Where is the best place for a 12" exhaust fan for my greenhouse
jbull232 wrote:
If anyone has any links, please let me know. Thanks How big is your greenhouse? is a 12" fan large enough? In general, the fan should go as high as possible since heat rises. That also might put it more out of the way. Fans are generally placed on the end walls (assuming your greenhouse is a traditional style for which you can define end walls). Of course the vents for replacement air should be on the opposite end wall so that the cooler air goes through the greenhouse. For safety reasons, guards are required on any fan within reach. (another reason to put it really high up). You might want to put the thermostat at crop level. If this is a small greenhouse and you're using one of those cheap plastic box fans, install it so that it's easily replaceable. The plastic gets brittle in as little as one year and the guard starts to disintegrate. Also, the bearings in the cheap fans aren't designed for long term operation. I get an average of two years out of the cheap box fans used as circulating fans, after which they just sieze up. The commercial fans last longer, but not in proportion to the extra cost (not figuring in labor costs to replace the fans more often). Sorry, but I don't have any links for greenhouse design. |
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