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(Solved): Ideal Rankine Cycle \( \cdots \) Efficiency to be realized Steam is the worki ...



Ideal Rankine Cycle \( \cdots \) Efficiency to be realized
Steam is the working fluid in an ideal Rankine cycle (i.e. no irreh-s diagra???????

Ideal Rankine Cycle \( \cdots \) Efficiency to be realized Steam is the working fluid in an ideal Rankine cycle (i.e. no irreversibilities present). Your aim is to realize a thermal efficiency of \( 30 \% \). The condenser should operate at pressure \( p_{2}=p_{3}=0.1 \) bar. The quality at the outlet of the turbine, i.e. at state 2 , is given as \( \mathrm{x}_{2}=0.9 \). Assume that saturated liquid exits the condenser. a) Determine pressure \( p_{1} \), in bar, and the temperature \( T_{1} \), which is necessary to achieve the desired efficiency, by using the attached h-s diagram. Mark both states, i.e. 1 and 2 clearly! b) Taking an arbitrary isentropic efficiency into account, sketch the real expansion process in the turbine in the attached h-s diagram. Assumptions: Assume that the turbine operates under isentropic conditions and that the enthalpy at state 3 is approximately equal to the enthalpy at state 4 . h-s diagra


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a) Starting at the inlet to the first turbine stage, the pressure is 8.0 MP
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