# Mass Transfer Coefficient

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Mass transfer coefficient, abbreviated as K, is a porportional constant to the difference in the concentrations and the rate of mass transfer.

## Mass Transfer Coefficient formulas

 FORMULA: SOLVE FOR: $$\large{ K = \frac {\dot {m}_t }{A \; \Delta F_c} }$$ $$\large{ K = \frac { Sh \; D} {l_c} }$$ (Sherwood number)

### Where:

$$\large{ K }$$ = mass transfer coefficient

$$\large{ l_c }$$ = characteristic length

$$\large{ D }$$ = diffusion coefficient

$$\large{ \Delta F_c }$$ = driving force concentration differential

$$\large{ A }$$ = effective mass transfer area

$$\large{ \dot {m}_t }$$ = mass transfer rate

$$\large{ Sh }$$ = Sherwood number