I'd say you can do a whole run with 1 to 3 20lb tanks depending on how sealed your room is. 40 sq ft of canopy isn't gonna use that much so leaks will be the deciding factor in how much you will go through.
What kind of AC?
Co2 usage 2x 16kw 25x25 625 sqft rooms? 50lb bottles/tanks
- Thread starter p0opstlnksal0t
- Start date
What kind of AC?
Thanks for the reply, man.
To this point, I've got a kinda "4 week, per 20lb tank minimum" idea in mind, otherwise it seems not worth the cost and hassle in this area. 6 weeks or more would be great, hah.
As for AC, I haven't decided yet. Mini-split, I wouldn't wanna mount on the front of the building. And a window or wall unit I definitely wouldn't wanna put out the (outside) wall or window. So either way I was figuring I'd be building an "AC box", reference ICmag forums.
I have a 12k btu dual hose portable, and know all about portable flaws. It's pretty shit at it's job, and would no doubt waste co2. So really, I'm looking at mcguiver solutions either way.
There is also two adjacent rooms, one is small though - like a lavatory, and the other is frequented so...that could be tricky, haha.
Thanks.
I'm not sure about keeping a condensor indoors how far away is the room from another wall that a mini split would be okay on, you can route a line set pretty far.
I understand the concern. Though, the condenser of a portable ac unit is kept indoors.
In a plastic shroud/housing no less, with shitty vinyl plastic flanges and ducting. Anything I were to do to mod/mcguiver an ac would be an improvement on any portable design I think, and definitely safe. Haha.
I measured about 16' from another wall where it *might* be more suitable to have the condenser mounted outside. But that's if the evap unit was mounted as close to the dividing room wall (which happens to be a closet) and that would have to go through that adjacent room and then through that room's exterior wall. But more realistically, I'd say 20' to 22' maybe, with turns and stuff.
(Edit: May consider mounting it on front side of building, as they're heat-pumps too.)
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p0opstlnksal0t
Well-Known Member
I'm going to see what.the cost is going to be for a 200+lb tank like what is used at breweries. Eventually I'll have 2 rooms plumbed up for co2 usage
Damn. Haha, you're fortunate to be able to have all these options man.
How do you plan on getting the 200lb filled? I couldn't imagine trying to move a full one.
I'm sure the company will come and service/fill it. Tank will be outside or something like that.
p0opstlnksal0t
Well-Known Member
They come out with a truck and use a hose
Keesje
Well-Known Member
My calculations were not off.
It is just another way to calculate.
In my calculation it became clear that 60 lbs of bottled CO2 = 20 Lbs of LPG turning into 60 lbs of CO2.
So that is 1:3
The 20 lbs CO2 in bottles contains 27% of Carbon as the video shows. The 20 lbs of LPG (a mix of butane and propane) contains 81% of Carbon.
So that is also 1:3.
The guy in the video made an extra step: He explained how much carbon you would eventually get from CO2 and from Propane .
But when you burn propane you don't get carbon as a product. You get CO2.
CO2 turns into carbon and oxygen inside the plant.
Almost any industry where they burn things.
They capture the CO2 that is released when, for example, they burn waste in those large installations.
When I said "It's not even close", I wasn't talking about your calculations, I was talking about the efficiency of using bottled CO2 (27% carbon) compared to using Liquid Propane (81% carbon).
I was talking about the value of one source being "not even close" to the value of the other. Not criticizing your calcs, haha.
I only provided the video link to further show that, and for anyone who'd like to watch and it.
All good
edit: fixed typo.
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Keesje
Well-Known Member
Ah, I misunderstood.
Sorry.
The video is interesting.
Although I would have no clue how much Carbon my plant needs.
Most plants - as I understand - all contain the same percentage of Carbon anyway.
Also I think it is not that important. You just put CO2 in your room and you hope it does not escape before the plants absorb it.
Sorry.
The video is interesting.
Although I would have no clue how much Carbon my plant needs.
Most plants - as I understand - all contain the same percentage of Carbon anyway.
Also I think it is not that important. You just put CO2 in your room and you hope it does not escape before the plants absorb it.
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Keesje
Well-Known Member
I do have also a question.
It is always stated "CO2 is heavier then air".
And this is true.
But if you grow on the 5th floor and you would measure the amount of CO2 there, or you grow in the basement and measure it there, you would probably not see a huge difference.
So even it is heavier then air... so what as there is no difference.
I purposely made the conclusion a little stupid, because I don't know either.
It is always stated "CO2 is heavier then air".
And this is true.
But if you grow on the 5th floor and you would measure the amount of CO2 there, or you grow in the basement and measure it there, you would probably not see a huge difference.
So even it is heavier then air... so what as there is no difference.
I purposely made the conclusion a little stupid, because I don't know either.
Check this out, dude. http://greenair.com/co2-generators/ir-28-mf
They make an IR co2 burner. I was reading their instruction manual (the third document in the list under the product info, it's a pdf) and it was actually quite informative, for me. It did give me reservations about their use too though. Skim or read over it, and the warnings etc. because somewhere in the first 7 or 8 pages it actually addresses the "co2 heavier than air".
Also, the document titled "highly recommended read" (word document) is a good read too. EDIT: it actually starts off with addressing that very point, I see after double checking.
Essentially, the co2 produced by heat/burning of fuel(s) is hotter than the other constituents in the air and it actually rises up with the heat and "pools" at the ceiling(!), and will likely stay there, in an indoor garden application, unless actively pushed down and mixed into the rooms environment. According to them.
Good reads, for sure.
I think the "Med-Tek" article on co2 enrichment *might* have mentioned something about this too...but I could be wrong, can't remember.
Keesje
Well-Known Member
I'm not always so convinced what equipment manufacturers say. Often they only understand half of what they do themselves.
I've read the documents. The story about warm CO2 could be true.
But when I also see in the same descriptions that they reduce the heat in the room by applying heatsinks to the generator, I become suspicious. Where does that heat go then? Suddenly magically disappeared?
When they write something like that, I start to question their other words too.
I've read the documents. The story about warm CO2 could be true.
But when I also see in the same descriptions that they reduce the heat in the room by applying heatsinks to the generator, I become suspicious. Where does that heat go then? Suddenly magically disappeared?
When they write something like that, I start to question their other words too.
Hah, I hear you.
As for that particular company/model, the heatsink fins are internal, and you put a duct adapter over them, then connect ducting to that adapter and run air over it. Like air cooking a cooltube/cooled reflector hood.
Edit: Growershouse has a video about it's function on youtube.
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p0opstlnksal0t
Well-Known Member
i will be contacting airgas or a co2 supplier nearby that fills the large tanks for local breweries. i think they will rent out the big 200-500lb tanks. first i want to run my room without co2 for a few runs to see how she produces without co2