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HVAC stands for heating, ventilation, and air conditioning, which is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Learn about the history, functions, and types of HVAC systems, as well as their applications and benefits.
Learn the meaning of common HVAC (heating, ventilation, and air conditioning) terms and acronyms, such as ACH, BTU, CAV, chiller, coil, condenser, and more. This glossary is a useful resource for HVAC professionals and enthusiasts.
A centrifugal fan is a device that moves air or gases in a direction at an angle to the incoming fluid. It is also called a blower, squirrel-cage fan, or biscuit blower. Learn about its history, construction, drive mechanisms, and variations.
Learn about the different types of AC motors, such as induction, synchronous and brushless, and how they operate on alternating current. Find out the history of AC motor invention and the factors that affect its speed and torque.
Allis vertical blowing engine. A blowing engine is a large stationary steam engine or internal combustion engine directly coupled to air pumping cylinders.They deliver a very large quantity of air at a pressure lower than an air compressor, but greater than a centrifugal fan.
There are several means of controlling the flow rate of a fan, e.g., temporarily reducing the air or gas flow rate; these can be applied to both centrifugal and axial fans. Speed Variation - All of the fan types described above can be used in conjunction with a variable speed driver.
A fan coil unit (FCU) is a device that combines a heat exchanger and a fan to condition air in HVAC systems. Learn about the different configurations, applications, and control methods of FCUs, as well as their advantages and disadvantages.
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