Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset
Surfaces such as pavement, buildings, and other heat-absorbing surfaces that store more heat than natural vegetation generate the Urban Heat Island (UHI) effect. Temperatures are known to be significantly higher in urbanized areas compared to rural ones.The application of a reflective surface treatm...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523001195 |
| _version_ | 1797798960900866048 |
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| author | Chaouki Ghenai Oussama Rejeb Timothy Sinclair Naseebah Almarzouqi Nawal Alhanaee Federico Rossi |
| author_facet | Chaouki Ghenai Oussama Rejeb Timothy Sinclair Naseebah Almarzouqi Nawal Alhanaee Federico Rossi |
| author_sort | Chaouki Ghenai |
| collection | DOAJ |
| description | Surfaces such as pavement, buildings, and other heat-absorbing surfaces that store more heat than natural vegetation generate the Urban Heat Island (UHI) effect. Temperatures are known to be significantly higher in urbanized areas compared to rural ones.The application of a reflective surface treatment to the pavement improves its solar reflectivity while lowering the warmth of its surface. The main objective of this study is to assess the performance of a cool pavement in an educational complex parking area, under desert climatic conditions to reduce heat islands. White and high reflective material was applied to the tested parking pavement area. Various experimental techniques were used to assess the performance of non treated (baseline) and treated (cool) pavements including spectral radiation, reflectance (albedo), solar irradiance, and pavement surface temperature. The results show that the coated pavement has a 15 % reflectance in ultraviolet A (UVA) and the untreated pavement has a 17 % solar reflectance (baseline basement). There are no potential dangers to human health posed by the coated pavement's reflection of UVA (For visible wavelengths, coated pavement has a reflectance of roughly 70 %, while uncoated pavement has a reflectivity of only 24 %. Under desert climatic conditions, the results show a net decrease in surface temperature of the coated pavement by up to 15 °C compared to the uncoated one. In the summer, for example, raising the albedo of the pavement surface from 24 % to 70 % lowered the surface temperature from 60 °C to 47 °C. This represents a 22 % decrease in pavement surface temperature. The thermal performance analysis of the cool pavement technology reveals that the pavement surface albedo enhancement will help to increase surface reflectance while lowering pavement surface temperature and offsetting CO2 emissions. Increasing the pavement surface albedo by 192 % (from 24 % to 70 %) for the total treated surface area (81,000 m2) in the educational complex will offset 28,350 tons of CO2. The application of a white coating with a high reflective value on concrete and asphalt pavements will help to extend the life of the pavement, reduce the energy consumption of buildings and the emissions of greenhouse gases, minimize the emissions of carbon dioxide caused by the enhancement of albedo (a strategy for mitigating the effects of climate change), improve parking lot visibility, and deal with the effects of heat islands. |
| first_indexed | 2024-03-13T04:11:44Z |
| format | Article |
| id | doaj.art-aa6bfdab049e49a9bafb06bc715ce89a |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:44Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-aa6bfdab049e49a9bafb06bc715ce89a2023-06-21T06:53:52ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e01940Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offsetChaouki Ghenai0Oussama Rejeb1Timothy Sinclair2Naseebah Almarzouqi3Nawal Alhanaee4Federico Rossi5Sustainable and Renewable Energy Engineering Department, College of Engineering, University of Sharjah, Sharjah, United Arab Emirates; Renewable Energy and Energy Efficiency Research Group, Sustainable Energy and Power Systems Research Center, Research Institute for Sciences and Engineering, University of Sharjah, Sharjah, United Arab Emirates; Corresponding author at: Sustainable and Renewable Energy Engineering Department, College of Engineering, University of Sharjah, Sharjah, United Arab Emirates.Renewable Energy and Energy Efficiency Research Group, Sustainable Energy and Power Systems Research Center, Research Institute for Sciences and Engineering, University of Sharjah, Sharjah, United Arab EmiratesMinistry of Energy and Infrastructure, United Arab EmiratesMinistry of Energy and Infrastructure, United Arab EmiratesMinistry of Energy and Infrastructure, United Arab EmiratesDepartment of Engineering, University of Perugia, ItalySurfaces such as pavement, buildings, and other heat-absorbing surfaces that store more heat than natural vegetation generate the Urban Heat Island (UHI) effect. Temperatures are known to be significantly higher in urbanized areas compared to rural ones.The application of a reflective surface treatment to the pavement improves its solar reflectivity while lowering the warmth of its surface. The main objective of this study is to assess the performance of a cool pavement in an educational complex parking area, under desert climatic conditions to reduce heat islands. White and high reflective material was applied to the tested parking pavement area. Various experimental techniques were used to assess the performance of non treated (baseline) and treated (cool) pavements including spectral radiation, reflectance (albedo), solar irradiance, and pavement surface temperature. The results show that the coated pavement has a 15 % reflectance in ultraviolet A (UVA) and the untreated pavement has a 17 % solar reflectance (baseline basement). There are no potential dangers to human health posed by the coated pavement's reflection of UVA (For visible wavelengths, coated pavement has a reflectance of roughly 70 %, while uncoated pavement has a reflectivity of only 24 %. Under desert climatic conditions, the results show a net decrease in surface temperature of the coated pavement by up to 15 °C compared to the uncoated one. In the summer, for example, raising the albedo of the pavement surface from 24 % to 70 % lowered the surface temperature from 60 °C to 47 °C. This represents a 22 % decrease in pavement surface temperature. The thermal performance analysis of the cool pavement technology reveals that the pavement surface albedo enhancement will help to increase surface reflectance while lowering pavement surface temperature and offsetting CO2 emissions. Increasing the pavement surface albedo by 192 % (from 24 % to 70 %) for the total treated surface area (81,000 m2) in the educational complex will offset 28,350 tons of CO2. The application of a white coating with a high reflective value on concrete and asphalt pavements will help to extend the life of the pavement, reduce the energy consumption of buildings and the emissions of greenhouse gases, minimize the emissions of carbon dioxide caused by the enhancement of albedo (a strategy for mitigating the effects of climate change), improve parking lot visibility, and deal with the effects of heat islands.http://www.sciencedirect.com/science/article/pii/S2214509523001195Cool pavementThermal analysisSurface temperatureAlbedoCO2 emissions offsetEducational building |
| spellingShingle | Chaouki Ghenai Oussama Rejeb Timothy Sinclair Naseebah Almarzouqi Nawal Alhanaee Federico Rossi Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset Case Studies in Construction Materials Cool pavement Thermal analysis Surface temperature Albedo CO2 emissions offset Educational building |
| title | Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset |
| title_full | Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset |
| title_fullStr | Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset |
| title_full_unstemmed | Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset |
| title_short | Evaluation and thermal performance of cool pavement under desert weather conditions: Surface albedo enhancement and carbon emissions offset |
| title_sort | evaluation and thermal performance of cool pavement under desert weather conditions surface albedo enhancement and carbon emissions offset |
| topic | Cool pavement Thermal analysis Surface temperature Albedo CO2 emissions offset Educational building |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523001195 |
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