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Source for cooling? (fwd)



---------- Forwarded message ----------
Date: Thu, 18 Oct 2007 21:22:34 -0400
From: Nick Andrews <nicothefabulous@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Source for cooling?

I got a dorm-size fridge, Avanti brand off of the local freecycle group for free.  It was purchased but quit working after a few months by a local office.  They cut the cord and got their money back, and I got the fridge.  I spliced a cord on to check it out and guess what?  It has no compressor, but it does have a 4" fan central in the back inside which runs air over an aluminum heat sink.  Peltier-fridge!  

I opened the back, and there is a PWM power supply (SMPS) to run the interior fan and two fans at the bottom of a bigger heat sink on the back of the unit.  Bad design has the fans blowing the air up through the heat sink and onto the power supply.  It has an interior light.  I need to look for a sticker to see how much power it uses...

The point is, though, that these may be a source of good-size Peltier junctions for possible use of cooling IGBTs or other semiconductors.

Nick A