What is ventilation, and how can a F.I.T. Ventilation™ System significantly help in moving heat and fumes out of the work space?

Essentially there are three methods of standard ventilation: Negative Pressure, Balanced Air System (or Push/Pull System) and Positive Pressure

With a Negative Pressure system, exhaust fans are used to try and suck heat and fumes out of the building. Negative pressure neutralizes in all directions -- top, bottom, left or right. So, if the emissions or heat are in the middle of a plant, negative pressure is very inefficent. The challenge with a stand-alone exhaust system is that most do not have the power to gather a large portion of air, and will only remove the heat and fumes directly in front of the exhaust fan. A simple illustration of Negative Pressure: try extinguishing a candle by inhaling rather than exhaling.

With a Balanced Air, or Push/Pull, System there are fans at one end of a building pushing air toward an exhaust system either on the ceiling or opposite wall. The challenges with a traditional Balanced Air System is that it requires expensive duct work, and there will quite often be "dead spots" as air flow can only travel limited distances depending on fan size or duct locations.

In a Positive Pressure System, shrouded fans are used and air is introduced into the space, increasing air pressure equally at all points inside the structure. When an exhaust opening is created, all of the interior air moves in one mass to the exhaust point. The key is to seal the opening with incoming air so the air within the building can only escape through the exhaust point. You must have more air coming in than going out.

Air Entrainment

A F.I.T. Ventilation™ System will work with all three ventilation methods. Utilizing air entrainment, the F.I.T. Ventilation™ Unit will create an 80-foot wide "wall of air", moving over 25,000 cubic feet of air, to move heat and fumes out of an area.
What is air entrainment? Air entrainment is high velocity air which grabs the surrounding air and pulls it into the main air stream . . . it siphons additional air into the pattern. It's like a Semi going past and pulling you in -- it pulls you into the air stream.

Place a F.I.T. Ventilation™ System at the opposite end of the room acting as make up air, and it will push a wide path of heat and fumes to the exhaust fans, turning a standard Negative Pressure system into a Balanced Air System for a fraction of the cost.

The F.I.T. Ventilation™ System is also the ideal tool for creating and maintaining a Positive Pressure environment, allowing for the ventilation of dead air spaces and eddies found in a standard Balanced Air system. As an example: One F.I.T. Ventilation™ Unit was placed in an air conditioned hallway outside of a non-air conditioned gymnasium blowing into a set of double doors, sealing the doorway with 25,000 cubic feet of air. The wall of air created by that unit pushed open the exhaust vents in the ceiling allowing the hot air trapped in the gym to vent, replacing it with the cooled hall air. In a Positive Pressure application, a F.I.T. Ventilation™ Unit will push the air to where ever you give it an opening - even something as small as a flexible exhaust duct - and it doesn't require an exhaust fan.

Since it's completely portable, the F.I.T. Ventilation™ System can be taken to where it's needed, and it allows for multiple airflow options for pennies on the dollar over traditional ventilation systems.

F.I.T. Ventilation's™ method of creating two air streams into a singular mass of air allows for increased efficiency by displacing a greater volume of air. The air flow is constant and spreads an air mass into a 160 degree (80 foot) wide pattern. A conventional fan, with an 11 degree air pattern, displaces only the air directly in front of the fan.