Experimental analysis on thermal performance of a solar air collector with a single pass

被引：35

作者：

Yang, Ming ^{[1
]}

Wang, Pengsu ^{[1
]}

Yang, Xudong ^{[1
]}

Shan, Ming ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Bldg Sci, Sch Architecture, Beijing 100084, Peoples R China

来源：

BUILDING AND ENVIRONMENT | 2012年 / 56卷

基金：

中国国家自然科学基金;

关键词：

Solar air collector; Critical parameter analysis; Thermal efficiency; Energy distribution; HEAT-TRANSFER; CONVENTIONAL DESIGN; FLUID-FLOW; PLATE; ENERGY; ENHANCEMENT; EFFICIENCY; CONVECTION; WAVY;

D O I：

10.1016/j.buildenv.2012.04.009

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Five critical parameters may have influence on the thermal performance of a solar air collector with one pass: (1) heat transfer resistance in the airflow channel, (2) height of the stagnant air layer, (3) optical properties of the transparent cover, (4) emittance of the absorber plate and (5) conductive thermal resistance of the back plate. In order to show the actual effects of these parameters, six collectors, each was made by changing one critical parameter mentioned above, were tested under the same working conditions. Thermal efficiency was employed as the main indicator. Results show that decreasing heat transfer resistance in the airflow channel played the most significant role in improving thermal efficiency. Adjusting the height of the stagnant air layer and improving the optical properties of the transparent cover played the secondary role. Increasing the conductive thermal resistance of the back plate and decreasing the emittance of the absorber plate had the least impact. The results would be useful to guide or optimize solar air collector design. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：361 / 369

页数：9

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