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  • Users: Vig16
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  1. Vig16

    How to cool water fast!

    Would I actually have to have the PCM's "in" the liquid? Couldn't the PCM just be outside of the thin-walled Silicone tubing that the hot water is running through?
  2. Vig16

    How to cool water fast!

    Sorry to bring up this old thread again, but I just came up with another idea. What if I used a Phase Change Material (PCM)? I found this material (http://microteklabs.com/pdfs/MPCM-37D%20Product%20Data%20Sheet.pdf) which would put me right in the 35-38°C range and used 1.25g of the PCM (since...
  3. Vig16

    Where to get some Trimethylolethane and Lauric Acid?

    Thanks!
  4. Vig16

    Where to get some Trimethylolethane and Lauric Acid?

    I'm not sure if this is the correct forum to ask this question in, but does anyone know where I can order some Trimethylolethane or Lauric Acid from? I'm looking to get these two phase change materials for a project we're working on at work and haven't had much luck! Thanks so much for any...
  5. Vig16

    Fan/Wind/Air to Cool Water

    So the ~250 W would still be the answer I'm looking for?
  6. Vig16

    Fan/Wind/Air to Cool Water

    I had another thread started on the topic of cooling water, but I figured I'd start a different one since I'm exploring a whole new avenue. I'm trying to cool 8 ounces of 70 deg C water down to 38 deg C. I want to do this all in 2 minutes, but with as low a cost as possible. I was thinking of...
  7. Vig16

    How to cool water fast!

    I was just thinking of something else with cooling the water. What if I used air, such as a fan, to be blown through the water? What calculations do you think would be necessary to see how much air I'd need to get the to cool the water?
  8. Vig16

    How to cool water fast!

    Compositepro - I like that idea, but how long does it take to cool the water for that volume? bithkits - I heard the same thing from one of the other engineers here yesterday, which kind of gave me second thoughts about that. Also, it seems to be a little more expensive than what we were...
  9. Vig16

    How to cool water fast!

    IR - Since I can't open the TEC, how would I go about getting the serpentine path to touch the cold face of the TEC? Compositepro and macmet - I like those ideas too, so I'm going to give yours and IR's a shot to see which is best for my application! Thanks!
  10. Vig16

    How to cool water fast!

    IR - am I able to take the TEC's apart for do my own configurations for the labyrinth? Or is there a different way I should do that?
  11. Vig16

    How to cool water fast!

    Oh, OK...thanks!
  12. Vig16

    How to cool water fast!

    LOL, so did I forget to convert something in the way I arrived to 249 W?
  13. Vig16

    How to cool water fast!

    ione - Shouldn't it be ~249 W since it's going to be over 2 minutes?
  14. Vig16

    How to cool water fast!

    IR - I had one question about your amount of energy it takes to cool the water 32 degrees C. You said it takes 253 W to do so; however, when I do the calculations, I only get ~134 Watts. Since 4.186 J is needed to drop water by 1dC, I did 4.186*32=133.952. And since 1 watt=1 Joule/1 sec, I...
  15. Vig16

    How to cool water fast!

    IR - Thanks for your advice! I totally understand what you mean about running them in series as there won't be much cooling at the start of the maze. I have enough wiggle room to try both configurations, but I'll give the series configuration a shot first...thanks again for all your help...
  16. Vig16

    How to cool water fast!

    So when you say face-to-face, should the hot side of one TEC face the cold side of the other TEC while the water tube runs through a "maze" of some sort and just have the TEC's programmed to have the hot side that contacts the water tube activated to heat the initial flow of water that's going...
  17. Vig16

    How to cool water fast!

    vpl - that works too, but I'm looking to have it all done at once, so the final product will have 38dC water when you take the cup/bottle/container away.
  18. Vig16

    How to cool water fast!

    Well, I think it would probably be needed once every 2-3 hours. I don't have a problem with getting the heat up to 70dC, I just need to find a way to get the end product down to 38dC. Would a TEC do this for me?
  19. Vig16

    How to cool water fast!

    Thanks for all the replies again, guys! IRstuff - are TE coolers what's used in PCR to get the temperature to drop so quickly? I read about PCR, but didn't see anything relating to TE cooler. And the container cannot be moved from under the nozzle to a cooler in an alumininum container. I...
  20. Vig16

    How to cool water fast!

    Mint - I heat it up to kill some contaminants in whatever I'm trying to heat up. ione - I'm not trying to do it to a big volume of water, ~8 ounces.

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