The calculated operating conditions for a fan excluding tolerances.
Related Terms |
BLAST FREEZER
Low-temperature evaporator which uses a fan to force air rapidly over the evaporator surface.
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EVAPORATOR FAN
Fan which increases airflow over the heat exchange surface of evaporators.
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UNITARY SYSTEM
A room unit which performs part or all of the air conditioning functions. It may or may not be used with a central fan system.
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FAN PERFORMANCE
A measure of fan operation in terms of volume, total pressures, static pressures, speed, power input, and mechanical and static efficiency, at a stated air density.
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FORCED-DRAFT FAN
A fan supplying air under pressure to the fuel burning equipment.
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INDUCED DRAFT FAN
A fan exhausting hot gases from heat absorbing equipment.
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FAN
A machine consisting of a rotor and housing for moving air or gases at relatively low-pressure differentials.
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VANE CONTROL
A set of movable vanes in the inlet of a fan to provide regulation of airflow.
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VOLUME OF AIR
The number of cubic feet of air per minute expressed at fan outlet conditions.
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POSTPURGE
A period after the fuel valves close during which the burner motor or fan continues to run, to supply air to the combustion chamber.
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