The routine of operation to secure the best and most efficient results with an attic fan is important. Atypical operating routine might require that, in…
Category: Ventilation Requirements
Because of the low static pressures involved (usually less than 1/8 in. of water), disk or propeller fans are generally used instead of the blower…
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.…
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…
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…
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…
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…
The volume of air required is determined by the size of the space to be ventilated and the number of times per hour that the…
Various types of fans are used in air-conditioning applications and are classified as propeller, tube-axial, vane-axial, and centrifugal. The propeller and tube-axial fans consist of…
In general, it can be said that duct sizes and the depth of a duct in particular are affected by the available space in the…