Q1 A five kilograms of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is a, 2709.9 kJ/kg. to state 2, where u, - 2659.6 kJ/kg. During the process, there is heat transfer to the steam with a magnitude of 80 kJ. Also, a paddle wheel transfers energy to the steam by work in the amount of 18.5 kJ. There is no significant change in the kinetic or potential energy of the steam. Determine the en- ergy transfer by work from the steam to the piston during the process, in kJ.
Q1 A five kilograms of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy is a, 2709.9 kJ/kg. to state 2, where u, - 2659.6 kJ/kg. During the process, there is heat transfer to the steam with a magnitude of 80 kJ. Also, a paddle wheel transfers energy to the steam by work in the amount of 18.5 kJ. There is no significant change in the kinetic or potential energy of the steam. Determine the en- ergy transfer by work from the steam to the piston during the process, in kJ.
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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Transcribed Image Text:QI A five kilograms of steam contained within
a piston-cylinder assembly undergoes an expansion from state
1, where the specific internal energy is u, 2709.9 kJ/kg.
to state 2, where uz = 2659.6 kJ/kg. During the process, there
is heat transfer to the steam with a magnitude of 80 kJ. Also,
a paddle wheel transfers energy to the steam by work in the
amount of 18.5 kJ. There is no significant change in the
kinetic or potential energy of the steam. Determine the en-
ergy transfer by work from the steam to the piston during
the process, in kJ.
5 kg of
steam
"pe?
Ww-18.5 k
Q= +80 kJ
" = 2709.9 kkg
g = 2059.6 kkg
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