greenhouse vent fan

Move and refresh the stagnant air flow in your greenhouse or building to make a healthier and more productive growing environment. These greenhouse Greenhouse Vent Fan exhaust supporters are excellent for reducing plant and worker heat tension. Our exhaust fans provide exceptional ventilation for high tunnels and frosty frames. Create a cooler more comfortable growing environment, which can directly contribute to efficiency, quality and profitability for your greenhouse business. Exhaust fans also functions great in workshops and buildings.
Move and refresh the stagnant air flow in your greenhouse to create a healthier and more productive environment. These exhaust & circulating fans are excellent for plant development. Create a cooler convenient growing environment, that may directly contribute to productivity, quality and profitability for your greenhouse business.
The concept of cooling a greenhouse with thermal buoyancy and wind goes back to the start of managed environment. All greenhouses constructed just before the 1950’s acquired some type of vents or louvers that were opened to enable the excess heat to escape and cooler outside air flow to enter.

When polyethylene was developed with large sheets covering the whole roof, placing vents on the roof proved difficult. Engineers after that came up with the concept of using enthusiasts that attract outside air flow through louvers in one endwall and exhaust it out the contrary end. With thermostatic control, this was, and still is the accepted method for cooling many structures where positive atmosphere movement is needed.

Growers with hoophouses possess found that roll-up sides work well for warm period ventilation. Both manual and motorized systems are available. A location with good summertime breezes and plenty of space between homes is needed. It helps to have greenhouses made with a vertical sidewall up to the height 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 high 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 swiftness of 2-3 miles/hour provides 80% or more of the ventilation. Wind passing over the roof creates vacuum pressure and sucks the heated surroundings out the vent. If sidewall vents are open up, cool replacement air enters and drops to the floor level. If the sidewall vents are closed, awesome air enters underneath of the roof vent and the heated are escapes out the top of the vent.


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