review - Review of Thermodynamics 1st and 2nd Law...

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1 Review of Thermodynamics 1 st and 2 nd Law Applications Conservation of Energy: The 1 st Law of Thermodynamics KE PE U Q W Δ + Δ + Δ = Change in amount of energy contained within the system during some time interval = Net amount of energy transferred in across the system boundary by heat transfer during the time interval - Net amount of energy transferred out across the system boundary by work during the time interval
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2 Alternative Forms of the Energy Balance Differential Form: dE Q W δ δ = Time Rate Form: dE Q W dt = First law for Cycles First law for an arbitrary system: Δ E=Q-W For a cycle, Δ E cycle =0 since it begins and ends at the same state. Thus cycle cycle Q W =
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