A Methodology for daylight optimisation of high-rise buildings in the dense urban district using overhang length and glazing type variables with surrogate modelling

Berk Ekici,Michela Turrin,Tuğçe Kazanasmaz,I Sevil Sariyildiz,M Fatih Tasgetiren

doi:10.1088/1742-6596/1343/1/012133

Berk Ekici, Michela Turrin + Show 3 more

Open Access

https://doi.org/10.1088/1742-6596/1343/1/012133

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Abstract

Urbanization and population growth lead to the construction of higher buildings in the 21st century. This causes an increment on energy consumption as the amount of constructed floor areas is rising steadily. Integrating daylight performance in building design supports reducing the energy consumption and satisfying occupants’ comfort. This study presents a methodology to optimise the daylight performance of a high-rise building located in a dense urban district. The purpose is to deal with optimisation problems by dividing the high-rise building into five zones from the ground level to the sky level, to achieve better daylight performance. Therefore, the study covers five optimization problems. Overhang length and glazing type are considered to optimise spatial Daylight Autonomy (sDA) and Annual Sunlight Exposure (ASE). A total of 500 samples in each zone are collected to develop surrogate models. A self-adaptive differential evolution algorithm is used to obtain near-optimal results for each zone. The developed surrogate models can estimate the metrics with minimum 98.25% R2 which is calculated from neural network prediction and Diva simulations. In the case study, the proposed methodology improves daylight performance of the high-rise building, decreasing ASE by approx. 27.6% and increasing the sDA values by around 88.2% in the dense urban district.

Highlights

High-rise buildings have been designed to gain additional floor area in the limited urban plot since the early examples [1]
This study presents a methodology to optimise daylight performance of a whole high-rise building located in a dense urban district considering a variety of parameter sets at different zones of the building
Since the optimised Annual Sunlight Exposure (ASE) range was very narrow for all zones, results having the highest spatial Daylight Autonomy (sDA) values were picked

Summary

Introduction

High-rise buildings have been designed to gain additional floor area in the limited urban plot since the early examples [1]. Owing to a raise in constructed spaces, this suggests an increment on the energy consumption to meet the requirements for thermal and visual comfort [2]. In this respect, daylight becomes an important performance aspect for high-rises, because designing spaces with good daylight performance helps reducing the energy consumption and satisfying occupants’ comfort requirements. Daylight becomes an important performance aspect for high-rises, because designing spaces with good daylight performance helps reducing the energy consumption and satisfying occupants’ comfort requirements This is a complex task owing to design decisions given in the conceptual phase. Many design parameters such as shape of the building, design of the shading devices, and material properties, suggest an enormous number of design alternatives affecting the building

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Conclusion