A study of a solar air collector with a mixed "porous" and "non-porous" composite absorber

被引：45

作者：

Dissa, A. O. ^{[1
]}

Ouoba, S. ^{[1
]}

Bathiebo, D. ^{[2
]}

Koulidiati, J. ^{[1
]}

机构：

[1] Univ Ouagadougou, UFR SEA, LPCE, BP7021, Ouagadougou, Burkina Faso

[2] LETR, Ouagadougou, Burkina Faso

来源：

SOLAR ENERGY | 2016年 / 129卷

关键词：

Solar air collector; Porous and non-porous absorbers; Unsteady state; Quasi-steady state; Modeling; Simulation and experiment; HEAT-TRANSFER; PERFORMANCE; DESIGN;

D O I：

10.1016/j.solener.2016.01.048

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：

In this work, a solar air collector with a composite absorber is designed and experimented. Its composite absorber results from the coupling of a non-porous absorber made of a corrugated iron sheet and a porous absorber made of a mesh of aluminum. The prototype collector was modeled in unsteady-state by considering heat capacity effects in its components. The temperatures were simulated by solving energy balance equations relating to each component. Solutions to these equations gave temperatures variation according to time of the day and distance from collector inlet. Results show that the collector overall thermal efficiency approximates 61% at solar midday with maximum temperatures of 77, 142, 107 and 73 degrees C respectively for glass cover, non-porous and porous absorbers and airstream. Compared to quasi-steady state studies, unsteady state studies lead to results in better agreement with experiment. Experimental and unsteady state simulated temperatures were very close and unsteady state model therefore allowed predicting suitably collector performances. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：156 / 174

页数：19

共 28 条

[1] Simulation study of solar air heater [J].