Transfert Thermique Flashcards

(5 cards)

1
Q

Loi thermique de Newton

A

Pour un système incompressible et lors d’un transfert conducto convectif, liquide(Te) vers solide(T)

Φ = h S (Te-T)

H: coefficient d’échange en W/K/m2
S: surface en m2

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2
Q

Loi de Stefan Boltzmann

A

Pour un corps noir:

Psurf = σ*T4

σ: constante de Stefan
P en W/m2

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3
Q

Φ totale

A

Φ = Psurf *S

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4
Q

Combinaison des deux forrmules

A

Φ= Q/t

Φ= hS(Te-T)

mcdT/dt = hS(Te-T)

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5
Q

Constante de temps t

A

t= mc/hS

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