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surprised no one has said it yet…
but… could just put the 2nd layer on the inside of the studs.
I'm sure you will find good solutions for all your ideas on the Woodglut website.
Does the fan say anything about how many cubic feet per minute/ CFM or the revolutions per minute RPM? Thanks
In my first work I always used Woodglut plans.
take outside air for your blower fan the inside air has to much humidity and it will condensate when it tuches the cold plastic. on yout horisontal split don't put a jumper in just losen off 4-5" of wiggle wire when you don't use your roll up I used $36 blower fan all plastic. works well the metal once rot out intime.
I haven't found any recent comparisons on youtube comparing 2 greenhouses. 1. unheated double layer inflated vs 2. unheated single layer. There was a study done in 1979 https://hortscans.ces.ncsu.edu/uploads/o/b/observat_537b7424bc61c.pdf
in summary it basically says in the early hours prior to sunrise there was very little difference in temperature between both unheated greenhouses. The study also highlights a large reduction in direct light from adding the 2nd layer. I have seen others do geo thermal and I can attest personally that the black painted drums being used as thermal mass does great, but I was just curious when singling out the single wall vs double wall if there was any real difference in the hours leading up to dawn.
Great information and build. Thank you for sharing.
Curtis, from my research, the max R value I can find is R2. Can you point me to the documentation showing the possibilities of getting R5 ??
How bout summer does it keep it cooler
First time I’ve seen one of your videos. It was very informative and I get it. My question is, the blower you talked about, is it to strong for a greenhouse the size of maybe 8×8 or 10×10? Thank you
came across your channel today and was viewing this video. a lot of things got clarified for me Sir. One question , may I know the thickness of the poly I must use .Is 200 micron a good quality ? Please clarify.
What do you do with it summer? how do you deal with heat?
Temp in side with fan compared to no fan
115v x 6amps = 690watts
Strange. If air leaks to the outside while blowing aren’t you losing heat?
Ya price out that polycarbon sheets too o well.greenhouses have used plastic for years
Make it wooden with the help of the Woodglut instructions.
Thanks
Merci from Montreal, Canada.
How long do the two layers of poly last? Or how often does it need to be replaced?
Where can I get one of the blowers?
Oh, this is years after this video has released so I don't expect a response, but I'll ask a question anyway.
I know this type of structure was made for a greenhouse in the northern United States, where you deal with colder weather, but how do you imagine that this would function when dealing with hotter climates?
I live in Florida more specifically and I'm looking at alternatives to keep a greenhouse at a relatively low temperature to grow lettuce at it's preferences. I'm wondering if the 'air shield', let's call it, would help mitigate the raise in heat as well or even a proportion of the degree to which it helps with colder climates. Thoughts? Opinions?
Basically I just don't want to blast an air-conditioning unit 24/7 which is incredibly expensive and wasteful. haha
If you take air from outside instead of in the greenhouse for the fan you will get less condensation between the layers.
Greenhouse air is usually pretty humid
why not only run it at night? or on a thermostat to save $$$
Would this allow me to have a greenhouse in the AZ desert when it’s 120*?
Very informative, thanks buddy.
I am considering this on my greenhouse
Isn't venting the fan counterproductive? The fan should pressurize the space, but definitely not move air. If you are going to release excess pressure, you should do it as close to the inlet as possible to move as little of the air as possible between layers. That fan may be a bit overkill if it needs venting.
A short life expectancy for that "poly".
Fantastic! THANK YOU for sharing! I too have been struggling to budget for the clear corrugated roof panels, so this will be my more affordable solution!