ch05 - Chapter 5: The 2nd Law of Thermodynamics This 1000...

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Chapter 5: The 2 nd Law of Thermodynamics An Introduction This 1000 hp engine photo is courtesy of Bugatti automobiles.
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Spontaneous Processes Objects spontaneously tend to cool Fluids move from higher to lower pressure environments spontaneously Objects spontaneously fall from elevated positions Spontaneous processes allows occur in a predictable direction, and have the potential to produce work
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The Many Uses of the 2 nd Law • Predict process direction • Establish equilibrium conditions • Determine theoretical best performance • Evaluate factors limiting best performance • Define a temperature scale independent of properties • Develop means for property evaluation for derived properties, such as h and u
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Statements of the 2 nd Law Kelvin-Planck Statement It is impossible for any system to operate in a thermodynamic cycle and deliver a net amount of energy by work to its surroundings while receiving energy from a single thermal reservoir Clausius Statement
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This note was uploaded on 04/11/2009 for the course MAE 105a taught by Professor Marner during the Fall '08 term at UCLA.

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ch05 - Chapter 5: The 2nd Law of Thermodynamics This 1000...

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