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ME200Overview

ME200Overview - ME200 Overview 1 KE KE2 KE1 m(V22 V12 2 PE...

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ME200 Overview 2 1 2 2 2 1 2 1 2 1 2 1 2 1 , ( ) ( ) 1 ( ) 2 ( ) V Quasi Equilibrium quasi static V cycle H C H C PowerCycle E E Q W for aclosed system dE Q W for ac KE KE KE m V V PE PE PE mg z z E U PE KE W pdV W Q Q losed system dt Area under thecurv Q e Q       0 2 ) 1 ( mod C H C H Q Q the ndL Q Q awofTher ynamics 12/10/2010 1 ME200 Course Overview Prof. Mongia
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Re max ma R ax e x m 1 . . 1 1 1 0( 1 1 2 mod ) PowerCycle f Cycle Heat PumpCycle C cyc C H H revcycle C le cycle C f Cycl H H C C e H is finite is finite Q W W the ndLawofTher yna T Q T T T mic T T T T s Q 12/10/2010 2 ME200 Course Overview Prof. Mongia
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int. int. 2 int. int. 1 int. int. 2 2 int. 2 1 1 1 2 2 1 1 ( ) , ( ) ( ) ( ) C H rev C H rev rev rev rev rev rev b b Q Q Q Q dS dS T T T T Q TdS Q TdS area under the curve Q Q However Q Q or T T Q Q S S T T Q S S Entropy production f T 0( ) j j j or aclos Q dS for steady state dt T ed system 3 12/10/2010 ME200 Course Overview Prof. Mongia
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2 2 1 1 ( ) ( ) , 0 ( ) 0 ( ) 0 0 0 b b cyc b cycle cyc l le e Q S Q T no irreversibility irreversibility S Entropy production for aclosed system T For acycle L impossib H Q T le S   Clausius inequality 12/10/2010 4 ME200 Course Overview Prof. Mongia
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12/10/2010 ME200 Course Overview Prof. Mongia 5 Open System (Control Volume) : cv i e i e i e i e Volume flow rate
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