diy air conditioner

ficklejester

ficklejester

Well-Known Member
dirtyrigger said:
Mr.jester what you are referencing is about outdoor humidity. Mother nature does not use condenser coils and evaporator s that is why in nature the pressure can drop reducing temps or the sun can be blocked also reducing temps but not affecting the absolute humidity, thus relative humidity goes up. Inside is different, all air conditioners remove heat energy from the air passing over their evaporative coil, some is sensible heat (meaning it reduces the air temp) and some is latent heat (meaning it will cause water vapor to change state and condense back into a liquid). ALL air conditioners dehumidify. In fact if you have an undersized a/c in a very humid environment about the only thing it will do is dehumidify.
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I never said ac units don't dehumidify, in fact I said they do humidify- reread my post. The point I made is they raise the relative humidity. Relative humidity has nothing to with inside/outside or ac or shade- it's an equation, a ratio of pressures. Here's the first result of thousands from google http://theweatherprediction.com/habyhints2/510/
 
Cannabidude

Cannabidude

Well-Known Member
dirtyrigger said:
Mr.jester what you are referencing is about outdoor humidity. Mother nature does not use condenser coils and evaporator s that is why in nature the pressure can drop reducing temps or the sun can be blocked also reducing temps but not affecting the absolute humidity, thus relative humidity goes up. Inside is different, all air conditioners remove heat energy from the air passing over their evaporative coil, some is sensible heat (meaning it reduces the air temp) and some is latent heat (meaning it will cause water vapor to change state and condense back into a liquid). ALL air conditioners dehumidify. In fact if you have an undersized a/c in a very humid environment about the only thing it will do is dehumidify.
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this
 
chuck estevez

chuck estevez

Well-Known Member
ficklejester said:
I never said ac units don't dehumidify, in fact I said they do humidify- reread my post. The point I made is they raise the relative humidity. Relative humidity has nothing to with inside/outside or ac or shade- it's an equation, a ratio of pressures. Here's the first result of thousands from google http://theweatherprediction.com/habyhints2/510/
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your concept would hold water IF, a/c used air from outside to bring inside, Unfortunately, it doesn't, it recirculates the same air,passing 0ver a evaporator coil.removing moitsure each time it passes
this is why people who don't like a/c,don't like it because it dries them out.
 
Cannabidude

Cannabidude

Well-Known Member
ficklejester said:
The point I made is they raise the relative humidity. Relative humidity has nothing to with inside/outside or ac or shade- it's an equation, a ratio of pressures.
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they do not raise relative humidity bro you have to have a source of water for humidity to increase. as stated ac recirculates completely invalidating your argument. scream about pressure ratio all you want you need to understand the entire system, not just one concept.
 
chuck estevez

chuck estevez

Well-Known Member
ficklejester said:
Agree to disagree :cool:
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guess I'll take my 20 years a/c experience and My sealed room that I use My ductless A/c to keep humidity down for past 5 years and agree to disagree.:bigjoint:

Maybe you could explain WHY my humidity sky rockets when the a/c breaks down? HMMMM!!
 
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Da Mann

Da Mann

Well-Known Member
Back to the Original post....You can put 2 liter bottles of frozen water in there and when they thaw refreeze them. Keep twice as many bottles as the chest will hold. Put them in and rotate them.
 
bravedave

bravedave

Well-Known Member
Again...the concept works it practice. Use 2.5 gallon frozen containers and it will last longer. Yes, dry ice would be great if cheap and readily available...might create an nice eerie fog given the right conditions. No, there was no noticeable change in humidity when in use. Probably not as good of results as a swamp cooler in dry conditions, but my experience places the cooler outside the room with the intake sucking air through it...it kept my well-insulated room a good 10 degrees cooler than outside it. see https://www.rollitup.org/t/amish-redneck-cooling-filter-box.836280
 
Big Perm

Big Perm

Well-Known Member
Da Mann said:
Back to the Original post....You can put 2 liter bottles of frozen water in there and when they thaw refreeze them. Keep twice as many bottles as the chest will hold. Put them in and rotate them.
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And if you do this with no water in the actual cooler, the bottles will sweat. If you switch them out before the sweat evaporates you are in fact taking moisture out of the air, or dehumidifying while cooling....A/C. js (if the intake is coming from the grow room)
I would personally just drop $100 at home depot on an air conditioner, but obviously not every grow room will accommodate that, so people have to improvise, adapt, and overcome. Everyone is working with different elements in their game. This isn't a bad idea for people that have similar elements controlling their grow.
 
theking2202004

theking2202004

Active Member
Blocks of ice in water last 8 hours in a water jug. I'm a welder and buy blocks of ice daily in az

dirtyrigger said:
If you use a block of ice with some water instead of cubes it should last for quite a few days. My work often brings me to the rooftops of Phoenix during the summer months and if a block of ice can last 2-3 days in a water cooler surrounded by 130*f ambient then I would expect it could go at least 3 days in a grow room. Not bad for $3 with of ice. ... but this won't do anything for your humidity levels like an a/c would so it all depends on your exact needs are.
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