Answered: er is the working fluid in a…

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

Water is the working fluid in a supercritical ideal reheat cycle. Steam enters the first-stage
turbine at 320 bar, 640°C, and expands to 120 bar. After being reheated it enters the
second-stage turbine at a temperature of 600°C, where is expands to a pressure of 0.06
bar. The steam is then condensed until it is a saturated liquid.
Question:
Determine:
(a) The thermal efficiency of the cycle
(b) The back work ratio of the cycle

Expert Solution

Step 1

$G i v e n : P r e s s u r e a n d t e m p e r a t u r e a t t u r b i n e i n l e t, T_{1} = 640 ° C P_{1} = 320 b a r T e m p e r a t u r e a t t h e o u t l e t o f t h f i r s t t u r b i n e, P_{2} = 120 b a r T e m p e r a t u r e a t w h i c h i t e n t e r s s e c o n d t u r b i n e, T_{3} = 600 ° C P r e s s u r e a t w h i c h i t e x p a n d s, P_{4} = 0.06 b a r$ T

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