A steady-state system for producing power consist of a pump, heat exchanger and a turbine. Water steam power plant operates on an ideal reheat- regenerative Rankine cycle. Steam enters the high- pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to 500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Determine the entropy generation associated with the reheating and regeneration processes. Assume a source temperature of 1800 K.

A steady-state system for producing power consist of a pump, heat exchanger and a turbine. Water steam power plant operates on an ideal reheat- regenerative Rankine cycle. Steam enters the high- pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at this pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to 500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Determine the entropy generation associated with the reheating and regeneration processes. Assume a source temperature of 1800 K.

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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Question

Thermodynamics question, please include schematic and T-s diagram

A steady-state system for producing power consist of a pump, heat exchanger and a turbine. Water
steam power plant operates on an ideal reheat-regenerative Rankine cycle. Steam enters the high-
pressure turbine at 10 MPa and 550°C and leaves at 0.8 MPa. Some steam is extracted at this
pressure to heat the feedwater in an open feedwater heater. The rest of the steam is reheated to
500°C and is expanded in the low-pressure turbine to the condenser pressure of 10 kPa. Determine
the entropy generation associated with the reheating and regeneration processes. Assume a source
temperature of 1800 K.

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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Step 1: To determine the the entropy generation associated with the reheating and regeneration.

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Step 2: Drawing the T-S diagram of the Rankine cycle.

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Step 3: Calculating the enthalpy and entropy values at all the states:

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Step 4: Calculating the entropy generation associated with the reheating and regeneration.

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