Opening design and position effect on building natural stack effect and cross ventilation

Abd. Wahab, Izudinshah and Ismail, Lokman Hakim and Abd Kadir, Aslila (2016) Opening design and position effect on building natural stack effect and cross ventilation. International Journal of Engineering and Technical Research (IJETR), 5 (1). ISSN 24544698

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Abstract

Stack effect ventilation in building occurs due to the movement of the cold and warm air into and out of the building driven by buoyancy. Buoyancy force can be increased by increasing the thermal difference and the height of the shaft where stack effect ventilation may happens. Thermal different is less controllable, leaving the shaft and openings design of a building as the best option in exploring the potential of stack effect ventilation. This paper presents a finding of a study on ventilation openings positioning effect towards stack effect neutral plane. A house in Batu Pahat, Johore of Malaysia called Kebun Angin was chose as the subject based on its internal space layout that consists of a central atrium acting as the shaft. Using neutral plane calculation, the level of the plane was determine to understand the character of the ventilation flow theoretically. While using CFD simulation, equal size of indoor and outdoor openings was found to be the best design in optimizing natural ventilation in the building. However, the presence of several windows between inlet and outlet was disturbed the air movement in atrium throat, thus reducing the potential of stack effect.

Item Type:Article
Uncontrolled Keywords:Natural ventilation; stack effect; openings; neutral plane
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA630-695 Structural engineering (General)
Divisions:Faculty of Civil and Environmental Engineering > Department of Construction Engineering and Architecture
ID Code:8526
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:21 Jun 2017 11:44
Last Modified:21 Jun 2017 11:44

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