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A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements

The main contributing factor of the urban heat island (UHI) effect is caused by daytime heating. Traditional pavements in cities aggravate the UHI effect due to their heat storage and volumetric heat capacity. In order to alleviate UHI, this study aims to understand the heating and dissipating proce...

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Autores principales: Yang, Ching-Che, Siao, Jun-Han, Yeh, Wen-Cheng, Wang, Yu-Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235430/
https://www.ncbi.nlm.nih.gov/pubmed/34205681
http://dx.doi.org/10.3390/ma14123431
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author Yang, Ching-Che
Siao, Jun-Han
Yeh, Wen-Cheng
Wang, Yu-Min
author_facet Yang, Ching-Che
Siao, Jun-Han
Yeh, Wen-Cheng
Wang, Yu-Min
author_sort Yang, Ching-Che
collection PubMed
description The main contributing factor of the urban heat island (UHI) effect is caused by daytime heating. Traditional pavements in cities aggravate the UHI effect due to their heat storage and volumetric heat capacity. In order to alleviate UHI, this study aims to understand the heating and dissipating process of different types of permeable road pavements. The Ke Da Road in Pingtung County of Taiwan has a permeable pavement materials experiment zone with two different section configurations which were named as section I and section II for semi-permeable pavement and fully permeable pavement, respectively. The temperature sensors were installed during construction at the depths of the surface course (0 cm and 5 cm), base course (30 cm and 55 cm) and subgrade (70 cm) to monitor the temperature variations in the permeable road pavements. Hourly temperature and weather station data in January and June 2017 were collected for analysis. Based on these collected data, heat storage and dissipation efficiencies with respect to depth have been modelled by using multi regression for the two studied pavement types. It is found that the fully permeable pavement has higher heat storage and heat dissipation efficiencies than semi-permeable pavement in winter and summer monitoring period. By observing the regressed model, it is found that the slope of the model lines are almost flat after the depth of 30 cm. Thus, from the view point of UHI, one can conclude that the reasonable design depth of permeable road pavement could be 30 cm.
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spelling pubmed-82354302021-06-27 A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements Yang, Ching-Che Siao, Jun-Han Yeh, Wen-Cheng Wang, Yu-Min Materials (Basel) Article The main contributing factor of the urban heat island (UHI) effect is caused by daytime heating. Traditional pavements in cities aggravate the UHI effect due to their heat storage and volumetric heat capacity. In order to alleviate UHI, this study aims to understand the heating and dissipating process of different types of permeable road pavements. The Ke Da Road in Pingtung County of Taiwan has a permeable pavement materials experiment zone with two different section configurations which were named as section I and section II for semi-permeable pavement and fully permeable pavement, respectively. The temperature sensors were installed during construction at the depths of the surface course (0 cm and 5 cm), base course (30 cm and 55 cm) and subgrade (70 cm) to monitor the temperature variations in the permeable road pavements. Hourly temperature and weather station data in January and June 2017 were collected for analysis. Based on these collected data, heat storage and dissipation efficiencies with respect to depth have been modelled by using multi regression for the two studied pavement types. It is found that the fully permeable pavement has higher heat storage and heat dissipation efficiencies than semi-permeable pavement in winter and summer monitoring period. By observing the regressed model, it is found that the slope of the model lines are almost flat after the depth of 30 cm. Thus, from the view point of UHI, one can conclude that the reasonable design depth of permeable road pavement could be 30 cm. MDPI 2021-06-21 /pmc/articles/PMC8235430/ /pubmed/34205681 http://dx.doi.org/10.3390/ma14123431 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Ching-Che
Siao, Jun-Han
Yeh, Wen-Cheng
Wang, Yu-Min
A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title_full A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title_fullStr A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title_full_unstemmed A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title_short A Study on Heat Storage and Dissipation Efficiency at Permeable Road Pavements
title_sort study on heat storage and dissipation efficiency at permeable road pavements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235430/
https://www.ncbi.nlm.nih.gov/pubmed/34205681
http://dx.doi.org/10.3390/ma14123431
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