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  •   Open Research
  • AUT Faculties
  • Faculty of Design and Creative Technologies (Te Ara Auaha)
  • School of Engineering, Computer and Mathematical Sciences - Te Kura Mātai Pūhanga, Rorohiko, Pāngarau
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Making the Urban Sky View Factor With Numerical Models Consistent With Radiation Heat Transfer Theory

Rehman, N; Anderson, T; Nates, R
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http://hdl.handle.net/10292/14964
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Abstract
This work proposes a method for removing the inconsistency between the numerical models used for determining the sky view factor (SVF) in an urban environment and fundamental radiation heat transfer theory. For this purpose, a transformation of the coordinate system from global to surface was developed, which corrected the measurement of the angular coordinates of the elements in the discretized sky vault. The transformation was deployed in a published numerical model and was validated in a non-urban environment with a widely used analytical expression for the SVF, with which it was found to be in excellent agreement. The method was subsequently applied to an urban scenario and the results were compared with the original numerical model. The proposed method provides a better determination of the SVF as a function of the surface azimuth and tilt angle.
Keywords
Sky view factor; Sky vault; Sky element
Source
Journal of Solar Energy Engineering, Paper No: SOL-21-1181. DOI: https://doi.org/10.1115/1.4053975
Item Type
Journal Article
Publisher
ASME International
DOI
10.1115/1.4053975
Publisher's Version
https://asmedigitalcollection.asme.org/solarenergyengineering/article-abstract/doi/10.1115/1.4053975/1137836/MAKING-THE-URBAN-SKY-VIEW-FACTOR-WITH-NUMERICAL
Rights Statement
© 2021 The American Society of Mechanical Engineers. After the publication of the final paper, the Accepted Manuscript version is eligible for inclusion in an Institutional Repository to meet governmental, funder, or institutional accessibility requirements.

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