A Tutorial on Thermodynamics - University of Illinois at Urbana ...
A Tutorial on Thermodynamics - University of Illinois at Urbana ...
A Tutorial on Thermodynamics - University of Illinois at Urbana ...
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Why not use more air cooling? Volume <strong>of</strong> air involved is huge. He<strong>at</strong> capacity per molecule is (7/2)k B He<strong>at</strong> capacity per unit volume is(7/2)(P/T)≈1kJ/m 3 -K <strong>at</strong> ambient c<strong>on</strong>diti<strong>on</strong>s With ∆T=10 K, requires nearly 10 5 morevolume <strong>of</strong> air than evapor<strong>at</strong>ing w<strong>at</strong>er. Enormous he<strong>at</strong> exchangers, fans, high capitalcosts.Mark A. Shann<strong>on</strong> http://w<strong>at</strong>ercampws.uiuc.edu7
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