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Natural ventilation approached on circular courtyard building in hot humid climate

Zakaria, Mohd Azuan and Ismail, Lokman Hakim Natural ventilation approached on circular courtyard building in hot humid climate. In: The International Conference on Civil and Environmental Engineering Sustainability (IConCEES 2011), 3-5 April 2012, Johor Bahru, Malaysia.

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Abstract

One of the building designs that can provide better thermal condition using natural ventilation and better shading performances is courtyard type building. However, the effectiveness of the natural ventilation and shading performance is determined by prevailing outdoor conditions in the microclimate and the building design itself. This study investigates the high rise circular courtyard building performances in the aspect of thermal comfort through naturally ventilated approach. This study was conducted at UTHM library located at Parit Raja, Batu Pahat, Johor, which has circular courtyard geometry design with the height of 5 storeys. An objective measurement has been done on several room conditions by using MetOne E-Sample station, portable 4 in 1 meter kit and Fluke infrared thermometer to obtain the parameters of air temperature, relative humidity, wind speed and wall, and floor temperature surfaces. After conducting the measurement for each condition, Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfaction (PPD) have been calculated by using ASHRAE Thermal Comfort Program V1.0. The result shows that courtyard can provide lower air temperature condition compared to the outside ambient. However, in term of applying natural ventilation strategies, only night time condition achieved the comfort zone of ISO 7730. The worst room condition was by using combination of natural ventilation during day but not at night.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: natural ventilation; thermal comfort; hot humid climate; courtyard; building form
Subjects: T Technology > TH Building construction > TH7005-7699 Heating and ventilation. Air conditioning
Depositing User: Normajihan Abd. Rahman
Date Deposited: 06 Nov 2012 06:09
Last Modified: 06 Nov 2012 06:09
URI: http://eprints.uthm.edu.my/id/eprint/2539
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