Heal and mass transfer

Bennett, C. Q.andMYERS, J. E. Momentum, Heal and Mass Transfer, 3rd edn (McGraw-Hill, New York, 1983), Brodkey, R. S. and Hershey, H. C. Transport Phenomena (McGraw-Hill, New York, 1988). 

In the case of drying foodstuffs, this is a complex combination of coupled heal and mass transfer through natural tissues The need to take... 

Hong, B., Armaly, B.F., and Chen, T.S., "Laminar Mixed Convection in a Duct with a Backward-facing Step the Effects of Inclination Angle and Prandtl Number , Int. J. of Heal and Mass Transfer, Vol. 36. Aug. 93, pp. 3059-3067, 1993. 

V. Gnielinski. New Equations for Heal and Mass Transfer in Turbulent Pipe and Channel Flow. International Chemical Engineering 16 (1976), pp. 359-368. 

W, M. Kays and M. E. Crawford. Convective Heal and Mass Transfer. 3rd ed. New York McGraw-Hill, 1993. 

C Using the analogy between heal and mass transfer, explain how the mass transfer coefficient can be detcrinined from the relaiions for ihe heat transfer coefficient. 

Air flows in a 4-cm-diameter wet pipe at 20 C and 1 atm with an average velocity of 4 m/s in order to dry the surface. The Nussell number in this case can be determined from Nu = 0.023Re Pi"- where Ke = 10,550 and Pr = 0.731. Also, the diffusion coefficient of water vapor in air is 2.42 X 10 mVs. Using the analogy between heal and mass transfer, the mass transfer coefficient inside the pipe for fully developed flow becomes... 

Connor M. A. (1983) Heat and mass transfer considerations in fuel production from wood wastes by pyrolysis. Regional Journal of Energy, Heal and Mass Transfer, 5, 179-94. 

Kidney, Second Australasian Conference on Heal and Mass Transfer. University of Sydney, 1977, pp, 189-197. 

The differential form of the energy balance for a multicomponent mixture can be written In a variety of forms.1 6 It would contain terms reprenenting heat conduction and radiation, body forces, viscous dissipation, reversible work, kinetic energy, and the substantial derivative of the enthalpy of die mixture. Its formulation is beyond the scope of this chapter. Certain simplifled forms will be used in later chapters in problems such as simultaneous heal and mass transfer in air-water operations or thermal effects in gas absorbent. 

I. Tanasawa and N. Lior (eds.), Heal and Mass Transfer in Materials Processing, Hemisphere, New York, 1992. 

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