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Research articles

ScienceAsia 47S (2021):ID 83-89 |doi: 10.2306/scienceasia1513-1874.2021.S017

Integration of phase change material into fiber cement roof for reduction of heat accumulation in buildings

Atthakorn Thongtha, Ketwadee Janyoosuk, Chanita Mano*

ABSTRACT:     This research focuses on the application of phase change material (PCM) combined with the fiber cement roofing sheet to reduce heat transfer through the building. The experimental study was divided into 4 conditions including the single-layer fiber cement roof (SF), the single-layer fiber cement roof installed with the PCM layer (SFPCM), the double-layer fiber cement roof (DF), and the double-layer fiber cement roof installed with the PCM layer (DF-PCM). For each condition, the fiber cement sheet was set at an incline angle of 40° with the horizontal plane. The thermal source was controlled at temperature of 60 °C, 70 °C and 80 °C for 360 min to investigate the thermal behavior and compare the heat gain through the roof. The results showed that the DF-PCM could reduce the room temperature by up to 3.1%, 3.8% and 3.7% when compared with the SF, and up to 5.6%, 5.2% and 4.8% when compared with the DF at the controlled heat source temperature of approximately 60 °C, 70 °C and 80 °C, respectively. It indicated that the use of PCM integrated into the fiber cement roofing sheet could reduce the heat transfer and interior room temperature, leading to energy saving.

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a Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000 Thailand

* Corresponding author, E-mail:

Received 10 Nov 2020, Accepted 30 May 2021