1. CHAPTER 6
Entropy

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FIGURE 6-1 The system considered in the development of the Clausius inequality.
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FIGURE 6-5 A cycle composed of a reversible and an irreversible process.
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FIGURE 6-6 The entropy change of an isolated system is the sum of the entropy changes of its components, and is never less than zero.
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FIGURE 6-10 The entropy of a pure substance is determined from the tables (like other properties).
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6. FIGURE 6-11 Schematic of the T-s diagram for water.
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FIGURE 6-11 Schematic of the T-s diagram for water.
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FIGURE 6-16 On a T-S diagram, the area under the process curve represents the heat transfer for internally reversible processes.
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8. FIGURE 6-19 The T-S diagram of a Carnot cycle (Example 6–6).
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FIGURE 6-19 The T-S diagram of a Carnot cycle (Example 6–6).
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FIGURE 6-36 The isentropic relations of ideal gases are valid for the isentropic processes of ideal gases only.
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FIGURE 6-37 The use of Pr data for calculating the final temperature during an isentropic process.
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FIGURE 6-39 The use of vr data for calculating the final temperature during an isentropic process (Example 6–10).
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12. FIGURE 6-43 Schematic and T-s diagram for Example 6–12.
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FIGURE 6-43 Schematic and T-s diagram for Example 6–12.
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FIGURE 6-45 P-v diagrams of isentropic, polytropic, and isothermal compression processes between the same pressure limits.
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FIGURE 6-46 P-v and T-s diagrams for a two-stage steady-flow compression process.
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FIGURE 6-49 The h-s diagram for the actual and isentropic processes of an adiabatic turbine.
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FIGURE 6-51 The h-s diagram of the actual and isentropic processes of an adiabatic compressor.
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17. FIGURE 6-53 Schematic and T-s diagram for Example 6–15.
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FIGURE 6-53 Schematic and T-s diagram for Example 6–15.
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FIGURE 6-54 The h-s diagram of the actual and isentropic processes of an adiabatic nozzle.
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19. FIGURE 6-61 Mechanisms of entropy transfer for a general system.
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FIGURE 6-61 Mechanisms of entropy transfer for a general system.
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FIGURE 6-70 Graphical representation of entropy generation during a heat transfer process through a finite temperature difference.
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FIGURE 6-76 The electrical energy consumed by a motor is inversely proportional to its efficiency.
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FIGURE 6-77 The efficiency of an electric motor decreases at part load.
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