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Cooling system of zinc roofed house by using circulated water

Ab Rahman, Rosdi and Kaamin, Masiri and Suwandi, Amir Khan and Kesot, Mohd Jahaya and Mohd Zan, Norah (2014) Cooling system of zinc roofed house by using circulated water. Advanced Materials Research, 935. pp. 84-87. ISSN 1022-6680


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Most traditional village houses uses corrugated zinc roofing due to economic reason. Thermal discomfort will result as zinc is a highly heat absorbing material. The space under the zinc covering will experience significant temperature increase proportional to the amount of supplied heat from sunlight, and this will further be aggravated if the ventilation is poor. The purpose of this study is to determine an alternative method to lower the temperature inside a zinc covered house. The proposed method is by splashing water throughout the area of the zinc roofing, where heat exchange process will occur upon contact. The process will dissipate heat from the zinc but will increase the water temperature. Heated water will then free fall by gravity into a tank through perforated tube with very fine aperture, as water droplet. By the same heat transfer process, ambient air will lower the water temperature, which will be recirculation back to the roof. To facilitate higher rate of water cooling, fan will be provided. The tests show the system was able to lower the temperature of the zinc covered house, and can reduce cost of cooling, thus suitable for low income rural population in Malaysia.

Item Type: Article
Uncontrolled Keywords: air flow; cooling systems; heat transfer; thermal comfort; water circulation
Subjects: T Technology > TH Building construction > TH7005-7699 Heating and ventilation. Air conditioning
Divisions: Centre of Diploma Studies > Department of Mechanical Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 25 Jan 2015 07:38
Last Modified: 25 Jan 2015 07:38
URI: http://eprints.uthm.edu.my/id/eprint/6283
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