That stuff comes ready coiled I believe (It is phase change/refrigeration stuff?)...
Size to surface area compared to a HC it'll suck IMO, imagine the pressure drop!. You may be better off dunking it into a tank of water to get the heat 'leached' away faster than by air, then let natural(or forced) evaporation take care of the rest. But then why bother with the copper tube!
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Just my opinions...