Lecture8-Thermo5_secondlaw

Lecture8-Thermo5_secondlaw - MPO551:Lecture8 Thermodynamics...

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MPO 551: Lecture 8 Thermodynamics Second Law of Thermodynamics/Clausius Clapeyron (Chapter 3, Wallace and Hobbs)
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Entropy Per unit mass And ds=0 for adibatic processes. Hence adiabats are also isentropes. Note that this only applies to reversible transformations
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Thermodynamic theory of hurricanes Theoretical efficiency:  T s T o T s T s =27C T o = 75C See Emanuel (1991) on our class website. adiabat adiabat Isotherm (Heat source) Isotherm (Heat sink)
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Increasing destructiveness of tropical cyclones over the past 30 years (Emanuel 2005)–paper on our class website But this was just the beginning of an ongoing (and heated debate)…. .
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1. Equipartition of energy assign 1/2kT of energy to every degree of freedom Degrees of freedom= f (molecule) For monoatomic molecules f=3, because in a 3-D space they can move to 3 directions For polyatomic molecules, the molecule can also rotate and vibrate so f can be >3 nRT f kT f U 2 1 2 1
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2. What if f>3? Because C
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This note was uploaded on 01/08/2012 for the course MPO 551 taught by Professor Zhang,c during the Summer '08 term at University of Miami.

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Lecture8-Thermo5_secondlaw - MPO551:Lecture8 Thermodynamics...

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