Journal article

Tree canopy shade impacts on solar irradiance received by building walls and their surface temperature

Rowan Berry, Stephen J Livesley, Lu Aye



Shading coefficients are used to predict the seasonal and diurnal benefit of architectural shading devices. It is more difficult to model the impact of tree shade on building thermal performance, and data is rare and varies greatly with species and season. We established a range of tree shade amounts and shade qualities from which to develop simple, robust models that predict external wall surface temperatures. We measured percentage shade cover, solar irradiance and external surface temperature on north and west sun-bearing walls of three identical buildings in spring and summer 2010/11. One building was shaded by tall Angophora trees, another by smaller Fraxinus trees and one was unshaded...

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Funding Acknowledgements

This study was part of the 'Energy Saving Benefits of Urban Trees' collaborative research effort between the Melbourne School of Land & Environment, the Melbourne School of Engineering and the Faculty of Architecture, Building and Planning. This research was funded by Nursery and Garden Industry Australia (NGIA) and special thanks goes to Anthony Kachenko for his support and encouragement.