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2. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   The motor is either hidden in the fan's center hub or extends behind it. For big industrial fans, three-phase asynchronous motors are commonly used, may be placed near the fan, and drive it through a belt and pulleys. Smaller fans are often powered by shaded pole AC motors, or brushed or brushless DC motors. AC-powered fans usually use mains ...

3. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   An air conditioner designed for an occupied space will typically achieve a 30% to 60% relative humidity in the occupied space. [51] Most modern air-conditioning systems feature a dehumidification cycle during which the compressor runs. At the same time, the fan is slowed to reduce the evaporator temperature and condense more water.

4. Electric motor - Wikipedia

   en.wikipedia.org/wiki/Electric_motor

   An industrial electric motor . An electric motor is a machine that converts electrical energy into mechanical energy.Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft.

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6. TEFC motor - Wikipedia

   en.wikipedia.org/wiki/TEFC_motor

   An external fan blows outside air over the frame of the motor to cool it. This motor is arguably the most commonly used motor in ordinary industrial environments. TEFC enclosed motors usually cost more than open motors, but offer increased protection against weather, dirt, and moisture. TEFC motors are constructed with a small fan on the rear ...

7. Brushless DC electric motor - Wikipedia

   en.wikipedia.org/wiki/Brushless_DC_electric_motor

   The most significant reason to switch to a brushless motor is a reduction in power required to operate them versus a typical AC motor. [17] In addition to the brushless motor's higher efficiency, HVAC systems, especially those featuring variable-speed or load modulation, use brushless motors to give the built-in microprocessor continuous ...

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

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