Heat transfer and friction characteristics of an equilateral triangular solar air heater duct using inclined continuous ribs as roughness element on the absorber plate

被引：37

作者：

Bharadwaj, Gaurav ^{[1
]}

Kaushal, Maneesh ^{[1
]}

Goel, Varun ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Mech Engn, Hamirpur 177005, India

来源：

INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY | 2013年 / 32卷 / 06期

关键词：

heat transfer; friction factor; roughness element; solar air heater; thermohydraulic performance parameter;

D O I：

10.1080/14786451.2012.724687

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：

An experimental study has been carried out to determine the effect on the heat transfer and friction characteristics of an equilateral triangular solar air heater duct using inclined continuous ribs as roughness element on the absorber plate. The experimental study encompasses the range of Reynolds numbers from 5600 to 28,000, relative roughness height (e/D-h) 0.021-0.043, relative roughness pitch (p/e) 8-16 and angle of attack (alpha) 30-60 degrees. The duct has an aspect ratio (W/(H)) of 1.15. The effect of flow parameters and roughness parameters on heat transfer and friction factor is discussed. The thermohydraulic performance parameter has been determined for the given range of flow parameters and roughness parameters.

引用

页码：515 / 530

页数：16

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