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Wind effects on the performance of solar collectors on rectangular flat roofs: A wind tunnel study

Title:

Wind effects on the performance of solar collectors on rectangular flat roofs: A wind tunnel study

Ladas, Dimitrios, Stathopoulos, Ted and Rounis, Efstratios Dimitrios (2017) Wind effects on the performance of solar collectors on rectangular flat roofs: A wind tunnel study. Journal of Wind Engineering & Industrial Aerodynamics, 161 . pp. 27-41.

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Official URL: https://doi.org/10.1016/j.jweia.2016.12.008

Abstract

Wind induced convection is the main cause of heat loss for roof-mounted solar collectors. In this study the importance of using the actual wind velocity distributions over the whole roof area, instead of a commonly assumed single velocity of a reference location, is addressed through experimental measurements and numerical assessment of the performance of solar collectors placed on different locations over the roof of a typical rectangular building. The measurements were carried out at the Boundary Layer Wind Tunnel of Concordia University, for nine different locations on the roof, three different wind directions and cases concerning both an isolated building and a building with surroundings of various configurations. For the isolated building case, it was found that local velocities on different roof locations may vary more than 60% and the effect of these differences on the performance of solar collectors placed on these locations was assessed. In an attempt to generalize the results, 17 different surrounding configurations were considered. For a typical day in Montreal (with 4–7 m/s average wind speed), it was found that the thermal gains between solar collectors at different locations over the same roof could vary up to 21%.

Divisions:Concordia University > Research Units > Centre for Zero Energy Building Studies
Item Type:Article
Refereed:Yes
Authors:Ladas, Dimitrios and Stathopoulos, Ted and Rounis, Efstratios Dimitrios
Journal or Publication:Journal of Wind Engineering & Industrial Aerodynamics
Date:2017
Funders:
  • Natural Sciences and Engineering Research Council of Canada (NSERC)
  • Smart Net-zero Energy Buildings Strategic Research Network (SNEBRN)
Digital Object Identifier (DOI):10.1016/j.jweia.2016.12.008
ID Code:986030
Deposited By: THEODORE STATHOPOULOS
Deposited On:30 Oct 2019 12:44
Last Modified:30 Oct 2019 12:44
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