Hollis Homemade AC

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Home Made Manly Air Conditioner(can also heat)by hleon on April 3, 2009

Table of Contents

License: Attribution Non-commercial Share Alike (by-nc-sa) .............................................................................

Intro: Home Made Manly Air Conditioner(can also heat) ................................................................................

step 1: Step One: Supplys ......................................................................................................

step 2: Step Two: Build It. ......................................................................................................

step 3: Step Three: Enjoy It. .....................................................................................................

step 4: Specs ................................................................................................................

step 5: Updates ..............................................................................................................

Related Instructables ...........................................................................................................

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Comments ...................................................................................................................
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License: Attribution Non-commercial Share Alike (by-nc-sa)

Intro: Home Made Manly Air Conditioner(can also heat)I was wanting an air conditioning unit for my tree house. So I thought, why buy a $250 A/C unit, when I could build my own?It is very low cost to operate, compared to a central a/c, and provides spot cooling/heating, only cooling/heating the areas you want to cool/heat, heatly.

It is also eco friendly, because it uses water as refrigerant, and it can multi-task, cooling/heating the room, while cooling/heating your beverages (or whatever) in thecooler.

For more cool stuff, go to http://www.worldofhollis.webs.com/

Image Notes1. Thermomiter2. Pretty kink(a hack saw will get that out nicely)3. I normally keep it on 3, because it puts the most cold air out on it. Two is for keeping a temp, and one does barely anything.

step 1:Step One: SupplysSupplys needed:Salvage from the house(or Walmart):

1 Box FanScrew DriverScissorsUtility KnifeEst. cost $0-$25

Buy at Lowes:

1 Smartpond 155 gal/hr fountain pump1 20' box of 1/4"(ID) copper tubing1 20' coil of 3/8"(ID) vinyl tubing2 hose clamps1 pack of zip ties

1 Cooler-32qt(8 gallons)Est. Cost $50.00Congrats. You just got through step one.
http://www.worldofhollis.webs.com/http://creativecommons.org/licenses/by-nc-sa/2.5/


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step 2:Step Two: Build It.take the fan. turn it to where it sits front-up. Start coiling the copper around the fan.place a zip tie every 6" of copper. Once finished coiling, attach vinyl tube to feed end of copper.Then, lead the tube to the pump. Connect it. then, cut the tube in half. Clamp the remaining half of tube to the return line, and lead it back into the cooler. Use the hoseclamps to clamp down the connection between the copper and the vinyl tubing.

Image Notes1. Used the block cut out to clog the hole to minimize the loss of coolant.2. I learned a lesson the hard way. I bought a styrofoam coller, only after I buy it


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my dad tells me styrofoam is porus, which means it does not retain water.

step 3:Step Three: Enjoy It.Fill the cooler up with water, and plug in the pump. Let it run for 3 minutes, to get the coil cold, and then turn on the fan. Enjoy your new cold stream of air! I have madmods in the updates step.

Image Notes1. Thermomiter2. Pretty kink(a hack saw will get that out nicely)3. I normally keep it on 3, because it puts the most cold air out on it. Two is forkeeping a temp, and one does barely anything.

Image Notes1. Ice packs add efficenty


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Image Notes1. Hose clamp

Image Notes1. I made a pretty kink!! It still works, thogh. It reduces the flow rate, making thsystem less efficent.

step 4:SpecsOk, this unit puts out aprox. 3200 BTU/hr on high.. It uses aprox. 200 surge/120 running watts(if not higher-these are only estimates), and it is better if you use it for sp

cooling(ex. blowing on you at night, chilling an area, etc.). See Updates (next step) for my idea for a possible modifacation(3).

Image Notes1. Pretty Logos/Warnings!

step 5:UpdatesOk, I have made some updates to it since I posted this instructible.

1. I cut the kink out, making the flow faster and it cools better.

2. I got another cooler that is bigger, more insulated, and doesn't leak(FINALLY! No more moldy carpets!)

3. I have obtained a wonderful radiator from the junk yard, in mint condition, and only for 15 bucks :) It's next summer's project, as it is freezing cold now!

4. I also added some safety labels, pic 3.

5. I added an internal coil of copper to the cooler. The returning water runs through the copper, transferring more heat. This method works a lot better than my originalmethod.

6. I insulated the water lines

7. I added more copper on the back of the fan for more heat exchange.

8. I made another version. http://www.instructables.com/id/home-made-air-conditioner-version-two/#
http://www.instructables.com/id/home-made-air-conditioner-version-two/#


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Image Notes1. cooler before modifacation...

Image Notes1. Now with out the kink! water flows much faster, improving performance.

Image Notes1. Pretty Logos/Warnings!

Image Notes1. I added more copper on the back to increase surface area.

Image Notes1. insulated water lines


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Comments

50 comments Add Comment view all 73 commen

McBlaise says: Feb 21, 2010. 12:07 AM REPdo you think its fine if I connect the clear tube into a bowl of water and then put it inside the refri erator?

hleon says: Mar 25, 2010. 9:53 AM REPyes, just dont kink the hoses in the door, and remember you have to keep the pump in there. the fr idge just dumps the heat back into the room, so theris no point in doing that if the fridge is insIDE

Pretty Idiot Productions says: Feb 4, 2010. 7:12 PM REPHow about bending the copper into the shape of a refrigerator condenser coil (more copper less space than a spiral and easier to work with) or actuallyripping the condenser coil off the back of an old fridge, and running the water through that?

www.busytrade.com/common/image.php

gHjM3W5T20YCS4e30 says: Jan 31, 2010. 3:01 AM REPsteam radiator + box fan = heater ?

hleon says: Dec 23, 2009. 7:27 AM REPDO NOT USE FOAM ICE CHESTS!!!!! Foam is very porous, and leaks water very well.

gHjM3W5T20YCS4e30 says: Jan 31, 2010. 2:59 AM REPplastic bag liner

hleon says: Dec 23, 2009. 7:28 AM REPThe kink i have fixed by re-routin the pipe throu h the fan.

bwpatton1 says: Jul 12, 2009. 5:51 PM REPHow well does this work? b/c I am thinking about building a larger version.

hleon says: Dec 23, 2009. 7:25 AM REPI got my radiator, so next summer im going to re-build this, and maybe have a peltier to cool the water.

hleon says: Jul 14, 2009. 1:29 PM REPit works fairly well.

jaded32 says: Jul 8, 2009. 9:49 PM REPi did this and it burned up 10lb block of ice in 10 hours
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hleon says: Dec 23, 2009. 7:24 AM REPWell, that is a very good rate. Mine burned up a 10 lb block of ice in 15 min. Hot, hot texas heat!

va123 says: Sep 8, 2009. 4:30 AM REPCool. I'm gonna go make one ut with a smaller fan like this one

fan.pdf(612x792) 80 KB

hleon says: Sep 8, 2009. 4:01 PM REPThis is a really small fan, even thogh it says high velocity, it puts out little air. It does spin fast, but barely any air. I would reccomend a slightly larger fanprefer lasko. They make all kinds of fans, and they are really good in terms of quality. I prefer the weathershield series for this project, as they include awater-resistant motor, and fci in the cord

lksmith says: Aug 8, 2009. 7:32 PM REPI wonder if aluminum tubing would cool better than copper since it is used in heatsinks and has a higher heat transfer rate?

Protoknowledge says: Aug 5, 2009. 2:45 PM REPHow about using the toilet tank? In the US all accept the most expensive low water toilets have a large enough tank. This would eliminate the cooler, thewater would circulate avoiding unwanted mold/bacteria, each flush would bring in cool water, and the pump and cold packs would reduce water usage.

Aeoleous says: Jul 27, 2009. 9:00 PM REPOkay I just built one of these things and the water f lowed through for a minute or so, then stopped. My best guess for why is because the pump I got wasonly 60gal/hr and couldn't force that much pressure through the system. But I saw this other guy's plan that didn't even require a pump and worked off of asiphon alone. The specs on my pump say it will only force enou h pressure to o 1 ft. but that doesn't seem to make much sense to me. Any help?

the crowing says: Aug 2, 2009. 11:56 AM REP60gal/hr is only a gallon per min (pretty slow, most bathroom sinks produce more power) your pump is most likely underpowered. When a pump saysthat it is rated for 1 foot that means that it is only powerful enough to push water through an appropriately sized pipe 1ft vertically. This is know as headpressure. Also take into consideration that the tube itself creates friction as the water flows through it and every bend and turn that the water has to travthrough causes resistance for the pump. That being said, your pump can only push water 1ft vertically before its power is overcome by gravity. If youhave any bends in the tube you will be able to push water less. I hope that clears up you concern.

hleon says: Aug 2, 2009. 8:18 AM REPsuck on the tube to give it a boost to start. Mine gives me the same problem every once in a while. suck on it untill you taste water. It should flow finefrom then on as long as it is plugged in. If it stops flowing when you stop sucking, then your pump is underpowered.

Bomb Guy says: Jul 31, 2009. 11:35 AM REPUse a bil e pump!

needsnumbers says: Jul 28, 2009. 8:06 PM REPInstead of the copper tube. Try going to a junkyard and picking up some small car radiators. They are more efficient so you can use a smaller fan andsmaller water pump. Also, if you have well water and a solar powered water pump, this could all be free if done right. There are laws preventing the return water into a well so consider that before jumping in and hacking away.

spydyr says: Jul 25, 2009. 10:52 AM REPI modified the position of the pip coil into more like a zig zag pattern. Got double the pipe coverage, then ran it through the corner so i wouldnt have to riskgetting a kink going over the top. Blades miss it by an inch. i get 1-2 degree difference than with a spiral.

nealfoster says: Jul 6, 2009. 10:03 PM REPi have all these parts lyin around my workshop, i'll ive it o when time allows, nice idea !

hleon says: Jul 14, 2009. 1:30 PM REPDude, You Go!
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Jason Bourne says: Jun 15, 2009. 3:40 PM REPthanks, i gonna bulid this and put it in my dad's shed( we work up their a lot and it gets REALLY HOT up their in the summer) i got the fan and cooler allready

spngebob111 says: Jun 2, 2009. 4:39 AM REPVery nice, So one end of the copper pipe connects to the pump through the viyl tube but what happens to the other end ?

hleon says: Jun 3, 2009. 3:57 PM REPit goes back to the cooler to get re-chilled via ice/ice packs.

asanaya says: May 28, 2009. 9:19 PM REPHey thanks probably use this in a garage or my shed and put it on a cart but great Instructable!!! :-)

hooty102 says: May 17, 2009. 11:31 AM REPHey, just to let you know, I threw this together in a couple hours yesterday afternoon during the heat and oh man! It RULES for being a quick and cheapalternative to buying a portable AC unit for my apartment. I've got pictures if you ever want to see how I did it.

hleon says: May 17, 2009. 1:01 PM REPthanks. I would like to see the pics. please post them ASAP

hooty102 says: May 17, 2009. 4:58 PM REPAttached are the ima es, I did thin s a bit differently, but it seems to work just fine.

hleon says: May 18, 2009. 3:52 PM REPwhat size is your copper tubin , and how much did u use? Did you test it with another a/c on, or by itself in a hot room?

hleon says: May 17, 2009. 1:07 PM REPPLEASE VOTE IF YOU WANT I ADDED TO EFFICIENCY CONTEST VOTE AT TOP THANKS H

lemonie says: May 14, 2009. 3:27 PM REPUsing water as a refrigerant does not make this eco-friendly in it's self. You're using un-eco energy to chill the ice packs, and copper, and un-eco energy todrive the fan / heat for a start. ? L
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10/11


hleon says: May 14, 2009. 4:05 PM REPthe fan motor itself does not produce much heat, or use much eletricity. 150 watts max, and compared to a 5000 btu ac that uses 568 watts, that is notbad. Pump uses about 75, for a total of 225 watts. I wonder what is ultemantly more efficent. My energy company produces the majority of its energy bsolar and wind power. Next, I do not blame you about the copper, now that I think about it. At least I didn't use a soldering iron, as that would leach leadinto the water. Ice packs are re-useable, so that doesn't waste water to make new ice. I also can use the condensate to water my garden, or use as afree sorce of cold refridgerent. I can also charge (aka "fill") the system with refridgerent my self, instead of having to call a service technition to come ancharge it for me. 8 gal. of water-about $3.50 USD I am totally sorry I didn't get this to you faster

lemonie says: May 14, 2009. 4:22 PM REPInteresting feature of the system: I've got another notification of a comment from you that goes: DUUUUUUUUUUUUUUDE! I did not know that. ...But I think you deleted that. (I don't know how things work around here sometimes) L

lemonie says: May 14, 2009. 4:16 PM REPHey, that's still a quick reply. I'm thinking of energy - the idea of "my tree house is too hot, I can use energy to cool it" is fundamentally wrong from agreen perspective: it's in a tree - no electricity should be required. Ideas about using energy where it's not really necessary are part of the generalenergy problem.

You could add a link to your power company, that would be useful if they are not generating mostly off e.g.coal.

It's all about shifting heat from one place to another, you are saving energy by moving the ice-pack between the freezer and your AC unit - humanheat-pump!

L

hleon says: May 16, 2009. 2:34 PM REPI have a 150 foot extention cord running to the treehouse. Some day when I get the money I am going to put solar panels on its roof, a batterybank below my cot, and a 5000 watt inverter to run things up there.

octopippo says: May 20, 2009. 3:14 PM REPoh how about a wind turbine

lemonie says: May 16, 2009. 2:59 PM REPSounds good, how much shade does it get from the tree? Today I saw electronic "whoopee cushions" for sale, how mad is that...? L

hleon says: May 17, 2009. 1:04 PM REPOK that is kinda scary. I think we need to put the money to better use, not make electronic "whoopee cushions".

lemonie says: May 17, 2009. 1:31 PM REPExactly, what happened to good old-fashioned simple fun? Halloween - what happens? Load of cheap junk (e.g. plastic pumpkins,witches' hats) fills the shops and kids buy it , wasted money, wasted resources, stifled-creativity - unpleasant. L

thetech101 says: May 5, 2009. 5:14 PM REPDid you put a copper coil on the back? This would be more efficient. Two layers of copper coild on each side would allow you to use it on high but mediumwould cool better. Of course this would be only for hotter climates (like mine). Great Instructable.

hleon says: May 11, 2009. 1:18 PM REPYes, I did.
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11/11

http://www instructables com/id/Hollis homemade AC/

hleon says: May 6, 2009. 1:04 P(removed by author or community request)

thetech101 says: May 6, 2009. 4:20 PM REPI understand. I am hoping to convince my school to build one of these. Several of the rooms have their own A/C units that are seperate from the maones. In my english class, this one went out and by the time my class gets in there, the temperature is 80+ (the current record is 84.5)!

hleon says: May 7, 2009. 4:02 PM REPI am going to pull the coils off of the next air handler my grandpa takes out. Or, if i don't get that whithen 6 months, I am going to use a radiator.

thetech101 says: May 7, 2009. 5:52 PM REPUnless it's a thin radiator, you'll need a very powerful fan. It would be better to find a radiator with the electric fan attached and build a standhold it. That's still a good idea.

Dipankar says: Apr 4, 2009. 5:36 PM REPWonderful ! Have you thou ht of usin car coolant instead of water? Will it not be more efficient than water? A ain I say Excellent.

ANDY! says: May 7, 2009. 6:49 PM REPI heard it sucks too. Waters the best.

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Hollis Homemade AC