Effect of PCM cool roof system on the reduction in urban heat island phenomenon
- Authors
- Yang, Young Kwon; Kang, In Sung; Chung, Min Hee; Kim, Sumin; Park, Jin Chul
- Issue Date
- Sep-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Urban heat island (UHI); Phase change material (PCM); Cool roof system; Computational fluid dynamics (CFD)
- Citation
- BUILDING AND ENVIRONMENT, v.122, pp 411 - 421
- Pages
- 11
- Journal Title
- BUILDING AND ENVIRONMENT
- Volume
- 122
- Start Page
- 411
- End Page
- 421
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/3968
- DOI
- 10.1016/j.buildenv.2017.06.015
- ISSN
- 0360-1323
1873-684X
- Abstract
- The urban heat island (UHI) phenomenon incurs various problems for human health as fine dust and hazardous pollutants are not ventilated well in urban areas. For example, downtown areas had a higher temperature than that of suburban regions. The purpose of the present study is to derive the reduction effect on the UHI phenomenon by applying phase-change material (PCM) to building roofs as a foundational study to reduce the UHI phenomenon. In the present study, an effect of reduction in surface temperature was verified through mock-up performance test on a PCM cool roof system manufactured by combining a PCM and radiation hardened wood (wood-plastic composite), and analysis on temperature distribution simulation was conducted by utilizing the mock-up test results to verify the temperature reduction in the canopy layer and roof surface. The study result showed that a temperature was decreased by 6.8 degrees C on average when the PCM cool roof system was applied. The result of the temperature distribution simulation based on the above experimental data verified that a temperature in the urban canopy layer in the commercial zone was reduced by 7.8 degrees C in summer and 113 degrees C in winter, and that in the residential zone was decreased by 6.4 degrees C in summer and 10.5 degrees C in winter, respectively. (C) 2017 Elsevier Ltd. All rights reserved.
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