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2. Lennox International - Wikipedia

   en.wikipedia.org/wiki/Lennox_International

   Lennox International Inc., headquartered in Richardson, Texas and organized in Delaware, is a provider of climate control products for the heating, ventilation, and air conditioning (HVAC) and refrigeration markets. [1]

3. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   Figure 1: Components of a centrifugal fan An external motor belt driven inline centrifugal fan discharging inline to the exterior of a building through a duct. Unlike non-inline/non-concentric impeller casing design with a cutoff blade above, the concentrically symetric cylinder casing and impeller geometry of inline type redirects the outflow around so that it is parallel to the inflow of gases.

4. Dave Lennox - Wikipedia

   en.wikipedia.org/wiki/Dave_Lennox

   David Lennox (April 15, 1855 – February 15, 1947) was an American inventor and businessman. A furnace manufacturing business he founded in 1895 in Marshalltown, Iowa evolved into what is today known as Lennox International, a global corporation specializing in air conditioning, heating, and commercial refrigeration.

5. Induction motor - Wikipedia

   en.wikipedia.org/wiki/Induction_motor

   An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor that produces torque is obtained by electromagnetic induction from the magnetic field of the stator winding. [1] An induction motor therefore needs no electrical connections to the rotor.

6. Computer fan control - Wikipedia

   en.wikipedia.org/wiki/Computer_fan_control

   Control input – a pulse-width modulation (PWM) input signal, used when the cooling fan assembly has an internal motor driver circuit. Fan assemblies with this control input provide the ability to adjust the rotational speed of the fan without changing the input voltage delivered to the cooling fan assembly.

7. What are the BRIC nations? Why did Donald Trump ... - AOL

   www.aol.com/bric-nations-why-did-donald...

   Donald Trump continues to threaten tariffs against foreign nations, this time toward a bloc of nine countries if they try to undermine the dollar's global dominance.