Mass Transfer Coefficient Definition. νµ ρ the symbol. Concentration difference is said to be the driving force for mass transport.
The mass transfer coefficients sherwood numbers are obtained from the sublimation depth difference before and after a run ie. A heat transfer coefficient h is generally defined as. K c n a a δ c a displaystyle kcfrac dot naadelta ca where.
This chapter presents a very short overview of mass transfer coefficients starting from their definition and describing the methods for their estimation.
One is the reynolds dimensionless number. In the above equations variable. The total rate of heat transfer to a fluid flowing inside a tube of diameter d and length l is given by where and are appropriately averaged values of heat transfer coefficient and driving temperature difference respectively and δt is the temperature rise of the fluid over the length l. N a x d a b a c a 2 c a 1 x 2 x 1 d a b a δ c a δ x hence the driving potential for diffusional mass transfer is c a 2 c a 1.