650°c 10 MPA 0gmpa 7 bar 60kPa=0.6 bar in
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 # 1
Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the turbine at
10 MPa, 6500C, and the condenser pressure is (60 kPa =0.6 bar). Steam expands through the first-stage
turbine to 0.7 MPa and then is reheated to 650oC. Determine for the cycle
650°c
10 MPA
LO0 bar
7bar
2.
60kPa=0.6 bar
a. The rate of heat addition,
per kg of steam entering the first-stage turbine.
b. Pump work
c. Turbine work in stage 1 and stage 2
The thermal efficiency
d.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4a0fa22e-b4a7-45f7-a1b7-59314c24d19d%2F395ef77e-9603-414a-83ce-1267ebc65ec0%2F7047mnq_processed.png&w=3840&q=75)
Transcribed Image Text:Question # 1
Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the turbine at
10 MPa, 6500C, and the condenser pressure is (60 kPa =0.6 bar). Steam expands through the first-stage
turbine to 0.7 MPa and then is reheated to 650oC. Determine for the cycle
650°c
10 MPA
LO0 bar
7bar
2.
60kPa=0.6 bar
a. The rate of heat addition,
per kg of steam entering the first-stage turbine.
b. Pump work
c. Turbine work in stage 1 and stage 2
The thermal efficiency
d.
Expert Solution
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Step 1
A Rankine reheat cycle is given in which steam is first heated at 10 MPa and 650 oC and then it is expanded to 0.7 MPa. After the first expansion the steam is again heated to 650 oC. Then it is again expanded to 60 kPa.
Obtain the following data from steam table,
Step 2
From steam table obtain the value of enthalpy at state 2 and 4.
(a) Calculating rate of heat addition form the first stage of turbine:
For process 5-6,
The rate of heat addition is given as,
(b) The pump work is:
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