greenhouse vent fan

Move and refresh the stagnant air in your greenhouse or building to make a healthier and more productive developing environment. These greenhouse exhaust enthusiasts are excellent for reducing plant and worker heat tension. Our exhaust fans provide exceptional ventilation for high tunnels and frosty frames. Create a cooler convenient growing environment, that may directly contribute to efficiency, quality and profitability for your greenhouse business. Exhaust enthusiasts also functions great in workshops and buildings.
Move and refresh the stagnant atmosphere in your greenhouse to make a healthier and more productive environment. These exhaust & circulating fans are great for plant growth. Create a cooler convenient growing environment, which can directly contribute to productivity, quality and profitability for your greenhouse business.
The idea of cooling a greenhouse with thermal buoyancy and wind goes back to the start of controlled environment. All greenhouses built just before the 1950’s got some kind of vents or louvers which were opened to enable the excess heat to flee and cooler outside air flow to enter.

When polyethylene originated with large sheets within the whole roof, putting vents on the top proved difficult. Engineers then came up with the concept of using enthusiasts that Greenhouse Vent Fan attract outside surroundings through louvers in one endwall and exhaust it out the opposite end. With thermostatic control, this is, and still may be the accepted method for cooling many structures where positive air flow movement is needed.

Growers with hoophouses have found that roll-up sides work very well for warm period ventilation. Both manual and motorized systems can be found. A spot with good summer breezes and lots of space between homes is needed. It can help to have greenhouses designed with a vertical sidewall up to the elevation of the attachment rail to lessen the quantity of rain that may drip in.

Greenhouses with roof and sidewall vents operate on the principle that temperature is removed by a pressure difference created by wind and temperature gradients. Wind plays the major function. In a smartly designed greenhouse, a wind rate of 2-3 miles/hour provides 80% or even more of the ventilation. Wind passing over the roof creates a vacuum and sucks the heated atmosphere out the vent. If sidewall vents are open up, cool replacement air flow enters and drops to the floor level. If the sidewall vents are closed, cool air enters the bottom of the roof vent and the heated are escapes out the very best of the vent.