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Q4) A Carnot cycle uses saturated water and steam as the working fluid and operates between pressures of 0.045 bar and 44 bar.

An ideal Rankine Cycle using steam operates between the same pressure as the Carnot cycle above. The steam is dry saturated at the beginning of the expansion, and saturated liquid leaves the condenser.

a) Determine the Carnot thermal efficiency of the cycle. (2)

b) Sketch the Rankine cycle on a T-s diagram. (2)

c) Determine the Rankine cycle thermal efficiency. (12)