CL309

HEAT TRANSFER

 

FACULTY MEMBER : Dr (Mrs).P. Kalaichelvi

OBJECTIVE :

The objectives of this course are to import the fundamental knowledge of 'the various heat transfer modes and to understand the basic concepts of heat transfer equipment design, which finds wide applications in process industries.

Unit 1 :

Basic modes of heat transfer and the laws governing them. Steady state conduction through plane and composite walls general heat conduction equation, concepts of thermal diffusivity and equivalent thermal conductivity. Radial Heat conduction through thick cylindrical and spherical vessels.

Unit 2 :

Convection – Dimensional analysis and empirical correlations, critical insulation thickness for cylindrical and spherical surfaces, Hydrodynamic and thermal Boundary layers, physical significance of the dimensionless groups.

Unit 3 :

Thermal Radiation laws, spectrum of electromagnetic radiation, Black and Gray bodies, and configuration factor – typical examples.

Unit 4 :

Heat Exchangers – classification and design, overall and individual film coefficients, mean temperature difference, LMTD correction factor for multiple pass exchanger, NTU and efficiency of Heat exchangers, use of efficiency charts.

Unit 5 :

Evaporation, single and multiple effect operation, material and Energy balance in evaporators, boiling point elevation, Duhrin’gs rule, effect of liquid head, illustrative examples.

TEXT BOOKS:

  1. M. Mikheyev,” Fundamentals of Heat Transfer", Mir Publishers, Moscow, 1968.
  2. W. L. McCabe and J. C. Smith, “Unit Operations In Chemical Engineering", 4th Edn., McGraw Hill Publishing Co., 1985.

REFERENCES:

  1. S. Foust, L. A. Wenzel, C. W. Clump, Louis maus and L. B. Anderson Principles of Unit Operations’’ John Wily,New York.
  2. D.Q.Kern,’Process Heat Transfer,”McGraw Hill PublishingCo., New York, 1950.