Feed Water Heater Energy Balance: Closed Systems

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  • Thread starter Thread starter ricky agarwal
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SUMMARY

The discussion focuses on the energy balance for closed feed water heaters in regenerative power plants. A specific scenario is presented involving steam at 30 bar and 300°C, with a condenser pressure of 0.08 bar and extraction points at 3.5 bar for the closed heater and 0.7 bar for the open heater. Participants emphasize the need for clarity in applying energy balance equations and calculating enthalpies around feed heaters. The goal is to determine the thermal efficiency of the plant while neglecting pump work.

PREREQUISITES
  • Understanding of thermodynamic principles, specifically energy balance equations.
  • Familiarity with steam properties at various pressures and temperatures.
  • Knowledge of regenerative power plant operations and configurations.
  • Ability to calculate thermal efficiency in thermodynamic cycles.
NEXT STEPS
  • Study the energy balance equations for closed and open feed water heaters.
  • Learn how to calculate enthalpies using steam tables or Mollier diagrams.
  • Research the impact of extraction pressures on thermal efficiency in regenerative cycles.
  • Explore case studies of thermal efficiency calculations in power plants.
USEFUL FOR

Engineers, thermodynamic analysts, and power plant operators seeking to optimize the performance and efficiency of regenerative power systems.

ricky agarwal
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energy balance for closed feed water heaters
 
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yes...i would like to know how to apply close feed water heaters along with open feed water heater and what are energy balance equation we can apply ? if possible make suitable figure and how to get enthalpies around feed heaters?
 
Apply them to what? You're going to need to be a whole lot more descriptive about what you are asking in order for us to be able to help you.
 
applying them to power plant
ok...i type the whole question for you sir... to make you understand the problem better...
A regenerative plant operates with steam supplied at 30 bar and 300 C,and condenser pressure of 0.08 bar. The extraction point for two heater (one close and one open)are at 3.5 bar and 0.7 bar resp. calculate the thermal efficiency of the plant neglecting pump work.
 

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