Rankine Cycle Analysis with Given Power Output

This page presents a more complex Rankine cycle problem, where the cycle operates between 10,000 kPa and 10 kPa, with steam entering the turbine at 600°C and delivering 80,000 kW of power.

The problem requires calculating:

1. Steam rate (kg/s)
2. Heat transfer in the condenser (kJ/s)
3. Heat transfer rate in the boiler (kJ/s)
4. Cycle efficiency

Definition: Steam rate - The mass flow rate of steam through the cycle, typically measured in kilograms per second.

The solution process involves:

1. Determining thermodynamic properties at each state point
2. Calculating the work done by the turbine and pump
3. Computing the steam rate based on the given power output
4. Determining heat transfer rates in the boiler and condenser

Highlight: The calculated steam rate is 56.0822 kg/s, demonstrating the application of boiler capacity kg/hr calculations in a practical scenario.

This problem showcases the application of Rankine cycle efficiency of steam power plant calculations in a real-world context.

Ideal Rankine Cycle with Reheat

This page introduces the concept of an ideal Rankine cycle with reheat, presenting a P-v diagram to illustrate the process.

Key points:

1. The cycle includes two turbine stages: high-pressure and low-pressure
2. Steam is reheated between the two turbine stages
3. The process aims to improve overall cycle efficiency

Definition: Reheat - A process in steam power cycles where steam is returned to the boiler for additional heating after partial expansion in the high-pressure turbine.

The P-v diagram shows:

• Compression in the pump (3-4)
• Heat addition in the boiler (4-1)
• Expansion in the high-pressure turbine (1-2)
• Reheat process (2-5)
• Expansion in the low-pressure turbine (5-6)
• Condensation (6-3)

Highlight: The reheat process in the Rankine cycle can significantly improve the overall thermal efficiency of the power plant.

This page provides a visual representation of the Rankine cycle P-v diagram, helping to understand the thermodynamic processes involved in steam power generation with reheat.