Natural ventilation approach in designing urban tropical house

Abd. Wahab, Izudinshah and Ismail, Lokman Hakim Natural ventilation approach in designing urban tropical house. In: The International Conference on Civil and Environmental Engineering Sustainability (IConCEES 2011), 3-5 April 2012, Johor Bahru, Malaysia.

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Abstract

Building ventilation is necessary in providing acceptable indoor air quality (IAQ). It is a process of supplying fresh air and removing or diluting indoor pollution concentration. With an increasing awareness of energy saving lately, people are trying to rely more on natural ventilation to give better indoor air quality and thermal comfort. However, due to not much of air movement via wind driven in high density urban area, stack effect is seems to be more reliable than cross ventilation. Stack ventilating phenomenon is generated by the differences of inside and outside air pressure to create air flow through its upper most and lowest building openings. Thus, stack effect ventilation is highly depending on the size of the openings which will influence the air pressure inside the building. Controlling the neutral plane level in the house by the sizes of the openings is essential in driving the air in and out. Besides that, the height between the upper most and lowest openings may also contribute to the amount of air driven through the process. While in tropical area, maintaining the indoor temperature lower than the outdoor temperature is also important to keep the pressure difference for wind flow besides providing indoor thermal comfort to the occupants.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:ventilation; stack effect
Subjects:T Technology > TH Building construction > TH7005-7699 Heating and ventilation. Air conditioning
ID Code:2538
Deposited By:Normajihan Abd. Rahman
Deposited On:06 Nov 2012 14:08
Last Modified:06 Nov 2012 14:08

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