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空気 ducts 温度 圧力 摩擦 loss

Reference data と engineering information about 空気 ducts 温度 圧力 摩擦 loss for hvac systems applications.

airductstemperaturepressure

Overview

Engineering reference data for Air Ducts Temperature Pressure Friction Loss 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

SymbolDescriptionUnit
QQHeat transferW
m˙\dot{m}Mass flow ratekg/s
cpc_pSpecific heat of airJ/(kg·K)
ΔT\Delta TTemperature differenceK

References