Studying the effect of “cool” coatings in street urban canyons and its potential as a heat island mitigation technique
Journal article
| Authors | Georgakis, Chrissa, Zoras, Stamatis and 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. |
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. | |
| Keywords | Cool materials; Computational fluid dynamics (CFD); Temperature measurement; Simulation |
| Year | 2014 |
| Journal | Sustainable Cities and Society |
| Publisher | Elsevier |
| ISSN | 22106707 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scs.2014.04.002 |
| Web address (URL) | http://hdl.handle.net/10545/621352 |
| http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| hdl:10545/621352 | |
| Publication dates | Oct 2014 |
| Publication process dates | |
| Deposited | 08 Feb 2017, 12:53 |
| Rights | Archived with thanks to Sustainable Cities and Society |
| Contributors | University of Athens and University of Thrace |
| File | File Access Level Open |
https://repository.derby.ac.uk/item/93474/studying-the-effect-of-cool-coatings-in-street-urban-canyons-and-its-potential-as-a-heat-island-mitigation-technique
Download files
48
total views0
total downloads0
views this month0
downloads this month
Export as
Related outputs
Photovoltaic/Thermal Module Integrated with Nano-Enhanced Phase Change Material: A Numerical Analysis
Cui, Y, Zhu, J., Zoras, S., Hassan, K. and Tong, H. 2022. Photovoltaic/Thermal Module Integrated with Nano-Enhanced Phase Change Material: A Numerical Analysis. Energies. 15 (14), pp. 1-12. https://doi.org/10.3390/en15144988Review of the recent advances in dew point evaporative cooling technology: 3E (energy, economic and environmental) assessments
cui, yuanlong, Zhu, Jie, Zoras, Stamatis and Liu, Lin 2021. Review of the recent advances in dew point evaporative cooling technology: 3E (energy, economic and environmental) assessments. Renewable and Sustainable Energy Reviews. 148, pp. 1-46. https://doi.org/10.1016/j.rser.2021.111345The cradle to gate life-cycle assessment of thermoelectric materials: A comparison of inorganic, organic and hybrid types
Soleimani, Zohreh, Zoras, Stamatis, Ceranic, Boris, Shahzad, Sally and Cui, Yuanlong 2021. The cradle to gate life-cycle assessment of thermoelectric materials: A comparison of inorganic, organic and hybrid types. Sustainable Energy Technologies and Assessments. 44, pp. 1-12. https://doi.org/10.1016/j.seta.2021.101073
A comprehensive review on the output voltage/power of wearable thermoelectric generators concerning their geometry and thermoelectric materials
Soleimani, Zohreh, Zoras, Stamatis, Ceranic, Boris, Cui, yuanlong and Shahzad, Sally 2021. A comprehensive review on the output voltage/power of wearable thermoelectric generators concerning their geometry and thermoelectric materials. Nano Energy. 89, pp. 1-31. https://doi.org/10.1016/j.nanoen.2021.106325Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid
Cui, Yuanlong, Zhu, Jie, Zoras, Stamatis and Zhang, Jizhe 2020. Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid. Renewable and Sustainable Energy Reviews. https://doi.org/10.1016/j.rser.2020.110254Energy performance and life cycle cost assessments of a photovoltaic/thermal assisted heat pump system
Cui, Yuanlong, Zhu, Jie, Zoras, Stamatis, Qiao, Yaning and Zhang, Xin 2020. Energy performance and life cycle cost assessments of a photovoltaic/thermal assisted heat pump system. Energy. https://doi.org/10.1016/j.energy.2020.118108Design of heat sinks for wearable thermoelectric generators to power personal heating garments: A numerical study
Soleimani, Zohreh, Zoras, Stamatis, Cui, Yuanlong, Ceranic, Boris and Shahzad, Salome 2020. Design of heat sinks for wearable thermoelectric generators to power personal heating garments: A numerical study. IOP Conference Series: Earth and Environmental Science. https://doi.org/10.1088/1755-1315/410/1/012096Optimization of a wearable thermoelectric generator encapsulated in polydimethylsiloxane (PDMS): A numerical modelling
Soleimani, Zohreh, Zoras, Stamatis, Ceranic, Boris, Cui, Yuanlong and Shahzad, Sally 2020. Optimization of a wearable thermoelectric generator encapsulated in polydimethylsiloxane (PDMS): A numerical modelling. IEEE. https://doi.org/10.1109/REPE48501.2019.9025156Energy assessment and economic sensitivity analysis of a grid-connected photovoltaic system
Cui, Yuanlong, Jie, Zhu, Meng, Fanran and Zoras, Stamatis 2019. Energy assessment and economic sensitivity analysis of a grid-connected photovoltaic system. Renewable Energy. https://doi.org/10.1016/j.renene.2019.12.127A review on recent developments of thermoelectric materials for room-temperature applications
Solemaini, Zohreh, Zoras, Stamatis, Ceranic, Boris, Shahzad, Sally and Cui, YUANLONG 2019. A review on recent developments of thermoelectric materials for room-temperature applications. Sustainable Energy Technologies and Assessments. https://doi.org/10.1016/j.seta.2019.100604State-of-the-art review of 3DPV technology: structures and models
Cui, Yuanlong, Zhu, Jie, Stamatis, Zoras, Chen, Xiangjie, Bi, Haixia, Qiao, Yaning and Soleimani, Zohreh 2019. State-of-the-art review of 3DPV technology: structures and models. Energy Conversion and Management. 200, p. 112130. https://doi.org/10.1016/j.enconman.2019.112130Design of heat sinks for wearable thermoelectric generators to power personal heating garments: A numerical study
Soleimani, Zohreh, Zoras, Stamatis, Cui, Yuanlong, Ceranic, Boris and Shahzad, Sally 2019. Design of heat sinks for wearable thermoelectric generators to power personal heating garments: A numerical study. IOP Conference Series: Earth and Environmental Science.Techno-economic assessment of the horizontal geothermal heat pump systems: A comprehensive review
Cui, Yuanlong, Jie, Zhu, Ssennoga, Twaha, Junze, Chu, Hongyu, Bai, Xiangjie, Chen, Stamatis, Zoras and Zohreh, Soleimani 2019. Techno-economic assessment of the horizontal geothermal heat pump systems: A comprehensive review. Energy Conversion and Management. https://doi.org/10.1016/j.enconman.2019.04.018Urban environment thermal improvement by the bioclimatic simulation of a populated open urban space in Greece.
Zoras, Stamatis 2013. Urban environment thermal improvement by the bioclimatic simulation of a populated open urban space in Greece. International Journal of Ambient Energy. https://doi.org/10.1080/01430750.2013.829787Experimental investigation of microclimatic conditions in relation to the built environment in a central urban area in Thessaloniki (Northern Greece): A case study.
Kantzioura, Athena, Kosmopoulos, Panos, Dimoudi, Argyro and Zoras, Stamatis 2015. Experimental investigation of microclimatic conditions in relation to the built environment in a central urban area in Thessaloniki (Northern Greece): A case study. Sustainable Cities and Society. https://doi.org/10.1016/j.scs.2015.03.006Operational precise irrigation for cotton cultivation through the coupling of meteorological and crop growth models.
Tsakmakis, Ioannis, Kokkos, Nikolaos, Pisinaras, Vassilios, Papaevangelou, Vasiliki, Hatzigiannakis, Evangelos, Arampatzis, George, Gikas, Georgios, D., Linker, Raphael, Zoras, Stamatis, Evagelopoulos, Vasilis, Tsihrintzis, Vassilios, A., Battilani, Adriano and Sylaios, Georgios 2016. Operational precise irrigation for cotton cultivation through the coupling of meteorological and crop growth models. Water Resources Management. https://doi.org/10.1007/s11269-016-1548-7Transformation of a university building into a zero energy building in Mediterranean climate.
Mytafides, Christos K., Dimoudi, Argyro and Zoras, Stamatis 2017. Transformation of a university building into a zero energy building in Mediterranean climate. Energy and Buildings. https://doi.org/10.1016/j.enbuild.2017.07.083The influence of bioclimatic urban redevelopment on outdoor thermal comfort.
Karakounos, Ioannis, Dimoudi, Argyro and Zoras, Stamatis 2017. The influence of bioclimatic urban redevelopment on outdoor thermal comfort. Energy and Buildings. https://doi.org/10.1016/j.enbuild.2017.11.035Micro- climate adaptation of whole building energy simulation in large complexes.
Zoras, Stamatis, Veranoudis, Sotiris and Dimoudi, Argyro 2017. Micro- climate adaptation of whole building energy simulation in large complexes. Energy and Buildings. https://doi.org/10.1016/j.enbuild.2017.05.060Use of cool materials and other bioclimatic interventions in outdoor places in order to mitigate the urban heat island in a medium size city in Greece
Dimoudi, Argyro, Zoras, Stamatis, Kantzioura, A., Stogiannou, X., Kosmopoulos, Panagiotis and Pallas, C. 2014. Use of cool materials and other bioclimatic interventions in outdoor places in order to mitigate the urban heat island in a medium size city in Greece. Sustainable Cities and Society. https://doi.org/10.1016/j.scs.2014.04.003