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.

Steam Power Plant Cycle Analysis

This page presents a comprehensive problem involving a steam power plant operating on a Rankine cycle. The problem provides specific conditions for the cycle and requires the calculation of various parameters.

Given conditions:

• P₁ = P₄ = 7000 kPa
• T₁ = 550°C
• P₂ = P₃ = 20 kPa
• Turbine efficiency (ηₜ) = 0.75
• Pump efficiency (ηₚ) = 0.75
• Power output = 100,000 kW

The problem requires calculating: a. Steam rate b. Heat transfer rate in the boiler c. Heat transfer rate in the condenser d. Thermal efficiency of the plant

Example: The solution demonstrates the use of isentropic efficiencies for both the turbine and pump, showing how real processes deviate from ideal conditions.

The solution process involves:

1. Analyzing each state point in the cycle
2. Calculating actual enthalpy values using isentropic efficiencies
3. Determining the steam rate based on the given power output
4. Computing heat transfer rates and overall thermal efficiency

Highlight: This problem illustrates the application of boiler steam problems rankine cycle efficiency calculations in a complex power plant scenario.

The detailed solution provides insights into power plant boiler steam problems rankine cycle efficiency and demonstrates the use of thermodynamic tables and equations.