Cooling energy evaluation for high-rise residential buildings in Hong Kong |
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| Affiliation: | 1. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China;2. Faculty of Mechanical Engineering at Kragujevac, University at Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro;1. Faculty of Engineering, Technology & Built Environment, Mechanical Engineering Department, UCSI University, Cheras, Malaysia;2. Faculty of Engineering, Department of Mechanical Engineering, University Putra Malaysia, Serdang, Malaysia;3. FABE, Limkokwing University of Creative Technology, Cyperjaya 63000, Malaysia;1. Faculty of Architecture, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang, Lien Chieu, Da Nang, Viet Nam;2. School of Architecture, The University of Hawaiʻi at Mānoa, 2500 Campus Rd, Honolulu, HI, 96822, USA;3. Faculty of Architecture, National University of Civil Engineering, 55, Giai Phong, Hai Ba Trung, Ha Noi, Viet Nam |
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| Abstract: | Based on the design of a typical high-rise public housing block in Hong Kong, the dependence of space cooling loads of residential flats on the constructions of external walls and partitions, and the location of thermal insulation layer in the walls and partitions, was studied by detailed simulation. The results show that insulating the envelope and the partitions would be effective in reducing the yearly space cooling load, by up to 38%, but could either increase (by up to 19%) or reduce (by up to 16%) the peak cooling demand, depending on the number and positions of insulation layers in the walls. Reducing the thermal capacity of the envelope and partitions (e.g. by reducing their thickness) would lead to large increases in the peak cooling demand, by more than 60% in the extreme case. |
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