Oyinlola, Muyiwa Adeyinka, Shire, G. S. F. and Moss, Roger W. (2015) Thermal analysis of a solar collector absorber plate with microchannels. Experimental Thermal and Fluid Science, Volume 67 . pp. 102-109. doi:10.1016/j.expthermflusci.2014.10.014 ISSN 0894-1777.

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Abstract

Experimental and theoretical analyses were carried out to investigate the absorber plate temperature distribution for compact (thin and light-weight) solar thermal collectors. An analytic model combining convective heat transfer with axial conduction in the metal plate was developed. Forced convection experiments were then performed on an instrumented metal plate with micro-channels 0.5 mm × 2 mm × 270 mm long, at various flow rates; the heat transfer fluid was Tyfocor® LS. Reynolds numbers were in the range 10–100 and fluid inlet temperatures ranged from 5 to 60 °C. The predicted plate temperature profiles from the analytic model were in close agreement with the measured profiles. Thermal entry lengths were found to be significant and resulted in slight variations at the entry portion of the plate at higher flow rates. The model was used to study the effects of varying design/operating parameters and showed that axial conduction can significantly alter the temperature profile in the plate.

Item Type:	Journal Article
Subjects:	Q Science > QA Mathematics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TP Chemical technology
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH):	Microreactors , Solar collectors, Axial flow , Laminar flow
Journal or Publication Title:	Experimental Thermal and Fluid Science
Publisher:	Elsevier BV
ISSN:	0894-1777
Official Date:	October 2015
Dates:	Date Event October 2015 Published 28 October 2014 Available 18 October 2014 Accepted 1 August 2014 Submitted
Volume:	Volume 67
Number of Pages:	8
Page Range:	pp. 102-109
DOI:	10.1016/j.expthermflusci.2014.10.014
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	European Regional Development Fund (ERDF)

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