03 énergie puissance rendement Flashcards

1
Q

Relation entre puissance et énergie ?

A

E = P x t

E(j) - P(W) - t(s)

ou

E(Wh) - P(W) - t(h)

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2
Q

Puissance mécanique

(translation)

A

P = F x V

P(W) - F(N) - V(m/s)

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3
Q

Puissance mécanique

(rotation)

A

P = C x ω

P(W) - C(N.m) - ω(rad/s)

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4
Q

Puissance hydraulique

A

P = Q x p

P(W) - Q(m3/s) - p(pa)

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5
Q

Puissance électrique

A

P = U x I

P(W) - U(V) - I(A)

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6
Q

Puissance thermique

A

P = T x S

S = flux thermique

P(W) - T(K) - S(W/K)

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7
Q

Le rendement

A
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8
Q

Le rendement global d’un système en série

A

ηglobal = η1 x η2 x … x ηn

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