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A parametric sensitivity analysis of the impact of built environment geometrical variables on building energy consumption

Lila, Anas and Lannon, Simon 2017. A parametric sensitivity analysis of the impact of built environment geometrical variables on building energy consumption. Presented at: PLEA: Passive Low Energy Architecture - Designing to Thrive, Edinburgh, UK, 3-5 July 2017. Published in: Brotas, Luisa, Roaf, Susan and Nicol, Fergus eds. Proceedings of 33rd PLEA International Conference, Design to Thrive. Edinburgh: Network for Comfort and Energy Use in Buildings, pp. 121-129.

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Abstract

The growth of urban communities creates the need for analytical frameworks that have a multiobjective and holistic approach. It is important to integrate these frameworks within commonly used architectural tools. The urban environment is mostly designed and formed by architects and urban planners who can create more sustainable urban growth. In this paper, urban geometry will be explored as it has a significant influence on the building heat loss/gain that determines the energy demand needed to achieve indoor thermal comfort. Simulation tools have been created to analyse and optimize urban geometrical variables in a multiobjective approach. This study analysed urban geometrical variables such as (height, capacity, orientation and window to wall ratio). In addition, it gives an insight of the buildings’ inter-shadowing effect by adding the context buildings’ capacity in the grid. The results show that daylighting analysis consumes almost triple the time using multi-objective, multi-zone geometrical iterations. In this set of inputs for hot arid climates there is a minor impact on cooling energy consumption, suggesting that the study daylighting distribution should be postponed to a later design stage rather being a key component of energy analysis in early design stage. This study shows that WWR has the highest impact on the building thermal cooling consumption in this urban context, then comes built area ratio and finally building height for midrise residential buildings.

Item Type: Conference or Workshop Item (Paper)
Date Type: Completion
Status: Published
Schools: Architecture
Subjects: N Fine Arts > NA Architecture
Publisher: Network for Comfort and Energy Use in Buildings
Related URLs:
Date of First Compliant Deposit: 18 August 2017
Last Modified: 25 Feb 2019 22:38
URI: http://orca.cf.ac.uk/id/eprint/102918

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