷却吊顶与房间换热的自然对流换热系数和辐射换热系数,并提出了统一参考温度设计及计算的重要性;……

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