E3S Web Conf.
Volume 362, 2022BuildSim Nordic 2022
|Number of page(s)||8|
|Published online||01 December 2022|
Performance Evaluation of Built Environment in Local Climate Zones
1 Indian Institute of Technology Roorkee, India
2 College of Engineering Trivandrum, India
* corresponding author: firstname.lastname@example.org
The thermal performance of a building is significantly influenced by the climate around it. It is observed that the microclimate of an urban area is notably different from that of the surrounding regions. This difference is mainly due to the variations in anthropogenic heat, built morphology and surface characteristics. The Local Climate Zone (LCZ) system, effectively classifies the urban areas concerning these climatic variations. This study comprises two sections; the first section explores the climatic differences across LCZs and the impact of urban built morphology on microclimate. For this, three different LCZs – LCZ-2, LCZ-5 and LCZ-9 (high, medium and low density respectively) were modelled within the range of values prescribed in the LCZ system and an analytical study was carried out with the help of the CFD tool – ENVIMET. To understand the influence of urban morphology features on microclimate, LCZ-2, a representative LCZ was chosen and a parametric study of variations in morphology variables was carried out. It was observed that incidence angle, surface characteristics and H/W greatly influence the microclimate. The second section of the study explores the thermal performance of the built environment across the LCZs. A typical 3-bedroom residential building was considered and thermal performance evaluation of the same in three different local climatic conditions was carried out through field measurements. It was observed that heat flux in LCZ-5 (65.5 W/m2) is high compared to that of LCZ-2 (16.6 W/m2) and LCZ-9 (6.04 W/m2). The study points to the significance of location-specific building performance studies and design criteria.
Key words: Local Climate Zone / Urban Climate / Thermal performance / CFD analysis / urban morphology / parametric analysis
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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