文章基本信息

标题：'Enhancement of Heat Transfer Rate and Thermal Efficiency of Solar Air Heater by Using Artificial Roughness'-A Review
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作者：Kumthekar Nitin B ; Kurne Prasad S ; Mahadik Mahesh K 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：5
页码：2801
DOI：10.15680/IJIRSET.2015.0405021
出版社：S&S Publications
摘要：Heat energy plays most important role in the field of power generation which involves the heat transferin domestic as well as industrial purposes. Literature shows the heat transfer coefficient between heat transferringsurface and air is low which leads to lower thermal efficiency of the system. Therefore it is important to increase heattransfer coefficient between heat transferring surface and air. The most promising technique to enhance heat transfercoefficient is artificial roughness on heat transfer field. Artificial roughness applied on the absorber plate is the mostacclaimed method to improve thermal performance of solar air heaters at the cost of low to moderate friction penalty.Experimental investigations pertinent to distinct roughness geometries unfolds that the enhancement in heat transfer isaccompanied by considerable rise in pumping power. In view of the fact, a designer needs to carefully examine shapeand orientation of roughness elements in order to choose the best fit roughness geometry for intended application.This dissertation work will cover the types of technique used in enhancing the heat transfer coefficient in field of heattransfer and thermal efficiency.
关键词：Artificial roughness; Solar air heater; Roughness geometry; thermal performance.