Performance study of a dual-function roof solar collector for Chinese traditional buildings application

被引:21
|
作者
Hu, Zhongting [1 ,2 ]
Luo, Bingqing [2 ]
He, Wei [1 ]
Hu, Dengyun [2 ]
Ji, Jie [2 ]
Ma, Jinwei [3 ]
机构
[1] Hefei Univ Technol, Dept Bldg Environm & Equipment, Hefei 230009, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230026, Anhui, Peoples R China
[3] Anhui Jianzhu Univ, Sch Environm & Energy Engn, Hefei 230601, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
Chinese traditional buildings; Modelling; Roof solar collector; Thermal efficiency; NUMERICAL-SIMULATION; THERMAL PERFORMANCE; AIR COLLECTORS; DESIGN; SYSTEM; DYNAMICS; ENERGY; CFD;
D O I
10.1016/j.applthermaleng.2017.09.019
中图分类号
O414.1 [热力学];
学科分类号
摘要
Architectural integration is a crucial issue in the development and spreading of solar collectors, especially in China, where several traditional buildings have pitch roof with tiles. In this paper, a novel roof solar collector (Type 1) providing hot water and space heating is designed to enable effective collection of solar heat as well integrating naturally. A dynamic numerical model is developed and validated with experimental data. The simulation of the Type 1 collector demonstrates its good characteristics regarding to the thermal insulation and transmission of solar radiation. A linear correlation between the instantaneous efficiency and the reduced temperature is established. Simulated results of the Type 1 collector are further compared with the other two types of roof solar collectors (i.e., Type 2 and Type 3). The comparisons indicated that the similar maximum instantaneous efficiency are achieved. However, the Type 1 collector is preferred as its heat loss coefficient is 54.4% lower compared to the Type 2 collector, and is 65.8% lower compared to the Type 3 collector. The afore-mentioned results confirm that the Type 1 collector introduced has potential to address the issue on the poor architectural quality of roof integrated solar collectors for Chinese traditional buildings. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:179 / 188
页数:10
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