In a nuclear power plant dry saturated steam at $30$bar enters a high pressure turbine and expands isentropically to a pressure of $2\mathrm{.}5$bar. At this pressure the steam is passed through a moisture separator which removes all the liquid. Saturated vapour leaves the separator and is expanded isentropically to $0\mathrm{.}04$bar in a lower pressure turbine, while the saturated liquid leaving the separator is returned via a feed$-$pump to the boiler. The condensate leaving the condenser at $0\mathrm{.}04$bar also returned

to the boiler via a second feed$-$pump.

Calculate the dryness fraction at the outlets of high and low pressure turbines, and also the cycle efficiency taking account of the feed$-$pump terms.

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To calculate the dryness fraction at the outlets of the highpressure turbine and the lowerpressure t... View the full answer