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Characterising micro-channel absorber plates for building integrated solar thermal collectors
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Oyinlola, Muyiwa Adeyinka and Shire, G. S. F. (2019) Characterising micro-channel absorber plates for building integrated solar thermal collectors. Building Services Engineering Research and Technology, 40 (1). pp. 13-29. doi:10.1177/0143624418783173 ISSN 1477-0849.
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Official URL: https://doi.org/10.1177/0143624418783173
Abstract
This paper discusses the characterisation of micro-channel absorber plates for compact flat plate solar thermal collectors, which are suitable for building integration. Experimental and computational studies were carried out at typical operating conditions for flat plate solar collectors. Three-dimensional numerical analysis using commercial CFD package, ANSYS CFX, showed that heat transfer occurred on only three surfaces of the channel and there was a peripheral variation of the heat flux density. It was also observed that axial thermal conduction could modify the surface boundary at the inlet and outlet; however, the middle section of the channel could be approximated as a rectangular channel with three walls transferring heat under an H1 boundary condition. Experimental studies were used to estimate the standard parameters for predicting performance of the flat plate collectors, which indicated promising performance results. The collector flow factor F″ and the heat removal factor could be improved by increasing the collector capacitance rate; this can be achieved by increasing the mass flow rate per collector area m·/Ac as well as reducing the overall heat loss, UL. This analysis is important for optimising design and operating parameters, especially to minimise temperature gradient in the transverse and longitudinal directions.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Solar collectors, Heat -- Transmission | |||||||||
Journal or Publication Title: | Building Services Engineering Research and Technology | |||||||||
Publisher: | SAGE Publications | |||||||||
ISSN: | 1477-0849 | |||||||||
Official Date: | 1 January 2019 | |||||||||
Dates: |
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Volume: | 40 | |||||||||
Number: | 1 | |||||||||
Page Range: | pp. 13-29 | |||||||||
DOI: | 10.1177/0143624418783173 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | Posted ahead of print. Author(s), Article Title, Journal Title (Journal Volume Number and Issue Number) pp. xx-xx. Copyright © 2018 (Copyright Holder). Reprinted by permission of SAGE Publications. https://doi.org/10.1177/0143624418783173 | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 6 August 2018 | |||||||||
Date of first compliant Open Access: | 6 August 2018 | |||||||||
RIOXX Funder/Project Grant: |
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