An open feedwater heater is a direct-contact heat exchanger used in vapor power plants. Shown in the figure below are operating data for an open feedwater heater with H2O as the working fluid operating at steady state, where T1 = 41 °C.   Ignoring stray heat transfer from the outside of the heat exchanger to its surroundings and kinetic and potential energy effects, determine the rate of entropy production, in kW/K.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An open feedwater heater is a direct-contact heat exchanger used in vapor power plants. Shown in the figure below are operating data for an open feedwater heater with H2O as the working fluid operating at steady state, where T1 = 41 °C.
 
Ignoring stray heat transfer from the outside of the heat exchanger to its surroundings and kinetic and potential energy effects, determine the rate of entropy production, in kW/K.
P2 =3 bar
X2 = 0.92
-2
P3 = 3 bar
Saturated liquid
m3 = 80 kg/s
Орen
feedwater
T1, P1 = 3 bar
heater
Transcribed Image Text:P2 =3 bar X2 = 0.92 -2 P3 = 3 bar Saturated liquid m3 = 80 kg/s Орen feedwater T1, P1 = 3 bar heater
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