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En 12735 铜 tubes 空氣 conditioning refrigeration

參考 數据 與 工程 information about en 12735 铜 tubes 空氣 conditioning refrigeration 用于 暖通空调 systems applications.

12735coppertubesair

Overview

Engineering reference data for EN 12735 Copper Tubes Air Conditioning Refrigeration 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