Single-sided Natural Ventilation Driven by a Combination of Wind Pressure and Temperature Difference:

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Abstract

Natural ventilation is a commonly used principle when ventilation systems for buildings are designed. The ventilation can either be obtained by automatically controlled openings in the building envelope, or it can just be the simple action of opening a door or a window to let the fresh air in. In both situations the aim is to obtain a good indoor environment but to control the amount of air, some basic knowledge of the flow through an opening is necessary. The amount of air going through the window opening in single-sided ventilation will depend on the wind speed near the building, the temperatures inside and outside the room, the wind direction, the turbulence characteristics in the wind and the pressure variations caused by e.g. wind gusts. Finally it also depends on the size, type and location of the opening. Therefore, expressions for this prediction mainly depend on unsteady parameters, which make the prediction difficult. From earlier work, a few design expressions for single-sided ventilation already exist, but none of these include the wind direction, which here is an important parameter. Therefore several wind tunnel experiments are made in this work to find a new design expression which includes all of the above parameters.
Original languageEnglish
Title of host publicationProceedings III The 6th international Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings : Sustainable Built Environment : okt. 28-31, 2007 : Sendai International Centre, Sendai, Japan
Number of pages152
PublisherSendai International Centre, Graduate School of Engineering, Tohoku University
Publication date2007
Pages145
Publication statusPublished - 2007
EventThe International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings - Sendai, Japan
Duration: 28 Oct 200731 Oct 2007
Conference number: 6

Conference

ConferenceThe International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings
Number6
CountryJapan
CitySendai
Period28/10/200731/10/2007

Bibliographical note

Published on a CD

Keywords

  • IAQVEC
  • Single-sided natural ventilation
  • Wind tunnel
  • Measurements
  • Air change rates

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