Studying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation technique

Hdl Handle:
http://hdl.handle.net/10545/621352
Title:
Studying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation technique
Authors:
Georgakis, Chrissa; Zoras, Stamatis ( 0000-0001-6331-1779 ) ; Santamouris, Matheos
Abstract:
Surface temperature measurements carried out during summer period, at canyons’ facades, pavements and street inside a deep urban canyon, in the center of Athens. At the same time experimental data of air temperature were collected through extensive monitoring in the center of the urban canyon. CFD simulations performed in order to calculate surface temperature in buildings’ facades and at street level as well as air temperature inside the canyon. On the first part of this study comparison carried out between the measured and calculated values for a) surface temperature for the initial coating and b) the air temperature in the center of a deep street urban canyon. The calculated data have been thoroughly analyzed and used as well for the CFD model validation. The second task of this work was the calculation of the surface and air temperature, inside the deep urban canyon, by using a “cool” coating and the possible mitigation of the heat island effect in the specific urban area. The use of “cool” coatings, providing high reflectivity of solar radiation on the materials used on pavements and walls inside a canyon, estimated able to decrease surface temperature up to 7–8 °C at ground level. The decrease on walls’ surface temperature estimated close to 2–3 °C. Ambient air temperature inside the urban street canyon may decrease up to 1 °C. The reduction of absorbed solar radiation may lead to the energy consumption and thermal comfort conditions in cities and fight the increased heat island effect.
Affiliation:
University of Athens; University of Thrace
Citation:
Georgakis, C. et al (2014) 'Studying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation technique', Sustainable Cities and Society, 13:20
Publisher:
Elsevier
Journal:
Sustainable Cities and Society
Issue Date:
Oct-2014
URI:
http://hdl.handle.net/10545/621352
DOI:
10.1016/j.scs.2014.04.002
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S2210670714000328
Type:
Article
Language:
en
ISSN:
22106707
Sponsors:
N/A
Appears in Collections:
Department of Mechanical Engineering & the Built Environment

Full metadata record

DC FieldValue Language
dc.contributor.authorGeorgakis, Chrissaen
dc.contributor.authorZoras, Stamatisen
dc.contributor.authorSantamouris, Matheosen
dc.date.accessioned2017-02-08T12:53:07Z-
dc.date.available2017-02-08T12:53:07Z-
dc.date.issued2014-10-
dc.identifier.citationGeorgakis, C. et al (2014) 'Studying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation technique', Sustainable Cities and Society, 13:20en
dc.identifier.issn22106707-
dc.identifier.doi10.1016/j.scs.2014.04.002-
dc.identifier.urihttp://hdl.handle.net/10545/621352-
dc.description.abstractSurface temperature measurements carried out during summer period, at canyons’ facades, pavements and street inside a deep urban canyon, in the center of Athens. At the same time experimental data of air temperature were collected through extensive monitoring in the center of the urban canyon. CFD simulations performed in order to calculate surface temperature in buildings’ facades and at street level as well as air temperature inside the canyon. On the first part of this study comparison carried out between the measured and calculated values for a) surface temperature for the initial coating and b) the air temperature in the center of a deep street urban canyon. The calculated data have been thoroughly analyzed and used as well for the CFD model validation. The second task of this work was the calculation of the surface and air temperature, inside the deep urban canyon, by using a “cool” coating and the possible mitigation of the heat island effect in the specific urban area. The use of “cool” coatings, providing high reflectivity of solar radiation on the materials used on pavements and walls inside a canyon, estimated able to decrease surface temperature up to 7–8 °C at ground level. The decrease on walls’ surface temperature estimated close to 2–3 °C. Ambient air temperature inside the urban street canyon may decrease up to 1 °C. The reduction of absorbed solar radiation may lead to the energy consumption and thermal comfort conditions in cities and fight the increased heat island effect.en
dc.description.sponsorshipN/Aen
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S2210670714000328en
dc.rightsArchived with thanks to Sustainable Cities and Societyen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectCool materialsen
dc.subjectComputational fluid dynamics (CFD)en
dc.subjectTemperature measurementen
dc.subjectSimulationen
dc.titleStudying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation techniqueen
dc.typeArticleen
dc.contributor.departmentUniversity of Athensen
dc.contributor.departmentUniversity of Thraceen
dc.identifier.journalSustainable Cities and Societyen
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