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

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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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