ME2121 – Engineering Thermodynamics

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Brief Review: Carnot Principle and Kelvin Scale Carnot Principle: All reversible heat engines operating between the same two reservoirs have the same efficiency. This means: Ratio heat transfer from hot and to cold reservoirs is equal to the ratio of the absolute temperatures of the two reservoirs. This also leads to Kelvin scale of absolute temperature. © Copyright 2005 Prof. Arun S. Mujumdar. <strong>ME2121</strong> - Entropy I - Introduction (ASM) 20
Clausius Inequality (Cont’d) Q T R R Q T Above eqn is Eqn.5.18 in textbook. for a reversible cycle. Eliminating δQ R from the two relations above yields W c T R Q T dE Let the system undergo a cycle while the cyclic device undergoes an integral number of cycles. c © Copyright 2005 Prof. Arun S. Mujumdar. <strong>ME2121</strong> - Entropy I - Introduction (ASM) 21
Page 1 and 2: ME2121 - Engineering Thermodynamics
Page 3 and 4: Review Chapter 5-2 nd Law Concepts/
Page 5 and 6: Direction of Energy Conversion •
Page 7 and 8: Entropy and Disorder • The Entrop
Page 9 and 10: Entropy of Crystalline Substance Th
Page 11 and 12: INTRODUCTION (Cont’d) We start wi
Page 13 and 14: Clausius Inequality (Cont’d) Clau
Page 15 and 16: Brief Review: Reversibilities etc R
Page 17 and 18: Clausius Inequality (Cont’d) To d
Page 19: Clausius Inequality (Cont’d) The
Page 23 and 24: Clausius Inequality (Cont’d) It t
Page 25 and 26: Clausius Inequality (Cont’d) Ther
Page 27 and 28: Entropy (Cont’d) The term entropy
Page 29 and 30: Entropy (Cont’d) Note that entrop
Page 31 and 32: Internally Reversible Isothermal He
Page 33 and 34: Internally Reversible Isothermal He
Page 35: Closure Study chapter 6 of textbook

ME2121 – Engineering Thermodynamics

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