The Superheat Rankine Cycle

Process flow diagram of a basic Rankine Vapor Power Cycle.
In a

Superheat Rankine Cycle

, the boiler produces superheated vapor. This helps maintain a high quality vapor-liquid mixture at the turbine effluent.
Because the high pressure isobar slopes upward outside of the two-phase envelope,QHincreases by a larger percentage than QC increases. This is true as long as the turbine effluent is not superheated.
The result is an increase in the

thermal efficiency

of the cycle and an increase in the quality of the turbine effluent !
TS Diagram showing the effect of modifying the basic Rankine Vapor Power Cycle so that the boiler produces superheated vapor.
QC
QH
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Ch 9, Lesson C, Page 3 - The Superheat Rankine Cycle