Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.2 undergoes a throttling process to 120 lbf/in.² as it passes through a trap into the open feedwater heater. The feedwater leaves the closed feedwater heater at 1400 lbf/in.² and a temperature equal to the saturation temperature at 500 lbf/in.2 The remaining steam is reheated to 900°F before entering the second-stage turbine, where it expands to 120 lbf/in.² Some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.² Saturated liquid exits the open feedwater heater at 120 lbf/in.² The remaining steam expands through the third-stage turbine to the condenser pressure of 2 lbf/in.2 The turbine stages and the pumps each operate adiabatically with isentropic efficiencies of 85%. Flow through the condenser, closed feedwater heater, open feedwater heater, steam generator, and reheater is at constant pressure. The net power output of the cycle is 1.5 x 10° Btu/h. Let To = 60°F. Po = 14.7 lbf/in.2 The table below provides steady-state operating data for the cycle. State h (Btu/lb) s (Btu/lb-ºR) 1 2 1493 1375 1.609 1.627

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

See similar textbooks

Related questions

Question

12. determine: a. the mass flow rate of steam entering the first stage of the turbine, in lb/h b. the rate of energy input, in Btu/h, to the working fluid passing through the steam generator. c. the magnitude of the exergy output, in Btu/h, of the net power output. d. the magnitude of the energy loss in the condenser, in Btu/h e. the exergy destroyed in the turbine, in Btu/h f. the exergy destroyed in the open feedwater heater, in Btu/h.

Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater.
Steam enters the turbine at 1400 lbf/in.² and 1000°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted
to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.2 undergoes a
throttling process to 120 lbf/in.² as it passes through a trap into the open feedwater heater.
The feedwater leaves the closed feedwater heater at 1400 lbf/in.² and a temperature equal to the saturation temperature at 500
lbf/in.2 The remaining steam is reheated to 900°F before entering the second-stage turbine, where it expands to 120 lbf/in.² Some of
the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.² Saturated liquid exits the open feedwater
heater at 120 lbf/in.²
The remaining steam expands through the third-stage turbine to the condenser pressure of 2 lbf/in.2 The turbine stages and the
pumps each operate adiabatically with isentropic efficiencies of 85%. Flow through the condenser, closed feedwater heater, open
feedwater heater, steam generator, and reheater is at constant pressure. The net power output of the cycle is 1.5 x 10⁹ Btu/h. Let To =
60°F, Po= 14.7 lbf/in.2 The table below provides steady-state operating data for the cycle.
State h (Btu/lb) s (Btu/lb-ºR)
1493
1
2
1375
1.609
1.627

1
2
3
4
5
6
7
8
9
10
11
12
13
1493
1375
1375
1466
1315
1049
94.12
94.54
312.5
317.5
449.6
449.6
449.6
1.609
1.627
1.627
1.698
1.725
1.805
0.1751
0.1758
0.4917
0.4979
0.6491
0.6491
0.663

Expert Solution

Step by step

Solved in 7 steps with 7 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions