what are the types of mass transfer coefficient?
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In engineering, the mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving force:[1]
{\displaystyle k_{c}={\frac {{\dot {n}}_{A}}{A\Delta c_{A}}}} k_c = \frac{\dot{n}_A}{A \Delta c_A}
Where:
kc is the mass transfer coefficient [mol/(s·m2)/(mol/m3)], or m/s
{\displaystyle {\dot {n}}_{A}} \dot{n}_A is the mass transfer rate [mol/s]
A is the effective mass transfer area [m2]
ΔCA is the driving force concentration difference [mol/m3].
This can be used to quantify the mass transfer between phases, immiscible and partially miscible fluid mixtures (or between a fluid and a porous solid[2]).
{\displaystyle k_{c}={\frac {{\dot {n}}_{A}}{A\Delta c_{A}}}} k_c = \frac{\dot{n}_A}{A \Delta c_A}
Where:
kc is the mass transfer coefficient [mol/(s·m2)/(mol/m3)], or m/s
{\displaystyle {\dot {n}}_{A}} \dot{n}_A is the mass transfer rate [mol/s]
A is the effective mass transfer area [m2]
ΔCA is the driving force concentration difference [mol/m3].
This can be used to quantify the mass transfer between phases, immiscible and partially miscible fluid mixtures (or between a fluid and a porous solid[2]).
ayeshasarwar24:
it's just mass transfer coefficient... not the types
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