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+1 vote
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in Physics by (67.9k points)

A piston/cylinder setup contains air at 100 kPa, 400 K which is compressed to a final pressure of 1000 kPa. Consider two different processes

(i) a reversible adiabatic process and

(ii) a reversible isothermal process. Show both processes in P-v and a T-s diagram. Find the final temperature and the specific work for both processes. 

1 Answer

+1 vote
by (63.3k points)
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Best answer

C.V. Air, control mass of unknown size and mass.

(i) For this process the entropy equation reduces to:

s2 – s1 = 0 + 0 

so we have constant s, an isentropic process.

The relation for an ideal gas, constant s and k becomes

 

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