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? Efficiency suffers: 0.1% per degree C. Air temper<strong>at</strong>ure is not always as cold asavailable w<strong>at</strong>er. Worse in hot/clim<strong>at</strong>es wheremore air-c<strong>on</strong>diti<strong>on</strong>ing is needed. Additi<strong>on</strong>al thermal resistance because he<strong>at</strong>transfer is not as effective: basic property <strong>of</strong>effusivity (square root <strong>of</strong> the product <strong>of</strong>thermal c<strong>on</strong>ductivity and he<strong>at</strong> capacity perunit volume) is smaller by a factor <strong>of</strong> 100. Trade-<strong>of</strong>f: do you want to reduce use <strong>of</strong>H 2 O or CO 2 emissi<strong>on</strong>?Mark A. Shann<strong>on</strong> http://w<strong>at</strong>ercampws.uiuc.edu8
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