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Thermodynamics Notes21

Thermodynamics Notes21 - ME 311 FALL 2007 CHAPTER...

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ME 311 THERMODYNAMICS S. Masutani FALL 2007 CHAPTER 8 (continued) The ideal Rankine cycle consists of internally reversible processes. We determined earlier that ) = = b a b a rev rev TdS Q TdS Q . . int . . int δ Or, in terms of a unit mass flowing through the system: = = = b a rev b a b a rev Tds m Q Tds m Tds m Q . . int . . int & & & & & Graphically, T s in T 3 2’ 1’ out T m Q in & & m Q out & & 4 ) ( 3 ' 2 . . int s s T m Q out rev out = & & ) ( 4 ' 1 . . int s s T m Q in rev in = & & where ) ( 4 ' 1 ' 1 4 s s Tds T in Note that the net work out in net Q Q W & & & = 1
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