Thermal shielding of multilayer walls with phase change materials under different transient boundary conditions |
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| Authors: | François Mathieu-Potvin Louis Gosselin |
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| Affiliation: | 1. Department of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, China;2. Department of Architecture and Environment, Sichuan University, Chengdu, China;1. The Research Centre on Zero Emission Buildings, Faculty of Architecture and Fine Arts, Norwegian University of Science and Technology, Alfred Getz vei 3, 7491 Trondheim, Norway;2. TEBE Research Group, Department of Energy – DENERG, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;1. Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea;2. Physics and Material Science Unit, University of Luxembourg, Luxembourg;3. R&D Center, A-Tech System Ltd., 18 Annam-ro 369 Beon-gil, Bupyeong-gu, Incheon 21312, Republic of Korea;1. School of Engineering, Ocean University of China, Tsingdao 266100, China;2. School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, NSW 2522, Australia;3. Department of Automotive and Marine Engineering Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait;4. Civil Engineering Department, Faculty of Engineering, Soran University, Soran, Kurdistan Region, Iraq;5. Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;6. Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah, Iran;7. Laboratory of Magnetism and Magnetic Materials, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam;8. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam;1. School of Architecture and Civil Engineering, Northeast Petroleum University, Fazhan Lu Street, Daqing 163318, China;2. Engineering Faculty, Mechanical Engineering Department, Kocaeli University, Umuttepe Campus, 41380 Kocaeli, Turkey;3. School of Automobile Engineering, Harbin Institute of Technology at Weihai, 2, West Wenhua Road, Weihai 264209, China |
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| Abstract: | A numerical model is presented to determine the thermal shielding performance of an exterior wall (e.g., building envelope) containing layers of PCMs. The model is exploited to perform a parametric study to assess the influence of the position and melting temperature of one PCM layer. Results showed that benefits are to be expected when the interior and exterior temperatures are close. Then, the wall composition has been optimized with a genetic algorithm based on a yearly analysis with the possibility of including several PCM layers. Idealized weather conditions and measured weather conditions (including solar radiation) have been considered. Results showed that for Québec City, optimal south-facing wall includes one PCM layer when real weather data are considered. Its effect is to shield the heat transfer in the summer. This paper provides a fundamental understanding of multilayer walls with PCMs. |
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