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Simulation assisted design exploration to evaluate view and energy performance of window shading

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conference contribution
posted on 21.01.2021, 10:02 authored by Peiman Pilechiha, Mohammadjavad Mahdavinejad, Arash BeizaeeArash Beizaee
One of the most effective passive cooling strategies for buildings in a hot and dry climate is to use suitable shading devices. Dense shading is more effective in reducing the energy required for cooling, but it reduces visibility through openings. This paper explores the influence of more than 300 fixed shading systems on view to outside and energy consumption of a typical south-facing office building in Tehran, Iran. The shading devices vary in depth, number, angle, and thickness in three types of horizontal, vertical and egg-crate. Among the optimised shading devices, the horizontal shadings were the most frequent and on the contrary, no egg-crate shadings were found. The results showed that when the view to the outside is considered equally important as the energy consumption, the horizontal shadings are most suited. However, where the view to the outside has priority to energy consumption, vertical shadings are the best choice. The smaller the width and number of louvres, the higher the chance to reach the optimal performance. The research objectives were found not sensitive to the louvres’ thickness and angle.



  • Architecture, Building and Civil Engineering

Published in

Proceedings of the 5th IBPSA-England Conference on Building Simulation and Optimization


5th IBPSA-England Conference on Building Simulation and Optimization




AM (Accepted Manuscript)

Rights holder

© The Authors

Publisher statement

This paper was accepted for publication in Proceedings of the 5th IBPSA-England Conference on Building Simulation and Optimization and the definitive published version is available at http://www.ibpsa.org/bso-2020-proceedings.

Acceptance date


Publication date





Bianca Howard; Argyris Oraiopoulos; Eleonora Brembilla


Loughborough, UK (Virtual)

Event dates

21st September 2020 - 22nd September 2020


Dr Arash Beizaee. Deposit date: 19 January 2021

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