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Blow down rate

Reference data und engineering information about blow down rate für Dampf und condensate applications.

blowdownrate

Overview

Engineering reference data for Blow Down Rate in steam condensate.

Key Formulas

Steam Quality

x=mvmtotalx = \frac{m_v}{m_{total}}

Mass fraction of vapor in two-phase mixture.

Enthalpy of Wet Steam

h=hf+xhfgh = h_f + x \cdot h_{fg}

Specific enthalpy of wet steam.

Flash Steam

mflash=mliquidhfhf2hfg2m_{flash} = m_{liquid} \frac{h_f - h_{f2}}{h_{fg2}}

Steam generated when condensate flashes to lower pressure.

Condensate Load

mc=Qhfgm_c = \frac{Q}{h_{fg}}

Condensate generated by heat transfer.

Variables

SymbolDescriptionUnit
xxSteam quality
hfh_fEnthalpy of saturated liquidkJ/kg
hfgh_{fg}Latent heat of vaporizationkJ/kg
hhSpecific enthalpykJ/kg
QQHeat transfer ratekW

References