(#7ppVI-14Prm) - A steam plant operating with an initial pressure of 1.70 MPa and 370 C temperature and exhaust to a heating system at 0.17 MPa. The condensate from the heating system is returned to the boiler at 65.5 C and the heating system utilizes from its intended purpose 90% of the energy transferred from the steam it receives. The turbine efficiency is 70 %. If the boiler efficiency is 80%, what is the cogeneration efficiency of the system in percent. Neglect pumpwork. Steam Properties: At 1.7 MPa and 370 C h = 3187.1 kJ/kg s = 7.1081 kJ/kg At 65 C h₁ = 274.14 kJ/kg At 1.7 MPa h = 483.20 kJ/kg hfg =2216.0 kJ/kg SĘ = 1.4752 kJ/kg Sfg = 5.7062 kJ/kg-K

(#7ppVI-14Prm) - A steam plant operating with an initial pressure of 1.70 MPa and 370 C temperature and exhaust to a heating system at 0.17 MPa. The condensate from the heating system is returned to the boiler at 65.5 C and the heating system utilizes from its intended purpose 90% of the energy transferred from the steam it receives. The turbine efficiency is 70 %. If the boiler efficiency is 80%, what is the cogeneration efficiency of the system in percent. Neglect pumpwork. Steam Properties: At 1.7 MPa and 370 C h = 3187.1 kJ/kg s = 7.1081 kJ/kg At 65 C h₁ = 274.14 kJ/kg At 1.7 MPa h = 483.20 kJ/kg hfg =2216.0 kJ/kg SĘ = 1.4752 kJ/kg Sfg = 5.7062 kJ/kg-K

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Question

2. (#7ppVI-14Prm) - A steam plant operating with an initial pressure of 1.70 MPa and 370 C temperature
and exhaust to a heating system at 0.17 MPa. The condensate from the heating system is returned to the
boiler at 65.5 C and the heating system utilizes from its intended purpose 90% of the energy transferred
from the steam it receives. The turbine efficiency is 70 %. If the boiler efficiency is 80 %, what is the
cogeneration efficiency of the system in percent. Neglect pumpwork.
Steam Properties:
At 1.7 MPa and 370 ☐ C
h = 3187.1 kJ/kg
At 1.7 MPa
he 483.20 kJ/kg
s = 7.1081 kJ/kg
At 65 C
h₁ = 274.14 kJ/kg
hfg = 2216.0 kJ/kg
SĘ = 1.4752 kJ/kg
Sfg = 5.7062 kJ/kg-K

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