Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Mechanical Engineering | en_US |
| dc.contributor.advisor | Law, K. Y. (ME) | en_US |
| dc.creator | Chan, Chak Ming Rodney | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/12423 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Study of mitigating UHI effect through enhanced city convection in Hong Kong | en_US |
| dcterms.abstract | This research studies the wind speed behavior within the Hong Kong Urban context. This aims to explore the correlation between wind speed and thermal sensation, wind speed and solar irradiance. Recommendations were proposed to tackle the Urban Heat Island Effect that are applicable in the Hong Kong circumstance. The hypothesis is to utilize the natural city convection features and manually improve the efficiency in Hong Kong's dense areas. As such, alleviating the issue by reducing the surface temperature. This also maintains a good Thermal comfort amongst pedestrians and minimizes the health risks for people. The methodology is divided into two parts, the approach is divide and conquer, leverages the functions in computational fluent dynamics (CFD). Using two analytical methods to simulate wind flow and pollutants through several buildings in given environments. All models were tailored to Hong Kong Urban Street canyons as reference. The result supports the assumption that thermal comfort can be greatly improved at least 30 % with 0.16 m/s wind speed. This study addresses the effect of irradiance and varying wind speed in changing climatic conditions. The outcome proves that city convection can help local street canyons' environment to reduce radiant heat and surface temperature by 22.3 %. The study suggested practical solutions to achieve neutral thermal sensation for future investigation in the topic. | en_US |
| dcterms.extent | 117 pages : illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2021 | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.LCSH | Winds -- Speed | en_US |
| dcterms.LCSH | Winds -- China -- Hong Kong | en_US |
| dcterms.LCSH | Urban climatology | en_US |
| dcterms.LCSH | Urban heat island | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 6871.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 6.92 MB | Adobe PDF | View/Open |
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