Ackermann correction factor

This equation, which is analogous in form to Eq. (2.4-8) for the effect of mass flux on mass transfer coefficient, is known as the Ackermann correction factor for the effect of mass transfer on heat transfer. Note that the totai flux of enthaipy to the vapor-liquid interfiice is the sum of the conductive flux and the enthalpy carried by the transferring molecules... 

In Eq. 14.191, xg is the mass flow fraction of the gas (i.e., rhglm), cpg is the specific heat of the gas, and dTgldim is the local slope of the equilibrium condensation curve (see Fig. 14.25). hg is calculated for the gas phase flowing along by itself and should be corrected for mass transfer effects using the Ackermann [202] correction factor ... 

Heat and mass transfer have an influence on each other, which can be taken into account by the Ackermann [5] correction factor E for the heat transfer stream... 

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