Enhancement of natural ventilation in high-rise residential buildings using stack system

Rajagopalan, Priyadarsini, Cheong, Wai and Wong, N. 2004, Enhancement of natural ventilation in high-rise residential buildings using stack system, Energy and buildings, vol. 36, no. 1, pp. 61-71, doi: 10.1016/S0378-7788(03)00076-8.

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Title Enhancement of natural ventilation in high-rise residential buildings using stack system
Author(s) Rajagopalan, Priyadarsini
Cheong, Wai
Wong, N.
Journal name Energy and buildings
Volume number 36
Issue number 1
Start page 61
End page 71
Publisher Elsevier SA
Place of publication Lausanne, Switzerland
Publication date 2004-01
ISSN 0378-7788
Keyword(s) natural ventilation
wind tunnel
stack effect
passive stack
active stack
Summary This paper describes the feasibility study on the application of passive and active stack systems to enhance natural ventilation in public housing in Singapore. About 86% of the population is staying in high-rise public housing, known as Housing and Development Board (HDB) flats, which is designed for natural ventilation. The primary objective of this work is to assess the status of natural ventilation in a typical four-room HDB flat using scaled model in the wind tunnel, and to develop an effective passive or active stack system to enhance natural ventilation in the flat. Four numbers of stacks with different sizes were tested at two locations in the flat. The study shows that the passive stack, incorporating the principle of airflow due to buoyancy, does not enhance air velocity in the flat. However, the active stack which operates based on the suction effect induced by a fan fixed at the top of the stack leads to substantial increase in the air velocity at the room and thus meeting the human’s thermal comfort condition. It was noted that the velocities increase along with the increase in the stack size.
Language eng
DOI 10.1016/S0378-7788(03)00076-8
Field of Research 120202 Building Science and Techniques
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2003, Elsevier B.V
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022480

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