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2. Variable-frequency drive - Wikipedia

   en.wikipedia.org/wiki/Variable-frequency_drive

   A variable-frequency drive ( VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the input electricity. Depending on its topology, it controls the ...

3. Variable speed fire pump controller - Wikipedia

   en.wikipedia.org/wiki/Variable_speed_fire_pump...

   A Variable Speed (VFD) Fire Pump Controller is a fire pump controller that is able to vary the speed of the motor depending on the demand of the fire pump, resulting in the ability to hold a constant discharge pressure. It differs from other industrial variable speed control devices because it is now considered a life safety device, and so must ...

4. Shutterfly - Wikipedia

   en.wikipedia.org/wiki/Shutterfly

   Shutterfly, LLC. is an American photography, photography products, and image sharing company, headquartered in Redwood City, California.The company is mainly known for custom photo printing services, including books featuring user-provided images, framed pictures, and other objects with custom image prints, including blankets or mobile phone cases. [2]

5. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are ...

6. Motor drive - Wikipedia

   en.wikipedia.org/wiki/Motor_drive

   Motor drive. Motor drive means a system that includes a motor. An adjustable speed motor drive means a system that includes a motor that has multiple operating speeds. A variable speed motor drive is a system that includes a motor and is continuously variable in speed. If the motor is generating electrical energy rather than using it – this ...

7. Velocity XL - Wikipedia

   en.wikipedia.org/wiki/Velocity_XL

   The standard XL has a cruising range of 875 nautical miles (1,620 km; 1,007 mi) and a 75% power cruising speed of 185 knots (213 mph; 343 km/h) air speed. [2] [4] [5] The XL is available in both fixed gear (FG) and retractable gear (RG) form and can accommodate either three or four passengers plus a pilot.