Paper 4
Measurement of Natural Ventilation
Rate in a Japanese Residential Building
Shigeki
Nishizawa1, Takao Sawachi1, Hiromi Habara2
and Hironao Seto2
1
National Institute for Land and Infrastructure Management,
Japan
2
Building Research Institute,
Japan
Abstract
It is difficult to design
a naturally ventilated indoor environment because there is insufficient
knowledge to evaluate the effect of the natural ventilation space
quantitatively. Especially, natural ventilation rate is not yet fully
understood. In this paper, the properties of natural ventilation with
large openings are examined mainly from the results of measuring
ventilation rate. This measurement analysis shows that the resistance of
the interior doors is large and the ventilation rate is almost caused by
air exchange through a single opening when the interior doors are closed
(single-sided ventilation). By contrast a high ventilation rate is
observed when the interior doors are opened (giving cross ventilation).
This paper also identifies which factors influence the ventilation rate
through the large openings.
Key words: natural
ventilation rate, measurement, single sided, cross flow.
References
Habara, Hiromi et al:
(2007). “Reduction of Cooling Energy Consumption by Utilizing Cross
Ventilation: Experimental result by using simulated occupancy”. Proceeding
of Roomvent 2007, p1066.
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