Nasir, D.S.N.M., Hughes, B.R. and Calautit, J.K. (2016) A CFD analysis of several design parameters of a road pavement solar collector (RPSC) for urban application. Applied Energy, 186 (3). pp. 436-449. ISSN 0306-2619
Abstract
Previous investigations of the Urban Heat Island (UHI) effects have highlighted the long-term negative impacts of urban street canyons on surroundings temperatures that indirectly contribute to global warming. Studies on road pavement solar collector (RPSC) system have shown the potential of reducing the heat from the pavement surface by absorbing the heat from the pavement and harnessing the thermal energy. This study expands the investigation of optimising the RPSC system based on four tested parameters (pipe diameter, pipe depth, water velocity and water temperature) comparing the system performance in terms of Delta T of inlet-outlet, potential thermal collection (PTC) and surface temperature reduction (STR). Two types of external environmental conditions were considered: (i) urban domain resembling a street canyon (ii) flat surface resembling a low density or rural area. ‘De-coupled’ CFD method was employed based on previously author’s published work by simulating the effect of external environment (macro domain) onto RPSC system (micro domain) in two separate CFD modelling. Initially, both domains were validated with numerical and experimental data from previously published works. In comparing the RPSC application in urban domain and flat/rural domain; it was found that the system adjustment based on high and low conditions of water velocity provided the best performance improvement with average 28% higher in terms of PTC and STR as compared to other simulated parameters. Yet, insignificant Delta T (less than 5 K) was obtained with values over 0.02 m in the pipe diameter and in the 0.25 m/s water velocity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Elsevier. This is an author produced version of a paper subsequently published in Applied Energy. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Keywords: | Road solar collector; Hydroponic pipes; Urban canyon; Computational fluid dynamic (CFD); Urban heat island (UHI) |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Feb 2017 12:10 |
Last Modified: | 19 Apr 2017 11:54 |
Published Version: | https://doi.org/10.1016/j.apenergy.2016.04.002 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.apenergy.2016.04.002 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:112558 |
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