Mechanical Engineering Thermodynamics - Lec 19, pt 2 of 5: Ideal Rankine Cycle
Ron Hugo・8 minutes read
The Rankine cycle, the most popular Vapor power cycle, consists of a pump, boiler, turbine, and condenser, with the fluid moving through various states to produce work and heat transfer, ultimately aiming for high thermal efficiency. The cycle involves pumping fluid from State 1 to State 2, heating it in the boiler from State 2 to State 3 to produce superheated steam for the turbine, which then operates to produce work before the condenser converts the steam back to liquid at State 4.
Insights
- The Rankine cycle, a prevalent Vapor power cycle, includes a pump, boiler, turbine, and condenser, showcasing a systematic process of fluid transformation.
- Calculating thermal efficiency in the Rankine cycle involves precise enthalpy values for components, enabling a comprehensive assessment of work and heat transfer for evaluating overall efficiency, emphasizing the importance of detailed thermodynamic analysis.
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Recent questions
What is the Rankine cycle?
A thermodynamic cycle used in vapor power plants.
How does the Rankine cycle work?
Fluid is pumped, heated, expanded, and condensed.
What are the components of the Rankine cycle?
Pump, boiler, turbine, condenser.
How is the efficiency of the Rankine cycle calculated?
By evaluating specific enthalpy values for each component.
What is the purpose of the condenser in the Rankine cycle?
To convert steam back to liquid form.
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Summary
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Efficiency of Rankine Cycle in Vapor Power
- The most popular Vapor power cycle is the Rankine cycle, consisting of a pump, boiler, turbine, and condenser.
- In the Rankine cycle, the fluid is pumped from State 1 to State 2, then heated in the boiler from State 2 to State 3, producing superheated steam for the turbine.
- The turbine operates from State 3 to State 4, producing work as the fluid drops in pressure, ideally ending on the saturated Vapor line at State 4.
- The condenser then converts the steam back to liquid, rejecting thermal energy to the environment.
- The thermal efficiency of the Rankine cycle can be calculated using specific enthalpy values for each component, allowing for the evaluation of work and heat transfer to determine overall efficiency.
