Glossary
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The terms and definitions included
in this glossary were taken from "ASHRAE Terminology of Heating, Ventilation,
Air Conditioning & Refrigeration".
To access the complete glossary please
visit ASHRAE's Bookstore.
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| air circulation |
motion of air, either natural or induced.
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| air circulation rate (air circulation ra |
volume of air circulated within a closed space
per unit time divided by the volume of the space. |
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| air cleaner |
device used to remove airborne impurities from
air. Compare filter. See also precipitator. |
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| air conditioner | assembly of equipment for the simultaneous
control of air temperature, relative humidity, purity, and motion. Compare
air-conditioning system
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| air conditioner capacity |
useful (net) available refrigerating capacity of
an air conditioner for removing sensible and latent heat from the space being
conditioned.
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| air conditioning process |
in enclosed spaces, combined treatment of the
air to control, as specified, temperature, relative humidity, velocity of
motion, and radiant heat energy level, including consideration of the need for
removal of airborne particles and contaminant gases. Some partial air conditioners
that may not accomplish all of these controls are selected for their capability
to control specific phases of air treatment.
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| air consumption | maximum rate at which air is consumed, under
steady-state conditions, by a device operating within its design limits
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| air contaminant |
unwanted airborne constituent that may reduce
acceptability of the air.
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| air cooler (cooling unit; unit cooler) | encased assembly in which the temperature of air
passing through it is reduced
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| air curtain |
controlled stream of air moving across the
height and width of an opening with sufficient velocity and volume to reduce
the infiltration or transfer of air from one side of the opening to the other;
and to inhibit insects, dust, and debris from passing through; or both.
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