Optimisation of commercial buildings envelope to reduce energy consumption and improve indoor environmental quality (IEQ) using NSGA-II algorithm

Nazari, Sarah; Sajadi, Behrang; Sheikhansari, Iman

doi:10.1080/01430750.2022.2157482

Cited by 5 publications

(1 citation statement)

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“…Several studies have been conducted concerning the impact of windows and shading devices on building energy consumption. While it is demonstrated that a WWR of 80% would lead to high building energy efficiency, 17 in general, window shape would not affect the building energy consumption; in contrast, its position affects the light distribution, and higher‐up windows facilitate lighting the back of the room more than its center 18 . Using a genetic algorithm to optimize a building envelope for housing in Oman resulted in energy savings of around 16.56% in Salalah city (warm‐humid climate), 25.93% in Muscat (hot‐humid climate), and 28.46% in Buraimi (hot‐dry climate); the optimal window system for all these climates turned out to be single‐layer tinted glazing, with an overhang/side shading, with a depth of 50 cm 19 .…”

Section: Introductionmentioning

confidence: 99%

A multi‐objective optimization approach to designing window and shading systems considering building energy consumption and occupant comfort

Nazari

Mohammadi

Sareh

2023

Engineering Reports

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The energy performance of a building has a significant impact on the environment as well as the comfort of its occupants. Given that window systems and control elements such as shading devices play a critical role in a building's energy consumption and comfort, this article presents an investigation into the optimization of windows in four different orientations, along the four cardinal directions, for a typical office room in Tehran. The objective is to reduce cooling, heating, and lighting energy consumption while improving occupant comfort simultaneously, using the NSGA‐II algorithm as a multi‐objective optimization method. To this end, first, an investigation into the effects of various parameters on total building energy consumption and occupant comfort is conducted. Subsequently, each parameter is evaluated in detail concerning its impact on each façade. As the final step, for each façade, the optimal solutions and the most undesirable scenarios are determined. The results, in which the possibility of glare is also considered, can be used by architects and designers for making informed design decisions. The results show that, in all orientations, the number of slats and their distance from the wall are the most effective parameters of shading configurations. Although the eastern and western windows are larger in this study, visual discomfort can be controlled using suitable shadings to achieve acceptable levels of visual comfort. Furthermore, north façades provide the least amount of thermal comfort and consume the least amount of energy while experiencing glare for longer periods.

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Section: Introductionmentioning

confidence: 99%