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Natural and Mechanical Ventilation
1996It is a well-known fact that hot air rises and that its place is then taken up by colder air. This natural effect occurs because the density (mass/unit volume) of the rising column of hot air is less than that of the falling column of cold air. This process in its continuously operating mode is encountered in any naturally vented enclosure and also in ...
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Review of natural ventilation models
International Journal of Ventilation, 2016ABSTRACTNatural ventilation (NV) is an important and efficient passive technique to reduce building cooling energy need and improve indoor air quality. NV design requires profound knowledge and accurate prediction of air flow and heat transfer in and around buildings that are highly dependent on varying external and internal conditions, as well as the ...
Mohamed El Mankibi +3 more
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A review of solar chimney for natural ventilation of residential and non-residential buildings
Sustainable Energy Technologies and Assessments, 2022Hussein M. Maghrabie +8 more
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Natural ventilation usability under climate change in Canada and the United States
, 2020Natural ventilation can be incorporated into buildings to decrease energy use and the associated greenhouse gas emissions of buildings. However, mechanical cooling has largely replaced natural ventilation in commercial buildings in Canada and the US ...
S. Gilani, W. O’brien
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Natural Ventilation in Residential Subdivisions
Earth & Space 2006, 2006Indoor and outdoor natural ventilation conditions of low-rise housing in small-lot residential subdivisions are strongly influenced by surrounding buildings. To account for the influence of surrounding buildings, the wind tunnel model must include sufficient surrounding buildings to yield reliable indoor and outdoor natural ventilation data.
Richard Aynsley, Bin Su
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THE FLUID MECHANICS OF NATURAL VENTILATION
Annual Review of Fluid Mechanics, 1999▪ Abstract Natural ventilation of buildings is the flow generated by temperature differences and by the wind. The governing feature of this flow is the exchange between an interior space and the external ambient. Although the wind may often appear to be the dominant driving mechanism, in many circumstances temperature variations play a controlling ...
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Computational study of natural ventilation
Journal of Wind Engineering and Industrial Aerodynamics, 1999Abstract The object of the present work is to use computational fluid dynamics (CFD) to study the ventilation properties for a room with different opening configurations. The finite volume method is used to solve the basic equations of mass and momentum conservation in the primitive form together with the two-equation turbulence model.
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Fractal nature of regional ventilation distribution
Journal of Applied Physiology, 2000High-resolution measurements of pulmonary perfusion reveal substantial spatial heterogeneity that is fractally distributed. This observation led to the hypothesis that the vascular tree is the principal determinant of regional blood flow. Recent studies using aerosol deposition show similar ventilation heterogeneity that is closely correlated with ...
Robb W. Glenny +2 more
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