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 °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 °C in summer and 11.3 °C in winter, and that in the residential zone was decreased by 6.4 °C in summer and 10.5 °C in winter, respectively.
All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Civil and Structural Engineering
- Geography, Planning and Development
- Building and Construction