rendement_e.py

Created by alten01

Created on May 05, 2025

487 Bytes

n = abs (
transfert utile a utilisateur
/transfert necessaire a la
machine )

si les echanges sont recus par le
systeme alors ils sont positifs

si Q refroidit la source froide
= frigo

Wtot>0 machine frigorifique

Q2=Qfroid
Q1=Qchaud

efficacite frigo
p=Q2/W=-Q2/Q1+Q2=-1/(Q1/Q2+1)
inegalite de clausius
Q1/Q2=<-T1/T2 donne
p=<1(T1/T2-1) =>pmax=T2/T1-T2

efficacite pompe a chaleur
e=-Q1/W=Q1/Q1+Q2=1/1+Q2/Q1
clausius
Q2/Q1=>-T2/T1 donne
e=<1/(1-T2/T1)=>emax=T1/T1-T2

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