Performance prediction of solar air heater having roughened duct provided with transverse and inclined ribs as artificial roughness

被引：48

作者：

Varun ^{[1
]}

Patnaik, Amar ^{[1
]}

Saini, R. P. ^{[2
]}

Singal, S. K. ^{[2
]}

Siddhartha ^{[1
]}

机构：

[1] NIT, Mech Engg Dept, Hamirpur 177005, India

[2] Indian Inst Technol, AHEC, Roorkee 247667, Uttar Pradesh, India

来源：

RENEWABLE ENERGY | 2009年 / 34卷 / 12期

关键词：

Roughness element; Effective efficiency; Thermal efficiency; Taguchi method; FRICTION;

D O I：

10.1016/j.renene.2009.04.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An experimental study has been carried out to investigate the effective efficiency of a solar air heater duct provided with transverse and inclined ribs as artificial roughness elements on the absorber plate. The range of parameters considered for the present investigation; Reynolds number (Re) 2000-14,000, relative roughness pitch (p/e) 3-8 and a fixed value of relative roughness height (e/D) of 0.030. The effective efficiency has been computed based on the experimentally determined values for the range of parameters considered. Further an attempt has also been made to optimize the thermal efficiency for the same system under similar conditions by Taguchi method. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2914 / 2922

页数：9

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