4. (a) MPa and 150°C, (Fig. below). The steam is losing heat to the surrounding air at 100 kPa and 25°C at a rate of 480 kw, and the kinetic and potential energy changes are negligible. Determine (a) the actual power output, (b) the maximum possible power output, (c) the second-law efficiency, (d) the exergy destroyed, and (e) the exergy of the steam at the inlet conditions. Steam enters a turbine steadily at 5MPA and 550°C at a rate of 6.25 kg/s and exits at 0.2 5 MPa 480 kw 550 C STEAM TURBINE

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Please answer all what is asked or 3 subparts based on honor code.

4. (a)
Steam enters a turbine steadily at 5MPa and 550°C at a rate of 6.25 kg/s and exits at 0.2
MPa and 150°C, (Fig. below). The steam is losing heat to the surrounding air at 100 kPa and 25°C at a
rate of 480 kw, and the kinetic and potential energy changes are negligible. Determine (a) the actual
power output, (b) the maximum possible power output, (c) the second-law efficiency, (d) the exergy
destroyed, and (e) the exergy of the steam at the inlet conditions.
5 MPa
480 kW
550 C
STEAM
TURBINE
T= 25°C
Po= 100 kPa
0.2 MPa
150°C
Transcribed Image Text:4. (a) Steam enters a turbine steadily at 5MPa and 550°C at a rate of 6.25 kg/s and exits at 0.2 MPa and 150°C, (Fig. below). The steam is losing heat to the surrounding air at 100 kPa and 25°C at a rate of 480 kw, and the kinetic and potential energy changes are negligible. Determine (a) the actual power output, (b) the maximum possible power output, (c) the second-law efficiency, (d) the exergy destroyed, and (e) the exergy of the steam at the inlet conditions. 5 MPa 480 kW 550 C STEAM TURBINE T= 25°C Po= 100 kPa 0.2 MPa 150°C
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