[1]徐 侃,徐新华,严 天.内嵌管式相变顶板简化传热模型研究[J].西安建筑科技大学学报(自然科学版),2021,53(06):897-903.[doi:10.15986/j.1006-7930.2021.06.014 ]
　XU Kan,XU Xinhua,YAN Tian.Study of the simplified heat transfer model of a pipe-embedded phase change material(PCM)slab roof[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(06):897-903.[doi:10.15986/j.1006-7930.2021.06.014 ]
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内嵌管式相变顶板简化传热模型研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年06期
页码:
897-903
栏目:
出版日期:
2021-12-20

文章信息/Info

Title:
Study of the simplified heat transfer model of a pipe-embedded phase change material(PCM)slab roof
文章编号:
1006-7930(2021)06-0897-07
作者:
徐 侃; 徐新华; 严 天
(华中科技大学 建筑环境与能源应用工程系,湖北 武汉 430074)
Author(s):
XU Kan;  XU Xinhua;  YAN Tian
(Department of Building Environment & Energy Engineering, Huazhong University of Science & Technology, Wuhan 430074, China)
关键词:
内嵌管式相变顶板;  相变储能全天供暖;  简化传热模型;  传热分析
Keywords:
pipe-embedded phase change material slab;  phase change energy storage for all-day heating;  simplified heat transfer model;  heat transfer analysis
分类号:
TU831; TK513.5
DOI:
10.15986/j.1006-7930.2021.06.014
文献标志码:
A
摘要:
建筑节能与可再生能源利用是实现碳达峰碳中和的重要技术手段.太阳能集热器-内嵌管式相变顶板系统是一种将相变板内衬于屋顶内侧,可用于房间的隔热保温,并通过相变材料存储太阳能实现全天室内空气供暖的拥有高效节能潜力的系统.为了研究该系统的传热、节能特性,根据该内嵌管式相变顶板的结构形式建立了一种二阶可变热容热阻简化传热模型并提出一种简便的参数配置方式,进一步建立了该结构的数值模型,利用模拟结果验证该简化模型的准确性.结果表明:简化模型的建模方法是可行的,该二阶可变热容热阻简化模型可以预测该内嵌管式相变顶板的传热特性,相比于数值模型,简化模型全天热流误差小于5%; 简化模型的计算效率高于数值模型,其计算时间仅为数值模型的1%.
Abstract:
Building energy conservation and utilization of renewable energy are important technology means for achieving carbon emission peak and carbon neutrality. The system integrating solar collector with pipe-embedded phase change material(PCM)slab roof is a system with high efficiency and energy-saving potential, in which the PCM slab is lined on the internal side of the roof for heat insulation and solar energy can be stored through phase change materials for all-day indoor air heating. In this paper, a simplified heat transfer model of second-order variable thermal capacity and thermal resistance is established based on the structure of the pipe-embedded phase change material slab, and a simple parameter configuration method is proposed. And then, the numerical model of the structure is further established, and the accuracy of the simplified model is verified by the simulation results. The result shows that the modeling method of this simplified model is feasible and this simplified model of second-order variable thermal capacity and thermal resistance can predict the heat transfer characteristics of this slab. Compared with the numerical model, the all-day heat flow error of the simplified model is less than 5%. The computational efficiency of the simplified model is higher than that of the numerical model, and the computational time is only 1% of the numerical model.

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备注/Memo

备注/Memo:
收稿日期:2021-06-08修改稿日期:2021-11-06
基金项目:国家自然科学基金项目(51678263)
第一作者:徐 侃(1996-),男,助理工程师,主要从事节能围护结构研究工作. E-mail: 714200852@qq.com 通信作者:徐新华(1972-),男,教授,博士生导师,主要从事新型围护结构主动被动隔热保温理论与技术研究工作. E-mail: bexhxu@hust.edu.cn

更新日期/Last Update: 2021-12-20