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Q4. An ideal steam reheat cycle operates between pressure of 40 bar and 40 millibar, with a superheat temperature of 400°C. The first expansion is carried out to the point where the steam is dry saturated. The steam is then reheated at constant pressure to the original superheat temperature.

There is 6 K sub-cooling in the condenser and the feed pump work cannot be ignored.

(a) Sketch the cycle on a Temperature- specific entropy diagram. (4)

(b) Determine EACH of the following:

(i) The quality of the steam entering the condenser; (4)

(ii) The cycle efficiency; (5)

(iii) The specific steam consumption. (3)