Cooling a Greenhouse with a Cooling Wall
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- Опубликовано: 29 авг 2024
- Cooling walls are a great way to buffer those hot summer days inside your greenhouse. In this video, Dr. Nate Storey of Bright Agrotech shows you what a homemade cooling wall looks like and how they work.
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Many years ago we would visit wholesale plant grower businesses in hot hot hot Texas and they had these huge greenhouses using this same concept. By far my favorite place; one didn't want to get out of them 🙂
Some comments are as rude as Troll Dung on an Ogre Path. I appreciate all the great work Chris and all of these guys at Bright Agrotech have been doing. Every since I have started following their work I have been excited to get involved in the process here. I grew up part time with an expert Nationally recognized marksmen. His hand movements as well as many surgeons are similar to the presenter's.
John Brooks Thanks for the nice comment! Glad to have you in the community!
Thank you for this! I just saw one of these for the first time in a Cactus Store greenhouse in the Desert, and haven't stopped thinking about it. Thank you for the information, it was just what I was looking for!
So glad to hear it was helpful, Lori!
Great project ...I have to make one for my garden hut.🎉
Doesn´t it get moldy? How long does the cardboard last? Are there any alternative materials that you know of?
It's a coated product that last years... it's a ecosystem on its own tbh 😂so yes can mold
Tnx a million very usefull also 4not being a boring as..h..e talking about "myself". Simplicityis da best. Thank you again.
Perhaps I missed it.... what WAS the temperature prior to the evaporative cooler? Thanks.
He said: " it's way way cooler " 😎 😉
Really awesome video and very informative....plz update on plumbing the cooling pad from start.
2:11 water are 55 gallons for 10 cell pad👍
What if you’re in a high humidity area anyway? Will it still cool well? Should you bleach the water? To keep fungus / algae out?
What does "a way, way cooler" mean? Can you provide some numbers in terms of inside/outside temperature?
a Local Garden Store where I live has one of these. on a 101º day, it is under 70º in the Greenhouses
Thats pretty awesome, and maybe even draw it through your house at the same time.. Good video Friend
jody sephus Thanks! Glad you enjoyed it, Jody. Have a great weekend.
thank you
You're welcome
How to choose the surface area for cooling pad based on polyhouse area also about fan size
Hi, how long does the cardboard keep (with the water running thru)?
How low is the temperature can we gain from this system? How many degree lower compare to temp outside green house?
can you give more info on the type of pump used for this system?
Hey Nate, pretty cool lol. A future project for sure.
Glad you think so, fiskfarm! Bayberry Fresh has quite the setup these days.
Just wondering if you have any experience using fogging systems like the ones from Jbird as evaporative coolers. They claim that their products are more efficient than pad and fan but I'm mostly interested in cooling results as I'm in Phoenix Az
it is good idea, but do you clean scaling or salt deposition on pads or Honeycomb ?
Interesting. For greenhouse? What about a tiny house? A bit humid so that would be a challenge. Maybe mold and mildew challenge as well. But every challenge does have solution.
It might be good in a dry environment. Try using that in a humid environment
So it doesn't work in a humid environment?
If you are growing plants such as orchids or carnivorous plants that are highly sensitive to water additives like chlorine etc... will it hurt using tap water in the cooling system or do you have to use R.O. water or well water? Thanks for any info. (I am not informed on info if the chemicals survive the transition from liquid to vapor )
Hey Aaron, This shouldn't be a problem at all, the only reason you would maybe want to use clean or RO water is to prevent buildup on the cooling pads. Hope that tip is helpful.
if this was in an aquaponics set up... Couldn't you inoculate the cardboard with gourmet mushrooms and pump the nitrate rich water through it to feed them? Dual purpose wall that would eventually start paying for itself.
Brandon Carrion That would be something to see! Let us know if you try that. Would love to see a video or two on your setup.
haha, just asked the same question :-D
You would need specific strands of mushroom, very constant temps and unwavering humidity at certain levels. Then it wouldn’t work for your og purpose bc mycelium would either eat or clog the channels of the cardboard and the stuff used to treat the cardboard first would likely have things in it you wouldn’t want to eat from the mushrooms.
So now you have hot, WET air in your greenhouse. Yeaaaah...
Hey bud what size pump do you have installed in that? Ive got a mining container that has 8, 6 ft pads that are about 4 ft wide. Trying to figure out what size pump i need. The cfm is gonna be about 36000 cfm
Do you use roof vents I have 4 and think it would affect the air pressure required to pull air through pad.
What about legionel·la? And all this deseas ?
You shout add some químics right?
Why dont you use seawater? How to separate the brine?
Good question. It's because cooling walls use a paper or aspen media, it needs to be watered with a very low TDS otherwise the media gets damaged. Saltwater would be quick to ruin the media quickly and clog distribution lines.
cool info.
How much temperature is decreased?
underfulmen very nice
Fackin awesome!!
how many degrees these walls can cool down?
How long is that cooling wall? I have a 16x32 high tunnel and was planning on making one like this. Seems like the media is about $120 for a 5 pack that is 6"D x 12"W x 36" L. So to do my 32' length of high tunnel it would be about $715 in media. I guess considering swamp coolers run upwards of $1500 - $2000+. I figure after I buy a pump, pvc and fittings I will probably spend another $200 or so. All in all from my estimates would be about $1000 to do a 32' long swamp cooler.
Hello! As a rule of thumb you want to have a square foot of cooling pad for every 200-300 cubic feet of air in your greenhouse. This will need to be adjusted though if you are in a high humidity or high temperature environment!
@@ZipGrowInc Thanks for the reply. I finally figured that calculation out and after that I was concerned that this would be a good solution for me or not because I am in zone 7b with high humidity summers. Often 90-100 F with 80-100% humidity. So some were saying that the efficiency of a swamp cooler in a high humidity environment is virtually 0%. But I am still learning and trying to find a good solution. I have started to try and find out what other greenhouses do in my area but I have a feeling they are just using huge fans/shutters and are just running better equipment and moving more air but will need to find out.
@Cloud 9 I will be honest. I never went this route because of the humidity/temps I typically see in my greenhouse. After calculating the temp/humidity for my zone I found that after a point the returns of cooling diminish. As more humidity is added to the greenhouse and as the Temps increase you get less and less cooling capacity.
I am working on a geothermal implementation. I decided that using this technique would net more cooling capacity and additionally I am working on developing my own dehumidification system. I am intending on using solid desiccant for the moisture absorption and the only thing I need to figure out is my drying process for the desiccant.
I think these systems really perform the best in areas that have a lot of dry heat and don't have ambient humidity to deal with. There is also the the evaporative cooling effect where the moisture that lands on the plants will allow some heat to ransfer to the moisture droplets and evaporate into the air.
Zone 7 can be somewhat tricky in my opinion because of the diversity of weather and temps we see here. Anywhere from way below freezing all the way up to 100+ and 100% humidity.
I also already use overhead sprinklers and drip tape in my greenhouse. I sometimes use my overheads on the crops that can be top watered in that transition between spring and summer and that works like evap cooling for those crops. I just can't do that in summer with my nightshades and most other summer crops. If I do top water them it will only be during the early morning so that the water can dissipate and evaporate by mid day. Never top water at night as that will encourage rot, mildew, etc. Water will stay in contact for too long with temps being too low making the perfect environment for those to thrive.
Hi do you have plans or some to know how you build this
What if you live in Florida, where it is very humid most of the time??
windridercreations They're not the most effective option for Florida growing conditions. Are you using any shade cloth yet?
Bright Agrotech No, exploring options for a Florida greenhouse.
Hey Nate, how often should we have to add water into 55 gallon reservoir?
he said that he was using between 30 and 40 gallons a day when its really hot so daily in a hot season.
use a float valve conneted to a garden hose.
can you use grey water for this purpose?
as an idea maybe to conserve/reuse...
I think it's better you told the temperature and humidity difference in and out of the green house. evaporated cooling systems are increasing the humidity of the system. that is not good at all.
Sachintha Dahanayaka adding humidity is good if you live in a dry climate.
dezertXer yes that's correct
If you have a humid environment these won’t work.
if it is 9-13º Humidity - the added Humidity feels pretty good.
does this work on 4000sqft polyhouse in south india where summer tops 40 c..... planing to grow lettuce..... helppppp
Brother same plan here and i can understand your situation i am from even harsh summer 49c in summer.
I too have a polyhouse of 1acre in Thanjavur district and looking for a similar solution to bring down the inside temparature.
3:01 one day spent 30 - 40 gallons
Could you combine the cooling with growing mushrooms on the cartboard wall? :-D
Zjef Van Acker It's possible! Let us know if you try it!
Bright Agrotech Haha, I will, don't have a cartboard wall yet, or a greenhouse for that matter. So also let us know if you try it first :-D
Will do, Zjef Van Acker!
I have a greenhouse i just built in northern CA. it seems as tho it gets really hot running at temps in the high 90's to 112ish even here in October. its only a 10x20x9H hoop house. I've set it up as an inflatable 2 layer and now have a 30-35% white shade cloth on it and dual exhaust fans that each do about 1100CFM but still am getting close to 100's on a 85-90 deg day. i have yet to plant anything because I'm concerned these temps are too high. do you think a cooling wall of some sort can help me get my temps down or should i try other measures?
thanks
THE MESSY MEDDLER yes, its either make a wet pad wall like this or get a high pressure fogging or mister cooling system.
what is your Humidity %? anything over 50% will provide Poor Results from a Evaporative Cooler.
Northern CA person checking in 4 years later, did you end up trying it out? I'm going to want a greenhouse setup soon and need to find a way to fight the oppressive summer heat here!
I would be interested to know how many degrees of temp drop you get below abbient, from the use of that 30 gallons of water in a day.
That's a great question, Tron - I'll ask Haydn at Bayberry Fresh and get back to you!
Bright Agrotech yes I would be interested in knowing as well :)
The home units used in the American SW will drop the air about 25-30F from outside temp, and they do it with a lot less pad and water. Maybe 10 gallons a day and 20 sqft of pad.
@@elBorrachoGuapo True, however a common Pad for a residential home is less than 3ftx3ft cooling a 1,500 sq ft home. This example is using an entire wall area to cool an entire Greenhouse -more sq ft of pad = more sq ft of cooling
Can you use a swamp cooler instead of this?
this is a giant home made hand built swamp cooler. A swamp cooler is same as an evap cooler.. its just a fan that draws air thru a membraine with water in it so that the water cools down the air that is pulled thru it by process of evaporation.. simple stuff! have a good one
Good Answer
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You could literally just throw an air conditioner in there, it would probably work better and be cheaper.
Fuck no, you ever ran an AC in your home and see the price there? Imagine outside with an uninsulated greenhouse. This is a lot more efficient and worth the set up.
sure if you want to spend 30000 dollars on electricity bill to get a produce that is 300 dollars worth
You showed next to nothing. Basically you stood in front of a wall and talked. Can we get a follow on video that shows how it is built, show comparative temperatures. etc.
You know, useful stuff.
Hey ya wanna know something? You are a Jerk. The man posted an Awesome Video & you want him to hold your Hand?
he seemed uncomfortable and didn't know where to put his hands, unnatural movement. instead of punctuating his speech, with his hands, he seemed to use his hands in spit of his speech. didn't enhance his speech, distracted from it.
shakaama Are you some kind of public speaking critic? I didn't notice or was distracted by any of those things!!
+Brad Suarez seriously, I was too turned on by that manly beard to notice anything else! haha
u speake ebonics is why
Maybe you missed the point - he illustrated an Excellent example of Evaporative Cooling. So maybe he wont win a Grammy or Speech Trophy?