Tag Archives for HVAC Fan

HVAC Fan Operation

Fans may be centrally located in an attic or other suitable space (such as a hallway), and arranged to move air proportionately from several rooms. A local unit may be installed in a window to provide comfort cooling for one … Continue reading

04. January 2011 by admin
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HVAC Fan Applications

The numerous applications of fans in the field of air-conditioning and ventilation are well known, particularly to engineers and air-conditioning repair and maintenance personnel. The various fan applications are as follows: ? Exhaust fans ? Circulating fans ? Cooling-tower fans … Continue reading

04. January 2011 by admin
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HVAC Fan Selection

Most often, the service determines the type of fan to use. When operation occurs with little or no resistance, and particularly when no duct system is required, the propeller fan is commonly used because of its simplicity and economy in … Continue reading

04. January 2011 by admin
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HVAC Fan Drive Methods

Whenever possible, the fan wheel should be directly connected to the motor shaft. This can usually be accomplished with small centrifugal fans and with propeller fans up to about 60 in. in diameter. The deflection and the critical speed of … Continue reading

04. January 2011 by admin
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HVAC Fan or Blower Horsepower Requirements

The horsepower required for any fan or blower varies directly as the cube of the speed, provided that the area of the discharge orifice remains unchanged. The horsepower requirements of a centrifugal fan generally decrease with a decrease in the … Continue reading

04. January 2011 by admin
Categories: Ventilation Requirements | Tags: | Leave a comment