13. 1.5 kg of air at an initial condition of 3.5 bar and 180°C expands adiabatically and without friction to a final condition of 1.3 bar. Calculate the amount of workdone and the change in internal energy of the gas during expansion. Assume y- 1.4 and R-287 J/kg K for air.

13. 1.5 kg of air at an initial condition of 3.5 bar and 180°C expands adiabatically and without friction to a final condition of 1.3 bar. Calculate the amount of workdone and the change in internal energy of the gas during expansion. Assume y- 1.4 and R-287 J/kg K for air.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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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.

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13. 1.5 kg of air at an initial condition of 3.5 bar and 180°C expands adiabatically and without friction to a
final condition of 1.3 bar. Calculate the amount of workdone and the change in internal energy of the gas during
expansion. Assume y 1.4 and R-287 J/kg K for air.

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