Feed Water Heater Energy Balance: Closed Systems

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Discussion Overview

The discussion centers on the energy balance for closed feed water heaters, particularly in the context of power plants. Participants explore the application of closed and open feed water heaters, as well as the relevant energy balance equations and enthalpy calculations involved.

Discussion Character

  • Technical explanation, Homework-related, Experimental/applied

Main Points Raised

  • One participant requests clarification on how to apply closed feed water heaters alongside open feed water heaters, specifically asking for energy balance equations and enthalpy calculations.
  • Another participant emphasizes the need for a more detailed description of the application context to provide meaningful assistance.
  • A later post specifies a scenario involving a regenerative power plant with given steam conditions and extraction points, asking for the calculation of the plant's thermal efficiency while neglecting pump work.

Areas of Agreement / Disagreement

Participants have not reached a consensus, as the discussion includes requests for clarification and additional details about the problem being posed.

Contextual Notes

Limitations include the need for more specific information regarding the application of the heaters and the assumptions underlying the energy balance calculations.

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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