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2. Specific fan power - Wikipedia

   en.wikipedia.org/wiki/Specific_fan_power

   Specific Fan Power (SFP) is a parameter that quantifies the energy-efficiency of fan air movement systems.It is a measure of the electric power that is needed to drive a fan (or collection of fans), relative to the amount of air that is circulated through the fan(s).

3. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel).

4. Affinity laws - Wikipedia

   en.wikipedia.org/wiki/Affinity_laws

   ˙ is the shaft power (units of power, or energy/time). [3] These laws assume that the pump/fan efficiency remains constant i.e. =, which is rarely exactly true, but can be a good approximation when used over appropriate frequency or diameter ranges. The exact relationship between speed, diameter, and efficiency depends on the particulars of ...

5. Power-to-weight ratio - Wikipedia

   en.wikipedia.org/wiki/Power-to-weight_ratio

   Power-to-weight ratio (PWR, also called specific power, or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power source.

6. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   The fan is designed to produce a pressure difference, and hence force, to cause a flow through the fan. Factors which determine the performance of the fan include the number and shape of the blades. Fans have many applications including in wind tunnels and cooling towers. Design parameters include power, flow rate, pressure rise and efficiency. [1]

7. AOL Mail

   mail.aol.com/d?reason=invalid_cred

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Turbofan - Wikipedia

   en.wikipedia.org/wiki/Turbofan

   Changes must also be made to the fan to absorb the extra core power. On a civil engine, jet noise considerations mean that any significant increase in take-off thrust must be accompanied by a corresponding increase in fan mass flow (to maintain a T/O specific thrust of about 30 lbf/lb/s).

9. The Affordable Egg Substitute That's Actually Better Than Eggs

   www.aol.com/affordable-egg-substitute-thats...

   1/4 cup whole milk Greek yogurt . Appearance: Pleasingly crinkled top and deep mahogany color. Texture: Crustier edges with fudgy interior. Taste: Similar to the control, the chocolate flavor ...