Rankine Cycle Efficiency
Ideal Rankine cycle thermal efficiency from the four cycle enthalpies - the steam-plant / WHR / ORC benchmark.
Rankine efficiency
31.03%
Net cycle work
990.0kJ/kg
Boiler heat input
3,190.0kJ/kg
Formula, assumptions, and limits
Shipboard steam-plant Rankine cycles typically 28–34 %. WHR Rankine systems 14–22 % (lower pressure). ORC (R245fa, R1233zd) cycles 8–14 % on exhaust-gas heat.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Turbine inlet (sup-heated steam) | kJ/kg | IAPWS | |
| Turbine exit (wet steam) | kJ/kg | IAPWS | |
| Condensate at pump suction | kJ/kg | IAPWS | |
| Compressed feedwater | kJ/kg | IAPWS |