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Werktuigbouw formules: Thermodynamica Hoofdwetten
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Thermodynamica Hoofdwetten

0e Hoofdwet thermodynamica


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Massabehoud in stromingssystemen:

sum{N}{i=1}{m_i} = 0

1e Hoofdwet thermodynamica

Gesloten systemen:

dU = dQ + dW

Stationair stromingssyteem:

- sum{N}{i=i}{~^~}(h_i + 1/2 {v_i}^2 + g z_i) m_i= Q + W_shaft

Kringlopen:

oint{}{}{dq} + oint{}{}{dw} = 0

2e Hoofdwet thermodynamica

Gesloten systemen:

Algemeen geldig: dS >= {dQ}/T Reversibel: dS = {dQ}/T en dW = -P dV

Stationair stromingssysteem:
s_2 - s_1~>=~q/T

Kringlopen:
oint{}{}{{dq}/T} <= 0 (ongelijkheid van Clausius)