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Homebrew Air Conditioning for Under $25

inkey string writes "Summer has arrived, and I've been busy slowly overheating in my student house without central air. I decided to put my thermodynamics classes to work however, and produced this ~24$ homebrew air conditioner. It'll cool a room to a comfortable level in 15-20 mins, and will run for a few hours on a garbage pail full of water. It's cheap, environmentally friendly (just fire the waste water off to your garden), and makes a good one hour project for a quiet evening."

40 of 832 comments (clear)

  1. Its going to be hot soon by Anonymous Coward · · Score: 5, Funny

    I hope his server isn't in his room, because all the thermodynamics courses in the world wont teach you about slashdotting.

    1. Re:Its going to be hot soon by Anonymous Coward · · Score: 3, Funny

      This article is so ignorant I almost took the time to create a Slashdot account to complain about it.

    2. Re:Its going to be hot soon by Kujila · · Score: 4, Funny

      How can this story be slashdot-worthy if the fan isn't even running Linux!

  2. And you can place it... by peter_gzowski · · Score: 3, Funny

    ...right next to your webserver.

    --
    "Now gluttony and exploitation serves eight!" - TV's Frank
    1. Re:And you can place it... by Tackhead · · Score: 4, Funny
      > ...right next to your webserver.

      By placing the garbage pail full of water in your garden, you ensure that within five minutes of the link going live on Slashdot, you'll have several gallons of piping-hot vegetable soup!

    2. Re:And you can place it... by Seumas · · Score: 2, Funny

      And with the money he saved, he can finally afford a maid.

  3. Air Conditioning for $1500/month by Geekboy(Wizard) · · Score: 4, Funny

    Move to San Francisco.

    Today it hit 70F, and the news stations are talking about "the heatwave of 2005".

    1. Re:Air Conditioning for $1500/month by failure-man · · Score: 5, Funny

      Whiny bastard Californians . . . .

      I repeat my assertion that since 31 Octobher, 1995 (the last Oingo Boingo show) the state has had no redeeming value.

    2. Re:Air Conditioning for $1500/month by MrAnnoyanceToYou · · Score: 2, Funny

      Californians buy our water, we don't mind.
      Californians raise our power rates by buying ours, we don't mind.
      Californians make more money, we don't mind.
      Californians drive up here and buy houses at HUGE prices, we don't mind.
      Californians steal our nice Oregon springs leaving us more drenched than usual, we want better environmental laws or blood.

    3. Re:Air Conditioning for $1500/month by kfg · · Score: 3, Funny

      Mark Twain once famously noted that the worst winter he ever spent was his summer in San Francisco.

      KFG

    4. Re:Air Conditioning for $1500/month by Anonymous Coward · · Score: 5, Funny

      I repeat my assertion that since 31 Octobher, 1995 (the last Oingo Boingo show) the state has had no redeeming value.

      Hey! California has amazing redeeming value. Without it, all those idiots would be living with the rest of us!

    5. Re:Air Conditioning for $1500/month by Anonymous Coward · · Score: 5, Funny

      You misspelled Texas

    6. Re:Air Conditioning for $1500/month by Anonymous Coward · · Score: 2, Funny
      Actually, it has a major redeeming value. It gives us a place to live away from envious losers.

      Is that any way to talk about the French?

    7. Re:Air Conditioning for $1500/month by kfg · · Score: 2, Funny

      "I'm not dead yet. . .I'm getting better." -- Mark Twain

      KFG

    8. Re:Air Conditioning for $1500/month by harkabeeparolyn · · Score: 2, Funny

      "A noble spirit embiggens the smallest man."
      --- Mark Twain

    9. Re:Air Conditioning for $1500/month by lostchicken · · Score: 4, Funny

      Shit. As a native Texan living in California, I feel I must object to one of these insults. Unfortunately, I can't quite decide which one isn't true...

      --
      -twb
  4. Siphoning by sxltrex · · Score: 2, Funny
    It certainly does suck!


    sorry...

  5. Canada by Geekboy(Wizard) · · Score: 4, Funny

    Dude, you're in Canada. Open the window.

    Now you just have to figure out how to keep the snow off of the carpet.

    1. Re:Canada by KillerBob · · Score: 2, Funny

      I'd do that, but it'd make running the air conditionner even more expensive.... It hit 35'C with 70% humidity today, making it feel like 42'C (107'F).

      Can't wait until August, when it really gets hot. :)

      --
      If you believe everything you read, you'd better not read. - Japanese proverb
    2. Re:Canada by caferace · · Score: 3, Funny
      We make snow at 28 degrees all the time.

      Where did you say you were from again?

    3. Re:Canada by Anonymous Coward · · Score: 1, Funny
      I guess you mean 28 degrees celsius/centigrade? At 28 degrees fahrenheit I think it would be quite easy to make snow.

      I am impressed with your intellectual acumen and would like to subscribe to your newsletter.

    4. Re:Canada by pipingguy · · Score: 2, Funny


      We were driving through Brossard Sunday looking for Pont Victoria (most people in the Montreal area end up looking for this stealth bridge at one time or another) and passed one of those digital readout advertising signs that was flashing time and temp. It said -11 degrees C.

    5. Re:Canada by Anonymous Coward · · Score: 1, Funny

      Yes, but we've already established that everywhere ELSE is unimportant in comparison to the States.

    6. Re:Canada by Barlo_Mung_42 · · Score: 2, Funny

      Holy crap, you're right!
      How do you keep your igloos standing at that temp?

  6. Beer by supe · · Score: 5, Funny

    I think that his garbage can full of ice water should at least have a few cold beers. I mean really, he's in college!

  7. thermodynamics? by csimicah · · Score: 4, Funny

    Wait... this retard thinks that using his fridge, inside his house, to produce ice... then cooling with the ice... is going to make his house cooler? He could accomplish the exact same thing by just opening his freezer door, right? I hope this kid's Thermo professor sees this and kicks him out of school.

    1. Re:thermodynamics? by Anonymous Coward · · Score: 1, Funny

      Wehere does it say he is using _his_ fridge?

    2. Re:thermodynamics? by csimicah · · Score: 2, Funny

      Huh... does U-Waterloo water also come with ice chunks and frozen bottles of water in it, as pictured on the site? That must be hell on the pipes!

  8. Re:Minor nit by v1 · · Score: 2, Funny

    If he's into thermodynamics he should realize the reason this is appearing to be a cheap way to AC is he's ignoring the need for the supply of cold water. (ice) Wouldn't he cut out the middleman here (and thus, theoretically increase efficiency of the system) by simply leaving his freezer door open with a fan in front of it?

    I suppose it might still work running on cold tap-water, but then that could make for an expensive water bill. Although not nearly as much as running your freezer with its compressor all day long...

    --
    I work for the Department of Redundancy Department.
  9. Re:To be pedantic... by Anonymous Coward · · Score: 1, Funny

    I don't know whats worse, the idiot parent poster who doesn't RTFA (or knows what he is talking about) or seemingly endless replies saying the same damned thing one after the other as if they were the first to point out the error and should get some sort of brownie points.

  10. Re:Minor nit by tomhudson · · Score: 5, Funny
    It's not a minor nit-pick. Its a major flaw. His setup is so much more inefficient than even a cheap ($100) AC.

    If he wants to be cheap, why not just take an old fridge ($20), remove the doors, and use the fridge to block the door to his room? Leave the coils facing out into the hallway, and his room becomes cooler - plus the light will always be on, so he can see wtf he's doing.

  11. Re:Environmentally friendly? by LurkerXXX · · Score: 3, Funny
    So, if it is environmentally friendly, just where did the "ice water" come from?

    Ice Pixies magic it up, so he doesn't have to run a refridgerator/freezer to make the ice. Because, you know, those actually produce heat inside the house, which he is trying to get rid of... Pixies. Yeah, that's it.

  12. Re:Minor nit by Anonymous Coward · · Score: 1, Funny
    If he wants to be cheap, why not just take an old fridge ($20), remove the doors, and use the fridge to block the door to his room? Leave the coils facing out into the hallway, and his room becomes cooler - plus the light will always be on, so he can see wtf he's doing.


    Redneck Airconditioning!
  13. Re:Minor nit by Infinityis · · Score: 2, Funny

    Wait, but you haven't heard the best part--if you get some firewood, a match, and a fan, you too can have a really cheap heater for the winter weather!

    First person to do it and put up a website about it will win the rights to a blurb on the front page of Slashdot!

  14. Re:Environmentally friendly? by LurkerXXX · · Score: 2, Funny

    Ottawa? Don't the OpenBSD folks hang out there occasionally? You might not have any penguins, but maybe there are some blowfish. :)

  15. Does it run Lennox? by XpirateX · · Score: 2, Funny

    Yeah, but does it run Lennox?

  16. The guy is a moron by tangledweb · · Score: 2, Funny

    I think my way is much more efficient and more environmentally friendly. I just hooked my freezer up to my perpetual motion machine and leave the door open. Infinite cold air, and no puddle of wasted ice water outside my window.

  17. Low hanging fruit... by Anonymous Coward · · Score: 1, Funny

    Isn't there some irony in that Waterloo has met its waterloo? No, I suppose its perfectly apt.

  18. Re:addressing all the flames/legitimate concerns.. by Anonymous Coward · · Score: 1, Funny

    Perhaps you meant "I suggest that you start with capital letters" or "I suggest starting with capital letters"... It might be a good idea to choose a single qualifier, as well. Beginning one clause with "if" and the following with "perhaps" just doesn't read nicely.

    Clumsy grammar is not terribly persuasive. Perhaps you can join him in his English studies - that'd likely help with the quality assurance needed for your technical writing. ;)