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Minimizing the thermal bridge through the columns in a refrigeration room

文献类型：期刊论文

作者Jiang XQ3; Lin AQ2; Ma HL1; Li XY3; Li YY3
刊名APPLIED THERMAL ENGINEERING
出版日期2020-01-25
卷号165页码:8
关键词Refrigeration room Thermal bridge Cooling loss Column Heat preservation
ISSN号1359-4311
DOI10.1016/j.applthermaleng.2019.114565
通讯作者Jiang, Xiaoqiang(jiangxq@fjut.edu.cn)
英文摘要Thermal bridges are weakly insulated areas in the envelope of a building that can significantly increase the energy load due to heat dissipation. To improve energy efficiency, a thermal bridge model is established to simulate heat transfer through the column in a refrigeration room. The accuracy of the numerical simulation program is verified by experimental data. A heat preservation method for the column that minimizes the cooling loss is analyzed. The results show that the thermal bridging is mainly due to the steel bar in the column, because the share of the cooling loss attributed to the steel bars is 42.02-55.87%. Moreover, applying heat insulation on the column can provide more energy savings in low-temperature rooms than in high-temperature ones. The most economical thermal insulation method as a function of the height and thickness of the insulation layer is therefore proposed for the low-temperature column. By the optimum method, the amount of heat flux through the whole column section, which includes both reinforced and non-reinforced areas, decreases by 37.34%, and the total cooling loss decreases from 30.23 to 13.66 W, representing a 54.81% reduction. Therefore, a reduction in the cooling loss from thermal bridging is achieved for a low-temperature refrigeration room.
分类号一类
WOS关键词ENERGY-CONSUMPTION ; AIR CURTAINS ; COLD STORES ; FLOW ; OPTIMIZATION ; SENSITIVITY ; PERFORMANCE ; LOSSES ; DESIGN ; MODEL
资助项目Leading project of science and technology plan of Fujian Province[2019H0029]
WOS研究方向Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种英语
WOS记录号WOS:000503314300007
资助机构Leading project of science and technology plan of Fujian Province
其他责任者Jiang, Xiaoqiang
源URL[http://dspace.imech.ac.cn/handle/311007/81272]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Heilongjiang, Peoples R China;
3.Fujian Univ Technol, Sch Ecol Environm & Urban Construct, Fuzhou 350118, Fujian, Peoples R China;
推荐引用方式
GB/T 7714		 Jiang XQ,Lin AQ,Ma HL,et al. Minimizing the thermal bridge through the columns in a refrigeration room[J]. APPLIED THERMAL ENGINEERING,2020,165:8.
APA Jiang XQ,Lin AQ,Ma HL,Li XY,&Li YY.(2020).Minimizing the thermal bridge through the columns in a refrigeration room.APPLIED THERMAL ENGINEERING,165,8.
MLA Jiang XQ,et al."Minimizing the thermal bridge through the columns in a refrigeration room".APPLIED THERMAL ENGINEERING 165(2020):8.

入库方式： OAI收割

来源：力学研究所

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