=UPDATE=
a cool guy, Nathan Stratton over <A HREF="http://www.robotics.net/supercooler/index.html">here</A> has his own phase change setup. quite nice one..
here is his evaporator
<IMG SRC="http://www.robotics.net/supercooler/phase1-cooling.jpg" >
qoute : "In fact even rubber becomes a perfect conductor at absolute 0."
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OC'ing is my middlename