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Natural Ventilation of Parral Greenhouses
Biosystems Engineering, 2004Abstract A study was carried out at the Experimental Station Las Palmerillas of Cajamar to characterise the natural ventilation of the parral greenhouse. An 882 m2, five span, polyethylene film covered parral greenhouse was fitted with either a rolling or a flap ventilator attached to one side of each ridge and rolling ventilators in two 38 m ...
B.J. Bailey +3 more
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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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Soundproof Window - Natural Ventilation
INTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2021Expansion of brasilians cities worsen noise pollution in these places, forcing people to maintain their doors and windows closed. Domestic environment enclosing lead to necessity of air conditioning system, however the frequent use of the equipment may cause many health problems, such as respiratory difficulties and spread of diseases , not to mention
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Natural Ventilation in a Model Room
Journal of Thermal Science and Engineering Applications, 2012Natural ventilation of a model room with water as the fluid medium is studied. It is insulated by air gaps on the four sides and at the top. A constant heat flux has been maintained on the bottom surface of the room. This room is surrounded by a large exterior tank containing water. There are three openings each on two opposing sides of the model room.
Jaywant H. Arakeri +2 more
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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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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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Natural Ventilation and Energy Consumption
1980The energy consumption of dwellings will be partly due to heat transmission through the external walls, roof and floor and partly due to infiltration of outside air. The infiltration of dwellings depends on wind velocity, wind direction, temperature difference between inside and outside, the form of the building and its situation, the openings in the ...
B. Knoll, W. F. De Gids, J.C. Phaff
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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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Strategies for natural ventilation of residential
2011 International Conference on Electric Information and Control Engineering, 2011This paper refers to the meaning and purpose of natural ventilation, and the ways of improvement of the effect of natural ventilation in the design stages of construction. Solutions to several trouble spots on natural ventilation are discussed.
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Poor ventilation worsens short‐range airborne transmission of respiratory infection
Indoor Air, 2022Wei Jia, Yuguo Li, Pan Cheng
exaly