A set of movable vanes in the inlet of a fan to provide regulation of airflow.
Related Terms |
HORIZON SYSTEM OF COORDINATES
A set of celestial coordinates based on the celestial horizon as the primary great circle; usually altitude and azimuth or azimuth angle.
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AUXILIARY CONTACTS
A set of contacts that perform a secondary function, usually in relation to the operation of a set of primary contacts.
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FORESAIL
The lowest sail set on the foremast of square-rigged ship
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BLAST FREEZER
Low-temperature evaporator which uses a fan to force air rapidly over the evaporator surface.
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NET FAN REQUIREMENTS
The calculated operating conditions for a fan excluding tolerances.
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DISPLACEMENT PUMP
Pumps in which energy is added to the water periodically and the water is contained in a set volume.
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DEMAND CONTROL
A device which controls the kW demand level by shedding loads when the kW demand exceeds a predetermined set point.
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SUCTION SIDE
Low-pressure side of the system extending from the refrigerant control through the evaporator to the inlet valve of the compressor.
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DRIFT
Term used to describe the difference between the set point and the actual operating or control point.
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EVAPORATOR FAN
Fan which increases airflow over the heat exchange surface of evaporators.
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