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Speclore

ventilateur lois lois d'affinité pour CVC

Fan affinity laws relating speed, débit, pression et puissance pour hvac fan selection.

fanlawsaffinity

Overview

Engineering reference data for Fan Laws (Affinity Laws) for HVAC in HVAC systems.

Key Formulas

Sensible Heat

Q=m˙cpΔTQ = \dot{m} c_p \Delta T

Heat causing temperature change.

Latent Heat

Q=m˙hfgΔωQ = \dot{m} h_{fg} \Delta\omega

Heat causing moisture change.

COP (Cooling)

COP=Qc/WCOP = Q_c / W

Coefficient of performance.

Variables

Symbol Description Unit
QQ Heat transfer W
m˙\dot{m} Mass flow rate kg/s
cpc_p Specific heat of air J/(kg·K)
ΔT\Delta T Temperature difference K

References