Diy air cooler easy free fast

372

New Member
this trick pulled my temps down 5 degrees fa' in a few minutes

SUPPLIES:
1-any fan even the small week clip fan the 1 already blowing on your plant
2-hanging wire
3-small clean rag
4-a little water

directions:
1-wet the rag
2-ring out so it wont drip at all to avoid any danger w/electricity
3-hang the rag so the fan hits it but in a way the rag dont block your air flow to your plant


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:mrgreen:thats all floks:mrgreen:

temp control
the stronger or bigger the fan the cooler the air, the more wet rag exposed to the fan the cooler the

notes:
this raised humidity in 2x2x5 ft tent by about 5% as well if that is a problem just stick a piece of charcoal in the room its a natural dehumidifier

this thing goes for about 3 hrs till i need to rewet the rag
:peace:bongsmilie:eyesmoke::peace:
 

dangerlow

Well-Known Member
I'll be honest with you that sounds like way too much trouble. But a $99.99 air conditioner from walmart and put her on a timer now thats your ticket.
 

cues

Well-Known Member
Also remember higher humidity stops carbon filters being effective. I use this method occasionally in veg (have posted similar before) but only for raising humidity. I can't see how it would affect temps much.
 

joe macclennan

Well-Known Member
because when anything evaporates water,sweat, refrigerant. The substance absorbs heat. When it condenses it releases heat. The entire process of refrigeration is based on this.
 

sandjsdad

Well-Known Member
... An air conditioner also removes humidity very effectively.
Yes it does but not everybody can afford to buy an AC unit much less pay for the extra electricity. 372's method is easy and FREE! Yes it won't work quite as well in high humidity but there have been occasions where I wished I could cool my tent for just a couple hours on those hot summer days. i wouldn't have the need for an AC unit.
 

lushgreen

Active Member
Wouldn't this method raise humidity as the water evaporates? Also the rag would need to be constantly kept wet which would be a pain.
 

372

New Member
OK GUYS I FOUND A BETTER SOLUTION FOR DIY AC IF U HAVE THE ROOM AIM THE FAN ON FROZEN WATER BOTTLES IT COOLS THE AIR MUCH BETTER N QUICKER I TRYED IT IN A SMALL ROOM THAT THE TENT IS IN WITH 1 FROZEN WATER BOTTLE JUST TO SEE IF IT WORKS
THIS REALLLLY WORKS!
ALSOBEFORE FREEZING add about 2-3 tablespoons of salt to each water bottle HERES WHY

Adding salt to the ice/water mix causes a temperature drop that slows the melting rate and increases the freezing rate . The net result is that the ice melts more and more slowly after the initial addition of salt.
Why does salt melt ice? In pure water, at 0°C, ice melts just as fast as water freezes. You won't see any of the ice melt as long as the freezing rate and melting rates are exactly equal.

Adding salt (or any foreign substance) to the water upsets the delicate balance between freezing and melting. Fewer water molecules reach the surface of the ice in a given time, so water freezes more slowly. The melting rate isn't changed by the salt, so melting "wins".

Does adding salt to ice and water cause a temperature drop? Yes. This is how old-fashioned ice cream makers lowered the temperature of the ice cream below water's ordinary freezing point. A mixture of rock salt, ice, and water packed in the bucket around the ice cream mix can bring the temperature down as low as -21°C.

Why does the temperature drop? Energy is required to snap the hydrogen bonds that hold the ice together. The melting ice draws that energy from the surrounding solution as heat.

THIS SALT IDEA IS PROBABLY GREAT FOR HYDRO RESERVIOURS TO KEEP TEMPS DOWN FOR THE ROOT ROT PREVENTION- WILL SOON CHECK DURING AN UPCOMING HYDRO GROW
 

kupihea

Well-Known Member
Thanks for this information. Great science project for when I get a little free time. I occasionally need to lower temperature and don't want to spend 45 cents per kWh on AC. I might add a minute of drip irrigation to the rag a few times a day. Cheers
 

Humanrob

Well-Known Member
Another augmentation to the wet rag 'swamp cooler' method (of course, assuming humidity is not a problem), is to have the rag hang in such a way that the bottom is sitting in a tray or shallow bowl of water, then as the water evaporates from the surface of the rag, it is simultaneously drawing water from the reservoir. Depending on the space, the airflow, the fans… in my limited experience this can reduce air temps by a couple of degrees. I would imagine it is best suited for smaller spaces, like closets and boxes.
 

cannabisdreams

Well-Known Member
Hi all.
I needed to add a little humidity to my closet grow and came looking here for ideas. Thanks! 372 and Humanrob for giving me a cheap and easy idea. This is what I did. I hung a rag from my light, which dips into a bowl of water. the fan only needs to sit next to it, not even directly in its flow. It actually does lower the temps a little and definitely adds a little moisture. Because of the fan, the water in the bowl is ice cold, even sitting 2 feet away from the lights (spectramax 516). After eight hours I used about eight ounces of water, so its evaporating at a rate of about one ounce per hour. I will test with a meter once I have mine. This is just a temporary solution for me but my plants have perked up so much in the past eight hours I am sold. Great idea!
 

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