Indian Journal of Science and Technology

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Heat Transfer Enhancement in Packed Bed Solar Air Heater


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

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
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  • Heat Transfer Enhancement in Packed Bed Solar Air Heater

Abstract Views: 476  |  PDF Views: 145

Authors

Mukesh K. Lalji
Department of Technical Education and Skill Development, M.P. Govt. S.V. Polytechnic College, Shyamla Hills, Bhopal-462002 (M.P.), India
R. M. Sarviya
Department of Mechanical Engineering, MANIT Bhopal-462007 (M.P.), India
J. L. Bhagoria
Department of Mechanical Engineering, MANIT Bhopal-462007 (M.P.), India

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

References





DOI: https://doi.org/10.17485/ijst%2F2011%2Fv4i7%2F30104