Feasibility research on a double-covered hybrid photo-thermal and radiative sky cooling module

被引:26
作者
Hu, Mingke [1 ,2 ]
Zhao, Bin [1 ]
Ao, Xianze [1 ]
Chen, Nuo [1 ]
Cao, Jingyu [1 ]
Wang, Qiliang [3 ]
Su, Yuehong [2 ]
Pei, Gang [1 ]
机构
[1] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Peoples R China
[2] Univ Nottingham, Inst Sustainable Energy Technol, Univ Pk, Nottingham NG7 2RD, England
[3] Hong Kong Polytech Univ, Dept Bldg Serv Engn, Kowloon, Hong Kong, Peoples R China
基金
国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金; 欧盟地平线“2020”;
关键词
Solar energy; Solar heating; Radiative cooling; Passive cooling; Atmospheric window; PERFORMANCE ANALYSIS; CONCEPTUAL DEVELOPMENT; SYSTEM; PCM;
D O I
10.1016/j.solener.2020.01.022
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
As an entirely passive cooling strategy, radiative cooling (RC) is an appealing approach to draw heat from the terrestrial surface to outer space. RC can be easily and effectively realized during the nighttime with the absence of sunlight, which coincidently mismatches the operation time of solar collectors. Therefore, it is of possibility and significance to unite the RC device and solar collector to extend the working period and function. In the present work, a novel combined photo-thermal and radiative cooling (PT-RC) module was proposed, experimentally and numerically investigated. By applying separated heating and cooling components, the PT-RC module demonstrated a daytime stagnation temperature of 159.8 degrees C and a nighttime one of 0.6 degrees C through a consecutive 24 h experimental duration. By contrast, a conventional photo-thermal (PT) module as a reference showed the highest panel temperature of 153.5 degrees C during the daytime and the lowest panel temperature of 7.9 degrees C in the nighttime. Further modeling was conducted to evaluate the thermal performance of the proposed PT-RC module compared with stand-alone PT module and spectrally coupled PT-RC module under different working conditions. This dual-function collector may contribute a potential solution for sustainable energy technology in Zero Energy Building applications.
引用
收藏
页码:332 / 343
页数:12
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