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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11393
Title: Effects of delta-shaped obstacles on the thermal performance of solar air heater
Authors: Bekele A.
Mishra, Manish
Dutta, Sushanta
Published in: Advances in Mechanical Engineering
Abstract: An experimental investigation has been carried out to study the effect of delta-shaped obstacles mounted on the absorber surface of an air heater duct with an aspect ratio 6:1 resembling the conditions close to solar air heaters. This study encompassed the Reynolds number (Re) ranging from 3400 to 27600, longitudinal pitch of the obstacle (P l / e) varied from 3/2 to 11/2, and relative obstacle height (e / H) varied from 0.25 to 0.75. The relative obstacle transverse pitch (P t / b) = 7 / 3 and the angle of attack of flow on obstacle =90°. are kept constant during the whole experimentation. By comparing the heat transfer data obtained from the obstacle-mounted duct with that of smooth duct under similar geometrical and flow conditions, the obstacle-mounted duct enhances the heat transfer by 3.6-times at Re = 7276.82, P l /e= 3 / 2, and e/H = 0.75. Copyright © 2011 Adisu Bekele et al.
Citation: Advances in Mechanical Engineering (2011), 2011(): -
URI: https://doi.org/10.1155/2011/103502
http://repository.iitr.ac.in/handle/123456789/11393
Issue Date: 2011
ISSN: 16878132
Author Scopus IDs: 54881585400
55126794600
55257172900
Author Affiliations: Bekele, A., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Mishra, M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Dutta, S., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Corresponding Author: Bekele, A.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India; email: addisu2005@yahoo.com
Appears in Collections:Journal Publications [ME]

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