a) Supplied steam to the turbine in kg/hr b) Total heat supplied to the boiler in KJ/hr
a) Supplied steam to the turbine in kg/hr b) Total heat supplied to the boiler in KJ/hr
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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![4. An industrial plant is to be designed based on the following requirements; 5000 KW output
and generator efficiency of 98%. Steam is extracted at the rate of 7.6 kg/sec at 0.2 MPa for
industrial use. Turbine inlet pressure is 1.2 MPa and temperature of 2600C, exhaust at 0.014
MPa. Brake turbine efficiency is 75%. Extracted and exhaust steam are returned to the boiler
as a liquid at 930C, respectively. Determine
a) Supplied steam to the turbine in kg/hr
b) Total heat supplied to the boiler in KJ/hr
At 1.2 MPa and 260C
h=2957.6 KJ/kg
S=6.8721 KJ/kg-K
At 93C; hf=389.54 KJ/kg
At 0.014 MPa
Sf=0.7366 KJ/kg-K; sfg = 7.2959 KJ/kg-K
hf=219.99 KJ/kg ; hfg = 2376.6 KJ/kg
At 0.2 MPa
1
sf = 1.55301 KJ/kg-K; sfg = 5.5970 KJ/kg-K
hf = 504.7 KJ/kg ; hfg = 2201.9 KJ/kg
At S1 S2 to 0.20 MPa ;
h2=2606.28 KJ/kg
At S3 S4 to 0.014 MPa
h3 = 2218.596 KJ/kg](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F13ef4e63-15ac-464b-969b-76651d39e9a9%2F38dec615-9f28-4a2c-bfe7-fc7e79e302ce%2F494k1ue_processed.jpeg&w=3840&q=75)
Transcribed Image Text:4. An industrial plant is to be designed based on the following requirements; 5000 KW output
and generator efficiency of 98%. Steam is extracted at the rate of 7.6 kg/sec at 0.2 MPa for
industrial use. Turbine inlet pressure is 1.2 MPa and temperature of 2600C, exhaust at 0.014
MPa. Brake turbine efficiency is 75%. Extracted and exhaust steam are returned to the boiler
as a liquid at 930C, respectively. Determine
a) Supplied steam to the turbine in kg/hr
b) Total heat supplied to the boiler in KJ/hr
At 1.2 MPa and 260C
h=2957.6 KJ/kg
S=6.8721 KJ/kg-K
At 93C; hf=389.54 KJ/kg
At 0.014 MPa
Sf=0.7366 KJ/kg-K; sfg = 7.2959 KJ/kg-K
hf=219.99 KJ/kg ; hfg = 2376.6 KJ/kg
At 0.2 MPa
1
sf = 1.55301 KJ/kg-K; sfg = 5.5970 KJ/kg-K
hf = 504.7 KJ/kg ; hfg = 2201.9 KJ/kg
At S1 S2 to 0.20 MPa ;
h2=2606.28 KJ/kg
At S3 S4 to 0.014 MPa
h3 = 2218.596 KJ/kg
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