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  2. The 9 Best Cooling Fans to Help You Survive the Summer Heat Wave

    www.aol.com/9-best-cooling-fans-help-100000841.html

    Warmer weather demands more than just swimsuits and sunscreen––it calls for the ultimate summer essential: air conditioning. And let's face it, there's nothing like returning home to the ...

  3. 15 products to help you stay cool in the extreme heat: 'A ...

    www.aol.com/lifestyle/products-to-help-you-stay...

    The Jisulife Handheld Mini Fan gives you that blast of cool air that you need — like when you get back in your car after shopping and it's turned into a roaster. This handy number also boasts 21 ...

  4. Editors Say These Neck Fans Kept Them Cool During the Hottest ...

    www.aol.com/8-best-wearable-air-conditioners...

    Portable Neck Fan. Civpower’s Portable Neck Fan is one of the best-reviewed and best-selling models on Amazon. The simple design features 78 air outlets and three selectable fan settings so you ...

  5. Centrifugal fan - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_fan

    Centrifugal fans displace air radially, changing the direction (typically by 90°) of the airflow. They are sturdy, quiet, reliable, and capable of operating over a wide range of conditions. [3] Centrifugal fans are, like axial fans, constant-volume devices, meaning that, at a constant fan speed, a centrifugal fan moves a relatively constant ...

  6. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Air-side economizers also use outside air to condition spaces, but do so using fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate. An important component of natural ventilation is air change rate or air changes per hour : the hourly rate of ventilation divided by the volume of the space.

  7. Fan (machine) - Wikipedia

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

    Cross-flow fans give airflow along the entire width of the fan; however, they are noisier than ordinary centrifugal fans. Cross-flow fans are often used in ductless air conditioners, air doors, in some types of laptop coolers, in automobile ventilation systems, and for cooling in medium-sized equipment such as photocopiers.