Fine. I'll make my own air conditioner.

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SUMMARY

The forum discussion revolves around the DIY assembly of a cooling apparatus using copper tubing and a fan, based on a design from the University of Waterloo. The setup involves a garbage can filled with ice water, where cold water circulates through the copper tubing to cool the air. Key concerns include managing condensation from the copper tubing and ensuring efficient airflow to optimize cooling without excessive humidity. Participants suggest various modifications, such as using a drip shield and adjusting airflow rates to control condensation levels.

PREREQUISITES
  • Understanding of basic thermodynamics related to heat transfer.
  • Familiarity with DIY plumbing concepts, particularly with copper tubing.
  • Knowledge of airflow dynamics and humidity control.
  • Experience with siphoning techniques and water circulation systems.
NEXT STEPS
  • Research "DIY air conditioning systems" for alternative designs and methods.
  • Learn about "condensation management techniques" in cooling systems.
  • Explore "thermodynamic principles" to optimize heat transfer efficiency.
  • Investigate "airflow measurement tools" to assess and adjust airflow rates effectively.
USEFUL FOR

DIY enthusiasts, HVAC hobbyists, and individuals seeking cost-effective cooling solutions for personal spaces will benefit from this discussion.

  • #31
Sorry to hear about the escaped sheep Danger. :rolleyes: Where abouts do you think she got to? :rolleyes: Just curious.o:)

MIH, if the loop is closed, with a pump to move the transfer medium (the water) through the connecting piping and two heat exchangers, you will only need one reservoir, but it's elevation won't help you throttle down the flow. You will need to either reduce the flow rate of the pump, induce restriction on the outlet of the pump (add a throttling valve), or add restriction in the form of longer or smaller piping. Height has no impact on a closed loop other than the length of piping it adds, and the pump will function better at a lower elevation (greater NPSH).
 
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  • #32
Artman said:
Sorry to hear about the escaped sheep Danger. :rolleyes: Where abouts do you think she got to? :rolleyes: Just curious.o:)
I strongly suspect that W sent her off to the wilds. She's very jealous. :frown:
 
  • #33
Danger said:
I strongly suspect that W sent her off to the wilds. She's very jealous. :frown:
That's what you think? :rolleyes: o:) :smile: :rolleyes: I'm sure that must be it...and not somebody happen along who just happens to have a certain fondness for sheep, in a perfectly innocent way and...Yeah I'm sure that's what happened. o:)

MIH, I've been thinking about this system. In a closed loop system, throttling would only be important to control condensation formation and the amount of cooling. If condensation isn't an issue, just let the flow be what it is because the cold water return will be going back to the reservoir and pumped back through, not lost. Further more, why use ice? Use an insulated container of water, and load it with those plastic ice blocks that you refreeze. You would never have to dump the water, just grab the plastic ice blocks and stick them back
in the freezer. The water in the container could be salt water and won't effect the inside of your coils (which could be fresh water that won't hurt your pump or coils as much).

One other thing, you should consider replacing whatever outlet you have this system plugged into with a GFCI outlet.
 
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  • #34
Artman said:
I'm sure that must be it...and not somebody happen along who just happens to have a certain fondness for sheep, in a perfectly innocent way and...Yeah I'm sure that's what happened.
If I thought for one second that you know where I live, you would have been my first suspect. :biggrin:
 
  • #35
I'd suggest a small globe or needle valve at the junction where the ice water is entering your coil/evaporator. It'll work, somewhat, as an expansion valve and give proportional control of the flow.
 
  • #36
Consider the swamp cooler designs...Several years ago on a hot Georgia night I had the same idea to invent a $50.00 Airconditioner. The hot air could be transferred using the Swamp cooler type effect. Swamp coolers are the next best thing to getting cool air using water anyway. But, ofcourse the colder the water , the colder the air.

Tis a great Idea...perhaps you will be the one to do it..I am sure Walmart will be very interested in selling $50.00 Airconditioners too..
 
  • #37
berkeman said:
If you can put a little portable refrigerator just outside your window (not inside the room), then you could make a closed-system AC unit by running the copper tubing into the freezer portion of the fridge. That would be a lot better system if you can figure out where to put the small fridge. Like if you have a porch just outside your window (and an outlet oustide on the porch)...

That would use ssssssssssoooooooooooo much energy. I don't recommend this at all.
 

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