Q3/ A piston-cylinder contain 5 kg of steam 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 energy transfer by work from the steam to the piston during the process, in kJ. Skg of steam

Q3/ A piston-cylinder contain 5 kg of steam 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 energy transfer by work from the steam to the piston during the process, in kJ. Skg of steam

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Q3/ A piston-cylinder contain 5 kg of steam 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 energy transfer by work from the steam to the piston during the process, in kJ.
S kg of
steam

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