Review of Roughness Enhancement of Solar Air Heaters having Different Rib Roughness Geometries on Absorber Plate
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International Journal of Engineering Trends and Technology (IJETT) |  |
| © 2018 by IJETT Journal | ||
| Volume-58 Number-1 |
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| Year of Publication : 2018 | ||
| Authors : Jitender Singh Khurana, Dr.Chandresh Sharma, Ramesh Parihar |
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| DOI : 10.14445/22315381/IJETT-V58P210 |
Citation
Jitender Singh Khurana, Dr.Chandresh Sharma, Ramesh Parihar "Review of Roughness Enhancement of Solar Air Heaters having Different Rib Roughness Geometries on Absorber Plate", International Journal of Engineering Trends and Technology (IJETT), V58(1),46-53 April 2018. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
The value of convective heat transfer co-efficient between the air and absorber plate is the major factor responsible for low heat transfer capacity of a solar air heater. Artificial roughness in the form of repeated ribs is one of the effective ways of improving the performance of solar air heaters. A series of experimental works by various researchers have been reported in this paper, which show that heat transfer rate is increased by application of artificial roughness. In this paper an attempt is made to compare the effect of different rib roughness geometries. Different performance evaluation criteria for evaluation of solar air heater have been used in order to conclude to few optimum “System and operating parameters”.
Reference
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Keywords
solar air heater, heat transfer coefficient, artificial roughness