Figure 32 Rankine Cycle With Real v.s. Ideal

Thermodynamics Heat Transfer and Fluid Flow Volume 1 of 3
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Thermodynamics SECOND LAW OF THERMODYNAMICS Figure 32 Rankine Cycle With Real v.s. Ideal From the T-s diagram (Figure 32) it can also be seen that if an ideal component, in this case the turbine, is replaced with a non-ideal component, the efficiency of the cycle will be reduced. This is due to the fact that the non-ideal turbine incurs an increase in entropy which increases the area under the T-s curve for the cycle. But the increase in the area of available energy (3-2-3’, Figure 32) is less than the increase in area for unavailable energy (a-3-3’-b, Figure 32). Figure 33 Rankine Cycle Efficiencies T-s Rev. 0 Page 89 HT-01

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