Paper 16: Volume 5 No.1 June 2006 Edition
A Wind Tunnel Experimental Analysis of the Ventilation
Characteristics of a Room with Single-Sided Opening in Uniform Flow
Shinsuke Kato1 , Ryohei Kono2
, Takamasa Hasama2 , Ryozo Ooka1 , and Takeo
Takahashi1
1 Institute of Industrial Science, the
University
of
Tokyo
,
Tokyo
153-8505,
Japan
2 Department of Architecture, the
University
of
Tokyo
,
Tokyo
153-8505,
Japan
Abstract
Wind-induced cross
ventilation is one of the key technologies for saving energy while
controlling the indoor environment, and seems to be a crucial element of
any sustainable building policy. However, it is sometimes difficult to
arrange openings on two sides for cross ventilation of a room. In
buildings in built-up areas, many rooms only have openings on a single
side. Since the airflow rate for a single-sided opening is much lower than
that for two-sided openings, it is important to study how we can increase
the airflow rate for a single-sided opening using either passive or active
techniques. In this study, the characteristics of wind-induced ventilation
with single-sided openings were analysed through wind tunnel experiments.
In some experimental cases, a small object was attached to the opening in
order to increase the airflow rate. (It was assumed that this object
replicated a pivoted window whose vertical axis was in the centre of the
window.) In other experimental cases, circulation flow was artificially
induced in the room used in the experimental model in order to increase
the airflow rate. A synergistic effect from the fresh air entering through
the opening was expected with the circulation.
Key words: natural
ventilation, single-sided opening, wind tunnel experiment, flow
improvement.
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