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Difference Between Heat Transfer And Mass Transfer, Heat Transfer, Mass Transfer

Posted on 11 December 2017 | 4:49 pm by

Difference Between Heat And Mass Transfer

What Is Heat Transfer

Heat Transfer deals with the movement of heat and temperature gradients. The three fundamental modes of heat transfer are conduction, convection, and radiation. The rate of heat transfer is dependent on the temperatures of the systems and the properties of the intervening medium through which the heat is transferred.

Heat Transfer Formula: Heat Transfer is given by

heat transfer formula
m is the mass,
C is the specific heat
Δ T is the temperature difference in K.

What Is Mass Transfer

The Mass transfer is the physical movement of a body from one place to another. Like water moving in pipes, crude from piping etc. Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, adsorption, drying, precipitation, membrane filtration, and distillation. Two Types of Mass Transfer include diffusion and convection.

Mass Transfer Formula: 

At a point A (xAL, yAG), we can write the mass transfer equations for each of the phases:

mass transfer formula

mass transfer formula

Where :

NA - molar flux of component A, mole/(area.time)
ky - mass transfer coefficients in the gas phase
(yAG - yAi) - concentration driving force in the gas phase (mole fraction)
kx - Mass transfer coefficients in the liquid phase
(xAi - xAL) - concentration driving force in the liquid phase (mole fraction)

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