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A steam power plant operates on an ideal reheat-regenerative Rankine cycle with one reheater and two open feedwater heaters. Steam enters the high-pressure turbine at 5 MPa and 700°C and leaves the low-pressure turbine at 20 kPa. Steam is extracted from the turbine at 1500 and 300 kPa, and it is reheated to 600°C at a pressure of 500 kPa. Water leaves both feedwater heaters as a saturated liquid. (a) Show the cycle on a T-s diagram with respect to saturation lines, and (b) determine the enthalpies for all 12 state points. Condenser and feedwater heater exit states can be approximated as saturated liquid at their respective exit pressures (states 1, 3, and 5). 7. High-P Low-P turbine turbine Boiler Reheater 9. 1- у —2 (11) (12) (10) y Оpen Оpen FWH II FWH I Condenser 6 4 5 (3 (1 (P III) (P II PI

A steam power plant operates on an ideal reheat-regenerative Rankine cycle with one reheater and two open feedwater heaters. Steam enters the high-pressure turbine at 5 MPa and 700°C and leaves the low-pressure turbine at 20 kPa. Steam is extracted from the turbine at 1500 and 300 kPa, and it is reheated to 600°C at a pressure of 500 kPa. Water leaves both feedwater heaters as a saturated liquid. (a) Show the cycle on a T-s diagram with respect to saturation lines, and (b) determine the enthalpies for all 12 state points. Condenser and feedwater heater exit states can be approximated as saturated liquid at their respective exit pressures (states 1, 3, and 5). 7. High-P Low-P turbine turbine Boiler Reheater 9. 1- у —2 (11) (12) (10) y Оpen Оpen FWH II FWH I Condenser 6 4 5 (3 (1 (P III) (P II PI

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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**Title: Analysis of an Ideal Reheat-Regenerative Rankine Cycle with One Reheater and Two Open Feedwater Heaters** **Introduction:** In this educational module, we will explore the operation of a steam power plant utilizing an ideal reheat-regenerative Rankine cycle. The system comprises one reheater and two open feedwater heaters. Understanding this cycle is crucial for optimizing efficiency and performance in thermal power plants. **Process Description:** - **High-Pressure Turbine (High-P turbine):** Steam enters this turbine at 5 MPa and 700°C and is partially expanded. - **Steam Extraction and Reheat:** From the High-P turbine, steam is extracted at 1500 kPa and 300 kPa, before being reheated to 600°C at 500 kPa. - **Low-Pressure Turbine (Low-P turbine):** The reheated steam then expands in the Low-P turbine, eventually leaving at 20 kPa. - **Open Feedwater Heaters (FWH I & FWH II):** These heaters enhance efficiency by preheating the feedwater using steam extracted from the turbines. **Diagram Explanation:** **Schematic Representation:** 1. **Boiler:** Heats and converts water into high-pressure steam. 2. **Reheater:** Reheats the steam extracted from the High-P turbine to 600°C. 3. **High-Pressure (High-P) Turbine:** The steam expands, performing work. 4. **Low-Pressure (Low-P) Turbine:** Further expansion of reheated steam. 5. **Condenser:** Condenses exhaust steam from the Low-P turbine into liquid water. 6. **Open Feedwater Heater I (FWH I)** and **Open Feedwater Heater II (FWH II):** Use extracted steam to heat the feedwater. 7. **Pumps (PI, PII, PIII):** Increase the pressure of the feedwater at different stages to the required boiler pressure. **Cycle Notation:** - **State 1 to State 12:** Represent different thermodynamic states of the working fluid (water/steam) throughout the cycle. - **Mass Fractions (y, z):** Indicate division of steam extraction at specific points for reheating and feedwater heating. **Tasks:** (a) **T-s Diagram:** - Represent the cycle on a Temperature-Entropy (T-s) diagram, showcasing various states
Transcribed Image Text:**Title: Analysis of an Ideal Reheat-Regenerative Rankine Cycle with One Reheater and Two Open Feedwater Heaters** **Introduction:** In this educational module, we will explore the operation of a steam power plant utilizing an ideal reheat-regenerative Rankine cycle. The system comprises one reheater and two open feedwater heaters. Understanding this cycle is crucial for optimizing efficiency and performance in thermal power plants. **Process Description:** - **High-Pressure Turbine (High-P turbine):** Steam enters this turbine at 5 MPa and 700°C and is partially expanded. - **Steam Extraction and Reheat:** From the High-P turbine, steam is extracted at 1500 kPa and 300 kPa, before being reheated to 600°C at 500 kPa. - **Low-Pressure Turbine (Low-P turbine):** The reheated steam then expands in the Low-P turbine, eventually leaving at 20 kPa. - **Open Feedwater Heaters (FWH I & FWH II):** These heaters enhance efficiency by preheating the feedwater using steam extracted from the turbines. **Diagram Explanation:** **Schematic Representation:** 1. **Boiler:** Heats and converts water into high-pressure steam. 2. **Reheater:** Reheats the steam extracted from the High-P turbine to 600°C. 3. **High-Pressure (High-P) Turbine:** The steam expands, performing work. 4. **Low-Pressure (Low-P) Turbine:** Further expansion of reheated steam. 5. **Condenser:** Condenses exhaust steam from the Low-P turbine into liquid water. 6. **Open Feedwater Heater I (FWH I)** and **Open Feedwater Heater II (FWH II):** Use extracted steam to heat the feedwater. 7. **Pumps (PI, PII, PIII):** Increase the pressure of the feedwater at different stages to the required boiler pressure. **Cycle Notation:** - **State 1 to State 12:** Represent different thermodynamic states of the working fluid (water/steam) throughout the cycle. - **Mass Fractions (y, z):** Indicate division of steam extraction at specific points for reheating and feedwater heating. **Tasks:** (a) **T-s Diagram:** - Represent the cycle on a Temperature-Entropy (T-s) diagram, showcasing various states
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