含密封空气层冷辐射板的换热分析与实验测试  

Heat Transfer Analysis and Experimental Measurement of Ceiling Radiant Cooling Panel with Sealed Air Layer

作　　者：陈伟 涂敏 张子文 张伟 CHEN Wei;TU Min;ZHANG Zi-wen;ZHANG Wei(College of Civil Engineering,University of South China,Hengyang 421001,China;Key Laboratory of“Assembled Building Energy Saving Technology”of Hunan Province,Hengyang 421001,China;Guangdong Haiwu Technology Co.,Ltd.,Dongguan 523635,China)

机构地区：[1]南华大学土木工程学院,衡阳421001 [2]湖南省“装配式建筑节能技术”重点实验室,衡阳421001 [3]广东海悟科技有限公司,东莞523635

出　　处：《科学技术与工程》2023年第15期6368-6377,共10页Science Technology and Engineering

基　　金：国家自然科学基金青年科学基金(51708272)。

摘　　要：目前,辐射供冷技术在建筑节能中的运用愈加广泛,但结露问题仍制约辐射供冷技术的进一步推广。新的研究发现含密封空气层冷辐射板可有效消除辐射板表面温度不均匀性,具有较好的抗结露能力。对含密封空气层的冷辐射吊顶板进行传热分析,并在此基础上建立数学传热模型;紧接着设计了正交实验验证传热模型的准确性;然后分析比较了实验结果与计算结果得出拟合精确度,并讨论不同参数下辐射板的传热性能。研究表明,本辐射板单位面积供冷量可达136.47 W/m^(2),冷辐射板表面温度均匀度可达到98.4%,证实本辐射板供冷性能优越,表面温度均匀,抗结露性能良好。At present,radiant cooling technology is more and more widely used in building energy conservation,but the condensation problem still restricts the further promotion of radiant cooling technology.The ceiling radiant cooling panel with the sealed air layer was found to effectively eliminate the inhomogeneity of the surface temperature of the radiant plate by a recent study,resulting in a decent anti-condensation ability.The heat transfer analysis of the ceiling radiation cooling panel with the sealed air layer was carried out,and a mathematical heat transfer model was established and verified by an orthogonal experiment.Then,the experimental results and calculation results were compared and the heat transfer performance of the radiant plate under different parameters was discussed.The results show that the cooling capacity per unit area of the radiant panel can reach 136.47 W/m^(2),and the surface temperature uniformity of the ceiling radiation cooling panel can reach 98.4%,which proves that the radiant panel has superior cooling performance,uniform surface temperature and remarkable anti-condensation ability.

关 键 词：辐射供冷 数学模型 冷辐射吊顶 防结露 实验研究 

分 类 号：TB65[一般工业技术—制冷工程]