Maximum cooling efficency Answered
I am looking to build a compact cooling unit, sized under 12"x12"x12". I have seen and built 2 of the most common types of home made air conditioning units....
1) Run air across a block of ice or other frozen object.
2) Blow a fan through a whirl (or other pattern) of copper tubing and pump very cold water through.
So my question is which would offer more cooling capacity? The first option is cooling with Ice which is below freezing, with minimal surface area. The second option is cooling with cold water but still above 32 degrees, could potentially have more surface area.