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Condenser pressure: Boiler pressure: Turbine inlet temperature: Compressed liquid phase: 2.5 kPa 3 MPa 700 °C Assume Incompressible Liquid (ICL) Problem #1: Assume the cycle uses only the basic, ideal Rankine cycle processes (no irreversibilities, no feedwater heaters, etc.) and perform the following tasks: a) draw a schematic for the power plant, b) draw the T-s diagram with state labels corresponding to your schematic, c) analyze the cycle and determine thermal efficiency. Problem #2: Using your cycle from problem #1, add an open feedwater heater to the cycle and repeat steps a-c from problem #1. Note that you will have to select (i.e. design) the pressure of your open feedwater heater and then determine the steam extraction ratio (v) required such that the feedwater heater exit condition is exactly saturated liquid. Problem #3: Repeat problem #2 but using a closed feedwater heater. Note that for CFWH the feedwater exit state is compressed liquid at the boiler pressure and saturation temperature of the extracted steam.

Condenser pressure: Boiler pressure: Turbine inlet temperature: Compressed liquid phase: 2.5 kPa 3 MPa 700 °C Assume Incompressible Liquid (ICL) Problem #1: Assume the cycle uses only the basic, ideal Rankine cycle processes (no irreversibilities, no feedwater heaters, etc.) and perform the following tasks: a) draw a schematic for the power plant, b) draw the T-s diagram with state labels corresponding to your schematic, c) analyze the cycle and determine thermal efficiency. Problem #2: Using your cycle from problem #1, add an open feedwater heater to the cycle and repeat steps a-c from problem #1. Note that you will have to select (i.e. design) the pressure of your open feedwater heater and then determine the steam extraction ratio (v) required such that the feedwater heater exit condition is exactly saturated liquid. Problem #3: Repeat problem #2 but using a closed feedwater heater. Note that for CFWH the feedwater exit state is compressed liquid at the boiler pressure and saturation temperature of the extracted steam.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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This problem is about "An Ideal Rankine Cycle with an Open Feedwater heater. But the pressure entering the feedwater is given. They want us to select the appropriate pressure value for the system which will then yield the best efficiency. I'd appreciate some help with this.  Thank you

Condenser pressure: Boiler pressure: Turbine inlet temperature: Compressed liquid phase: 2.5 kPa 3 MPa 700 °C Assume Incompressible Liquid (ICL) Problem #1: Assume the cycle uses only the basic, ideal Rankine cycle processes (no irreversibilities, no feedwater heaters, etc.) and perform the following tasks: a) draw a schematic for the power plant, b) draw the T-s diagram with state labels corresponding to your schematic, c) analyze the cycle and determine thermal efficiency. Problem #2: Using your cycle from problem #1, add an open feedwater heater to the cycle and repeat steps a-c from problem #1. Note that you will have to select (i.e. design) the pressure of your open feedwater heater and then determine the steam extraction ratio (v) required such that the feedwater heater exit condition is exactly saturated liquid. Problem #3: Repeat problem #2 but using a closed feedwater heater. Note that for CFWH the feedwater exit state is compressed liquid at the boiler pressure and saturation temperature of the extracted steam.
Transcribed Image Text:Condenser pressure: Boiler pressure: Turbine inlet temperature: Compressed liquid phase: 2.5 kPa 3 MPa 700 °C Assume Incompressible Liquid (ICL) Problem #1: Assume the cycle uses only the basic, ideal Rankine cycle processes (no irreversibilities, no feedwater heaters, etc.) and perform the following tasks: a) draw a schematic for the power plant, b) draw the T-s diagram with state labels corresponding to your schematic, c) analyze the cycle and determine thermal efficiency. Problem #2: Using your cycle from problem #1, add an open feedwater heater to the cycle and repeat steps a-c from problem #1. Note that you will have to select (i.e. design) the pressure of your open feedwater heater and then determine the steam extraction ratio (v) required such that the feedwater heater exit condition is exactly saturated liquid. Problem #3: Repeat problem #2 but using a closed feedwater heater. Note that for CFWH the feedwater exit state is compressed liquid at the boiler pressure and saturation temperature of the extracted steam.
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