Wk_6_Recitation2 - October 17 Recitation Topics Reversible...

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October 17 Recitation Topics: Reversible and Irreversible Processes and Entropy Thermal energy reservoir Performance measure = desired output/required input ( η th and COP) Kelvin-Planck and Clausius Statements of the Second Law Internally vs externally irreversible Carnot Efficiency and Carnot Cycle Thermodynamic temperature scale Entropy and the Second Law Clausius Inequality S is a property dS= δ Q/T) int rev S = ( ∫δ Q/T) b + σ , for closed system Second Law σ ≥ 0 S universe 0 for the universe Recitation #1 For the following conditions and devices operating between two reservoirs of temperature T H and T C indicate whether the devices are operating in reversible, irreversible, or impossible cycles. Justify your answers by appropriate discussion.
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