 Ventilation good and very bad Ventilation is air circulation of air, typically between a room, a tunnel, etc., and the air outside. When people or animals are present, ventilation is especially necessary to remove the carbon dioxide produced and renew the oxygen used up. It is needed additionally if pollution takes place, e.g. by smoking, painting, etc. Ventilation may also refer to a closed system, such as an airliner, where "stale" air is filtered, mixed with oxygen, temperature-adjusted, and recirculated back to the cabin. Its belived that bad ventilation can cause allergy, head ache, throat problems. Image File history File links Download high resolution version (1024x672, 74 KB) Author Rafal Konkolewski 2005, relased under . File links The following pages link to this file: Ventilation ...
Image File history File links Download high resolution version (1024x672, 74 KB) Author Rafal Konkolewski 2005, relased under . File links The following pages link to this file: Ventilation ...
Jump to: navigation, search Air is a name for the mixture of gases present in the Earths atmosphere. ...
Jump to: navigation, search A disused railway tunnel now converted to pedestrian and bicycle use, near Houyet, Belgium A tunnel is an underground passage. ...
Jump to: navigation, search Carbon dioxide is an atmospheric gas composed of one carbon and two oxygen atoms. ...
Jump to: navigation, search General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ...
For information about smoking tobacco, see tobacco smoking. ...
Jump to: navigation, search The Mona Lisa is perhaps the best-known artistic painting in the Western world. ...
If there is something burning (a fireplace, gas heater, candle, oil lamp, etc.) more oxygen is replaced by carbon dioxide (and possibly other poisonous gases and smoke) and more ventilation is needed. If there is a chimney then the additional need of ventilation just refers to replacing the warmer air that leaves by convection through the chimney with fresh air. Jump to: navigation, search Combustion or burning is an exothermic reaction between a substance (the fuel) and a gas (the oxidizer), usually O2, to release heat. ...
A fireplace with a burning fire. ...
A gas heater is a device used to heat a room by burning gas. ...
Jump to: navigation, search A lit candle. ...
Antique bronze oil lamp with Christian symbol (replica) Antique Greek oil lamp (replica) An oil lamp is a device used for lighting or for preserving a flame that is fueled by animal, vegetable or mineral oil. ...
This article is about the dangerous substance. ...
A gas is one of the phases of matter. ...
Smoke from a wildfire Smoke is a suspension in air (aerosol) of small particles resulting from incomplete combustion of a fuel. ...
Jump to: navigation, search A chimney is a system for venting hot gases and smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. ...
Jump to: navigation, search Convection is the transfer of heat by the motion of or within a fluid. ...
Ventilation in a structure is also needed for removing water vapor, produced by breathing, burning, and cooking, and for removing smells, e.g. from a toilet or kitchen. If water vapor is permitted to accumulate, it may damage the insulation or interior finish. A dehumidifier may also be appropriate for removing moisture in the air. Water vapor condensing over a cup of hot tea Water vapor or water vapour, also aqueous vapour, is the gas phase of water. ...
For the play Breath by Samuel Beckett, see Breath (play). ...
Cooking is the act of preparing food for consumption. ...
Jump to: navigation, search Flush toilet A toilet is a plumbing fixture and a disposal system primarily intended for the disposal of the bodily wastes urine and feces. ...
Jump to: navigation, search A kitchen is a room used for food preparation. ...
Jump to: navigation, search This article needs to be cleaned up to conform to a higher standard of quality. ...
A dehumidifier is a household appliance that reduces the level of humidity in a room. ...
In firefighting, ventilation refers to the tactic of creating a draft with an opening above or opposite the entry point so that heat and smoke will be released, permitting the firefighters to find and attack the fire. Mechanical fans can be used for such ventilation, as are existing openings such as windows, or skylights, scuttle hatches on the roof. If there is no ready-made hole, then the firefighters use their tools to make one, including saws for cutting a large hole in the roof. If a large fire is not properly ventilated, not only will it be much harder to fight, but it could also build up enough poorly burned smoke to create a smoke explosion, or enough heat to create a flashover. Some modern construction of high-rise building incorporates automatic ventilation equipment to produce a positive pressure in smoke-proof stairwells. Jump to: navigation, search Firefighter in full turn out gear with a pickhead axe. ...
A flashover is the simultaneous ignition of all combustible material in an enclosed area. ...
Positive pressure is a pressure within a system that is greater than the environment that surrounds that system. ...
See also Sick building syndrome (SBS) is a combination of ailments (a syndrome) associated with an individuals place of work (typically, but not always, an office building), though there have also been instances of SBS in residential buildings. ...
Jump to: navigation, search Gas exchange or respiration takes place at a respiratory surface - a boundary between the external environment and the interior of the body. ...
Jump to: navigation, search Software being used to design HVAC systems HVAC (pronounced either H-V-A-C or, occasionally, H-VAK) is an initialism/acronym that stands for heating, ventilation and air-conditioning. This is sometimes referred to as climate control. ...
Note: This list is incomplete. ...
External links - Directory of Ventilation Contractors
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