Practical examples 4. Air at a temperature of 75 °C and a pressure of 400 kPa occupies a volume of 0.14 m3 initially. If this air is compressed during a reversible and adiabatic process by a piston to a pressure of 7 bar 1. Calculate the final volume 2. Calculate the final temperature 3. Calculate the work done on the air. Is it gained or lost? Take k = 1.4 4. Repeat the above if the air is expanded to 1 bar by a reversible and atmospheric process. I

Practical examples 4. Air at a temperature of 75 °C and a pressure of 400 kPa occupies a volume of 0.14 m3 initially. If this air is compressed during a reversible and adiabatic process by a piston to a pressure of 7 bar 1. Calculate the final volume 2. Calculate the final temperature 3. Calculate the work done on the air. Is it gained or lost? Take k = 1.4 4. Repeat the above if the air is expanded to 1 bar by a reversible and atmospheric process. I

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

Practical examples 4. Air
at a temperature of 75
°C and a pressure of 400
kPa occupies a volume of
0.14 m3 initially. If this air
is compressed during a
reversible and adiabatic
process by a piston to a
pressure of 7 bar 1. Calculate
the final volume 2. Calculate
the final temperature 3.
Calculate the work done on
the air. Is it gained or lost? .
Take k = 1.4 4. Repeat the
above if the air is expanded
to 1 bar by a reversible and
atmospheric process. I

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