Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation
Urban and building typologies have a serious impact on the urban climate and determine at large the magnitude of the urban overheating and urban heat island intensity. The present study aims to analyze the impact of various city typologies and urban planning characteristics on the mitigation of the...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/5/537 |
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| author | Dionysia Kolokotsa Katerina Lilli Kostas Gobakis Angeliki Mavrigiannaki Shamila Haddad Samira Garshasbi Hamed Reza Heshmat Mohajer Riccardo Paolini Konstantina Vasilakopoulou Carlos Bartesaghi Deo Prasad Mattheos Santamouris |
| author_facet | Dionysia Kolokotsa Katerina Lilli Kostas Gobakis Angeliki Mavrigiannaki Shamila Haddad Samira Garshasbi Hamed Reza Heshmat Mohajer Riccardo Paolini Konstantina Vasilakopoulou Carlos Bartesaghi Deo Prasad Mattheos Santamouris |
| author_sort | Dionysia Kolokotsa |
| collection | DOAJ |
| description | Urban and building typologies have a serious impact on the urban climate and determine at large the magnitude of the urban overheating and urban heat island intensity. The present study aims to analyze the impact of various city typologies and urban planning characteristics on the mitigation of the urban heat island. The effect of the building height, street width, aspect ratio, built area ratio, orientation, and dimensions of open spaces on the distribution of the ambient and surface temperature in open spaces is analyzed using the Sydney Metropolitan Area as a case study for both unmitigated and mitigated scenarios. Fourteen precincts are developed and simulated using ENVI-met the simulation tool. The ambient temperature, surface temperature, and wind speed are extracted. The parameter ‘Gradient of the Temperature Decrease along the Precinct Axis’ (GTD) is introduced to study the cooling potential of the various precincts. In the mitigated precincts, the GTD ranges between 0.01 K/m to 0.004 K/m. In the non-mitigated precincts, the GTD ranges between 0.0093 K/m to 0.0024 K/m. A strong correlation is observed between the GTD of all the precincts, with and without mitigation, and their corresponding average aspect ratio, (Height of buildings to Width of streets). The higher the aspect ratio of the precinct, the lower the cooling potential. It is also observed that the higher the Built Area Ratio of the precincts, the lower the cooling contribution of the mitigation measures. |
| first_indexed | 2024-03-10T03:13:49Z |
| format | Article |
| id | doaj.art-9d8b3aab7a1d436f8e2ae18f550f6f39 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T03:13:49Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-9d8b3aab7a1d436f8e2ae18f550f6f392023-11-23T10:19:30ZengMDPI AGBuildings2075-53092022-04-0112553710.3390/buildings12050537Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island MitigationDionysia Kolokotsa0Katerina Lilli1Kostas Gobakis2Angeliki Mavrigiannaki3Shamila Haddad4Samira Garshasbi5Hamed Reza Heshmat Mohajer6Riccardo Paolini7Konstantina Vasilakopoulou8Carlos Bartesaghi9Deo Prasad10Mattheos Santamouris11Chemical and Environmental Engineering School, Technical University of Crete Kounoupidiana, GR 73100 Chania, Crete, GreeceChemical and Environmental Engineering School, Technical University of Crete Kounoupidiana, GR 73100 Chania, Crete, GreeceChemical and Environmental Engineering School, Technical University of Crete Kounoupidiana, GR 73100 Chania, Crete, GreeceChemical and Environmental Engineering School, Technical University of Crete Kounoupidiana, GR 73100 Chania, Crete, GreeceSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Architecture and Built Environment, The University of Adelaide, Adelaide, SA 5005, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaSchool of Built Environment, UNSW, Sydney, NSW 2052, AustraliaUrban and building typologies have a serious impact on the urban climate and determine at large the magnitude of the urban overheating and urban heat island intensity. The present study aims to analyze the impact of various city typologies and urban planning characteristics on the mitigation of the urban heat island. The effect of the building height, street width, aspect ratio, built area ratio, orientation, and dimensions of open spaces on the distribution of the ambient and surface temperature in open spaces is analyzed using the Sydney Metropolitan Area as a case study for both unmitigated and mitigated scenarios. Fourteen precincts are developed and simulated using ENVI-met the simulation tool. The ambient temperature, surface temperature, and wind speed are extracted. The parameter ‘Gradient of the Temperature Decrease along the Precinct Axis’ (GTD) is introduced to study the cooling potential of the various precincts. In the mitigated precincts, the GTD ranges between 0.01 K/m to 0.004 K/m. In the non-mitigated precincts, the GTD ranges between 0.0093 K/m to 0.0024 K/m. A strong correlation is observed between the GTD of all the precincts, with and without mitigation, and their corresponding average aspect ratio, (Height of buildings to Width of streets). The higher the aspect ratio of the precinct, the lower the cooling potential. It is also observed that the higher the Built Area Ratio of the precincts, the lower the cooling contribution of the mitigation measures.https://www.mdpi.com/2075-5309/12/5/537urban climateurban heat islandurban heat island mitigationcool materialsurban green |
| spellingShingle | Dionysia Kolokotsa Katerina Lilli Kostas Gobakis Angeliki Mavrigiannaki Shamila Haddad Samira Garshasbi Hamed Reza Heshmat Mohajer Riccardo Paolini Konstantina Vasilakopoulou Carlos Bartesaghi Deo Prasad Mattheos Santamouris Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation Buildings urban climate urban heat island urban heat island mitigation cool materials urban green |
| title | Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation |
| title_full | Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation |
| title_fullStr | Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation |
| title_full_unstemmed | Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation |
| title_short | Analyzing the Impact of Urban Planning and Building Typologies in Urban Heat Island Mitigation |
| title_sort | analyzing the impact of urban planning and building typologies in urban heat island mitigation |
| topic | urban climate urban heat island urban heat island mitigation cool materials urban green |
| url | https://www.mdpi.com/2075-5309/12/5/537 |
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