Heat transfer enhancement in packed bed solar air heater

Mukesh K  Lalji; R M  Sarviya  and J L  Bhagoria

doi:10.17485/ijst/2011/v4i7.16

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Heat transfer enhancement in packed bed solar air heater

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2011/v4i7.16

Year: 2011, Volume: 4, Issue: 7, Pages: 747-749

Original Article

Heat transfer enhancement in packed bed solar air heater

Mukesh K. Lalji¹ , R.M. Sarviya² and J.L. Bhagoria^2*

¹Department of Technical Education and Skill Development, M.P. Govt. S.V. Polytechnic College, Shyamla Hills, Bhopal-462002 (M.P.);
²Department of Mechanical Engineering, MANIT Bhopal-462007 (M.P.), India
[email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

An experimental investigation has been done on a low porosity packed bed solar air heater. Investigation covers a wide range of geometrical parameters of wire screen matrices, i.e. wire diameter 0.48 mm, pitch 2.3 mm and number of layers from 3-6 and low range of porosity from 0.9614-0.9807 and packing Reynolds number range from 1064-2405. It is seen that heat transfer coefficient and friction factor are strong functions of geometrical parameters of the porous packed bed. A decrease in porosity increases the volumetric heat transfer coefficient.
Keywords: Solar air heater, heat transfer, wire screen matrices