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2. Thermal destratification - Wikipedia

   en.wikipedia.org/wiki/Thermal_destratification

   Other variables that influence the level of thermal stratification include heat generated by people and processes present in the building, insulation of the space from outside weather conditions, solar gain, specification of the HVAC system, location of supply and return ducts, and vertical air movement inside the space, usually supplied by ...

3. Air knife - Wikipedia

   en.wikipedia.org/wiki/Air_knife

   An air knife is a tool used to blow off liquid or debris from products as they travel on conveyors. Air knives are normally used in manufacturing or as the first step in a recursive recycling process to separate lighter or smaller particles from other components for use in later or subsequent steps, post manufacturing parts drying and conveyor cleaning, part of component cleaning.

4. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   Pressure blowers – These are high-pressure, low-volume blowers used in combustion air applications in furnaces or to provide “blow-off” air for clearing and/or drying applications. Surgeless blowers – These high-pressure, low-volume blowers have a reduced tendency for “surging” (periodic variation of flow rate) even at severely ...

5. Dust collector - Wikipedia

   en.wikipedia.org/wiki/Dust_collector

   Although they are noisier than radial-blade fans, backward-blade fans are commonly used for large-volume dust collection systems because of their higher efficiency. Forward-curved-blade fans - These fans have curved blades that are tipped in the direction of rotation. They have low space requirements, low tip speeds, and a low noise factor.

6. Fan (machine) - Wikipedia

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

   High-pressure gases such as steam can drive a small turbine, and high-pressure liquids can drive a pelton wheel, either of which can provide the rotational drive for a fan. Large, slow-moving energy sources, such as a flowing river, can also power a fan using a water wheel and a series of step-down gears or pulleys to increase the rotational ...

7. Gas-powered leaf blowers face a moment of reckoning - AOL

   www.aol.com/news/gas-powered-leaf-blowers-face...

   At a distance of 50 feet, the average leaf blower emits noise between 64 and 78 decibels, the Boston Globe reported. The annoyance over the noise caused by leaf blowers is nothing new.