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10-07-2007, 05:20 PM
| #11 | ||
| Medical MJ Cultivar   Join Date: Oct 2001 Location: slowly sinking into the ground....
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  | Ok so after pondering it more and more and checking my cash flow, i decided what the hell i have nothing to lose to make a dehumidifier i have all the parts laying around.... and here it is..... two peltier plates a bunch of copper and a old power supply..... after maybe 10 min it had condensation on it already(you can see in the pics) and its in a room that has very little humidity already..... I will hang it in the grow cab asap and see how much water it collects... | ||
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10-07-2007, 06:43 PM
| #12 | ||
| Medical MJ Cultivar Join Date: Oct 2001 Location: slowly sinking into the ground....
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|  so i put this together in some haste and just assumed those fans blew air out but no its the opposite and they suck the air in......so i jimmy rigged a fan to blow the right way...... update in a few hours and we will see how much water i collect... | ||
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10-07-2007, 06:47 PM
| #13 | ||
| Grand Master Gardener  Join Date: Nov 2003
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| Thanks for the link. I was looking for the last night and today and couldn't find one under $160. I had one that was 80 from Walmart but it didn't work too well. Now that I read your whole thread  where did you get those plates? That sounds like a nice little project and you could control it a better.
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10-07-2007, 07:55 PM
| #14 | ||
| Rich & Meaty!  Join Date: Apr 2005
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| it's a walk-in closet about 5 x 4 and 9ft. headspace
__________________ Have you seen Rodney Stanger?  | ||
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| The Following User Says Thank You to g13laze For This Useful Post: | snwbrdr (10-07-2007) |
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10-08-2007, 12:37 AM
| #15 | ||
| Medical MJ Cultivar Join Date: Oct 2001 Location: slowly sinking into the ground....
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| heres the final version of my DIY, its gonna run all night and im going to measure how much it collects and temps it keeps my cabs and the humidity change of course....i know it works i just wonder how well.... | ||
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| The Following 2 Users Say Thank You to snwbrdr For This Useful Post: | analog (10-09-2007), hotpantsdan (10-08-2007) |
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10-08-2007, 07:02 PM
| #16 | ||
| Gardener Join Date: Aug 2006
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| you should include some instructions if this works well, i'm interested
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10-09-2007, 12:59 AM
| #17 | ||
| Medical MJ Cultivar Join Date: Oct 2001 Location: slowly sinking into the ground....
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| well it did one of the things i wanted it to, which was keep the ambient night temps above 70....... it does remove humidity, im not sure how much though since I had a major design flaw.......the water leaked back into the cab instead of draining out.......it had maybe an ounce or two inside of it when i opened it up today(it was running for about 12 hours) so thats not too bad i would think however, i think my plants are drinking and transpiring sooo much water it might just not be enough. Im somewhat thinking these small peltier dehumidifiers would work best with 2-4 plants in a very small cab, smaller than mine which is only 12 sq feet(78 cubic feet) I will either redo mine so that the water will drain properly or possibly just buy one and compare the results, im half curious to see if i built mine right........I cant afford a larger model so i might just gamble the 40$ and see what happens, if not theres always ebay right?  | ||
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10-09-2007, 07:05 AM
| #18 | ||
| Jr. Gardener Join Date: Aug 2007 Location: Rocky Mountains - Co
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| You could move to my state where we have an average of about 20% RH. If you go to a humidistat website they wil have a chart that shows the amount of water that can be held at what temp for the RH at any given humidity. That may help ya a bit. Nice DIY too! Russ
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10-09-2007, 08:54 AM
| #19 | ||
| Medical MJ Cultivar Join Date: Oct 2001 Location: slowly sinking into the ground....
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ok so i have not slept much so if i messed up some math or something im not gonna be too shocked..... this website gave me the formulas i used to find the density of the water vapor in the air at 30 c and 84% RH what I came up with was approx 13 ounces / cubic meter and my cab is about 2 cubic meters giving me 26 ounces of water in the air....? does this even sound a little bit right gals and guys? ima take a nap and then redo my math in the mean time maybe someone who uses math more frequently than I can give it a whack and tell me how many ounces of water i have when my temps are 30 c and 84% RH..... | ||
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10-09-2007, 03:27 PM
| #20 | ||
| Medical MJ Cultivar Join Date: Oct 2001 Location: slowly sinking into the ground....
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| tried to put a table in here and it was just jibberish, sorry for the useless post Last edited by snwbrdr; 10-09-2007 at 03:29 PM.. Reason: messed up | ||
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