Half a croissant, on a plate, with a sign in front of it saying '50c'
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Under-sink Peltier Device

Hot, cold, & super-cold running water
 
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Sometimes the cold water out of the tap isn’t cold enough. In such cases, flip on the under-sink Peltier device. It cools the water as it flows through the pipe so it comes out icy cold.
AO, Apr 28 2003

Refrigerated Drinking Fountains http://www.drinking-fountain.net/
Baked, except the Peltier thing. [Worldgineer, Oct 21 2004]

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       are you pleased to see me? - hmmm, no.
po, Apr 28 2003
  

       I forgot to mention, you can also hook it up to your shower.
AO, Apr 28 2003
  

       I noticed :)
po, Apr 28 2003
  

       Why a peltier device, not a traditional heat pump? How large would it have to be to have sufficient capcacity? Where would the waste heat go?
Worldgineer, May 09 2003
  

       [world]   

       Peltier instead of compressor because it is smaller, quieter, and only runs when you need it (rather than keeping a reservoir of cold water).   

       The size would be a 12-inch square peltier sandwiched between two coils of pipe. The whole thing would be about 4 inches thick.   

       The hot side is connected to a cold water loop that goes back to the water heater.
AO, May 12 2003
  

       I'm picturing a traditional 1-lever sink faucet that you turn to the right for hot water, aim toward you for normal-cold, and aim left for super-cold. Although I love any product that uses heat rejection effectively (your cold water loop annotation), I think it may be more marketable with air cooled heat rejection to avoid plumbing issues.   

       I think this is a well though out, viable and interesting idea. I wonder why I'm the only one that's noticed this idea (except po).
Worldgineer, May 12 2003
  

       I think there are certain terms that get automatically ignored these days, including “peltier”, “piezo”, and “wankel.”
AO, May 12 2003
  

       So my idea for a wankle piezoelectric pletier device is not worth posting? Damn, the thing creates it's own energy.
Worldgineer, May 12 2003
  
      
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