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A High-volume low-speed fan. A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."
Part 3 of the Fan Application Manual, helps to identify and correct problems with the performance and operation of the air moving system after fan installation. AMCA Publication 203 - Field Performance Measurement of Fan Systems. Part 4 of the Fan Application Manual, reviews the methods of making field measurements for calculating the actual ...
Cooling fans - (also referred to as "cooling tower fans") - These are axial fans, typically with large diameters, for low pressures and large volumes of airflow. Applications are in wet mechanical cooling towers, air-cooled steam condensers, air-cooled heat exchangers, radiators, or similar air-cooled applications.
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Variable air volume (VAV) is a type of heating, ventilating, and/or air-conditioning system. Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant or varying temperature.
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Watlow Electric Manufacturing Co. is a family-owned company that designs and manufactures industrial electric heaters, sensors, and controllers. Founded in 1922, it has nine factories and three technology centers in the United States, Mexico, Europe and Asia, and has sales offices in 16 countries.