Computational Investigation of Urban Heat Island Mitigation Scenarios in Educational Buildings

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2023-1-11

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Yazıcıoğlu, Gülin

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Recent years have witnessed rapid urbanization due to an increase in population in cities. This will lead to the replacement of natural landscapes with impervious surfaces, and the acceleration of anthropogenic activities, which will increase waste heat. As a result of this, there is a temperature difference between the city centers and their suburbs, which is commonly referred to as an Urban Heat Island (UHI). As a result of the UHI phenomenon, many negative effects are associated with it, such as increased energy consumption, discomfort both indoors and outside, as well as health problems related to it. Compared to other types of buildings, educational buildings are distinguished by their large size, high density of people, and number of unique challenges. Although several studies have been conducted on UHI effects, there has not yet been a comprehensive analysis of UHI effects on educational buildings. This thesis describes a method for generating modified weather files based on UHI for various mitigation scenarios. The six scenarios developed include Cool Pavement (CP), Cool Facade (CF), Green (GR), Cool Pavement-Green (CPGR), and Cool Facade-Green (CFGR), as well as a combination of all these scenarios using ENVI-Met. In this manner, it is possible to examine the impact of each mitigation scenario on outdoor thermal comfort, indoor overheating degrees (IOD), and heating loads. As a result, CP is the most reasonable scenario for mitigating UHI effect as well as decreasing heating loads whereas CFGR is better for decreasing indoor overheated air temperature. In addition, GR scenario performs better for achieving reduced perceived temperature in summer.

Subject Keywords

ENVI-Met, Building heating load, Mitigation scenarios, Thermal comfort, Urban heat island

URI

https://hdl.handle.net/11511/101908

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

G. Yazıcıoğlu, “Computational Investigation of Urban Heat Island Mitigation Scenarios in Educational Buildings,” M.Arch. - Master of Architecture, Middle East Technical University, 2023.