This paper is published in Volume-6, Issue-2, 2020
Area
Heat Transfer
Author
Dr. Ashwini Kumar
Co-authors
Avinash, Suresh Kumar Badholiya, Rohit Kumar Chaudhry
Org/Univ
National Institute of Technology, Jamshedpur, Jharkhand, India
Pub. Date
20 March, 2020
Paper ID
V6I2-1288
Publisher
Keywords
Relative roughness pitches (p/e), Relative roughness height (e/D), Flow Reynolds number (Re) and Nusselt number (Nu), Booster mirror, Computational fluid dynamics (CFD)

Citationsacebook

IEEE
Dr. Ashwini Kumar, Avinash, Suresh Kumar Badholiya, Rohit Kumar Chaudhry. A critical review on performance of solar air heaters technologies and techniques, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.

APA
Dr. Ashwini Kumar, Avinash, Suresh Kumar Badholiya, Rohit Kumar Chaudhry (2020). A critical review on performance of solar air heaters technologies and techniques. International Journal of Advance Research, Ideas and Innovations in Technology, 6(2) www.IJARIIT.com.

MLA
Dr. Ashwini Kumar, Avinash, Suresh Kumar Badholiya, Rohit Kumar Chaudhry. "A critical review on performance of solar air heaters technologies and techniques." International Journal of Advance Research, Ideas and Innovations in Technology 6.2 (2020). www.IJARIIT.com.

Abstract

The use of flat solar air heaters is extensively worked out in low-temperature solar energy utilization. The efficiency of such heaters has to be low because of the low convective heat transfer coefficient between absorber plate and flowing air which increases the absorber plate temperature, leading to higher heat losses to the ambient. Several designs of solar air heaters having different roughness geometries have been done by a number of investigators. The present paper deals with a comprehensive review of different technologies and methodologies applied for different designs to attain an appropriate enhancement in heat flux. Analytical and experimental result as well as worked out values of result with respect to heat transfer data in terms of Nusselt number, utilizing the equations or correlations developed by various researchers and investigators have been represented with respect to the roughness and flow parameters (p/e, e/D and Re), for the comparison of the rate of heat transfer. The experimental values of the average Nusselt number for multi V roughness have been found to be the highest. However, the addition of a booster mirror to increase the rate of radiant energy and the use of computational methodology has been found even better as compared to the previous one.