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CHAPITRE 1: Notions de thermodynamique - Master 2 en ...

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5. Evolutions is<strong>en</strong>tropique, polytropique et<br />

r<strong>en</strong><strong>de</strong>m<strong>en</strong>t is<strong>en</strong>tropique<br />

Evolution polytropique<br />

Gestion <strong>de</strong> l’Energie et Environnem<strong>en</strong>t<br />

Hypothèses :<br />

• Evolution réversible<br />

• Gaz parfait<br />

• δQ = n dUavec<br />

• k = C te et γ = C te<br />

n =<br />

k - γ<br />

k -1<br />

=cte<br />

T<br />

T<br />

2<br />

1<br />

PV k 1<br />

=<br />

⎛<br />

⎜<br />

⎝<br />

p<br />

p<br />

2<br />

1<br />

⎞<br />

⎟<br />

⎠<br />

k-1<br />

k<br />

=<br />

⎛<br />

⎜<br />

⎝<br />

V<br />

V<br />

1<br />

2<br />

⎞<br />

⎟<br />

⎠<br />

k-<br />

<strong>CHAPITRE</strong> 1: <strong>Notions</strong> <strong>de</strong> <strong>thermodynamique</strong><br />

23

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