PC6501 - HEAT TRANSFER (Syllabus) 2013-regulation Anna University

PC6501 - HEAT TRANSFER (Syllabus) 2013-regulation Anna University

PC6501	HEAT TRANSFER	LTPC

3104

OBJECTIVE:

To learn heat transfer by conduction, convection and radiation and heat transfer equipments like evaporator and heat exchanger

UNIT I	CONDUCTION	9

Modes of heat transfer – Steady and unsteady state heat transfer – Concept of heat conduction – Fourier’s law of heat conduction – General heat conduction equation in spherical coordinates – One-dimensional steady state heat conduction equation for flat plate, hollow cylinder, hollow sphere –Analogy between flow of heat and flow of electricity – Effect of temperature on thermal conductivity – Critical insulation thickness– Transient heat conduction – Lumped heat parameter model.

UNIT II	CONVECTION	9

Concept of heat transfer by convection – Natural and forced convection – Concept ofLMTD – Local and overall heat transfer coefficient – Application of dimension alanalysis for convection – Empirical Equations for forced convection under laminar, transient and turbulent conditions – Empirical equations for natural convection –Influence of boundary layer on heat transfer – Heat transfer through packed and fluidized beds – Heat transfer with phase change: boiling, vaporization and condensation.

UNIT III	RADIATION	9

Concept of thermal radiations – Black body concept – Stefan Boltzman’s law –Emissive power – Black body radiation – Emissivity – Planck’s law – Radiation between black surfaces – Gray surfaces – Radiation shields – Radiation applications– Pipe still heaters.

UNIT IV	HEAT EXCHANGERS	9

Heat exchanger types – Parallel and counter flow heat exchangers – Overall heat transfer coefficient – Log mean temperature difference for single pass – Correction factor for multi pass heat exchangers – Heat exchanger effectiveness – Number of transfer units – Chart for different configurations – Dirt factor.

UNIT V	EVAPORATORS	9

Evaporation – Single effect and multiple effect evaporation – Boiling point elevation –Effect of liquid head – Capacity and economy of multiple effect evaporators –Evaporation equipments.

TOTAL (L : 45 + T : 15) : 60 PERIODS

OUTCOME:

Students gain knowledge in various heat transfer methodology in process engineering and to design heat transfer equipments such as furnace, boilers, heat exchangers evaporation

TEXT BOOKS:

1. Kumar, D.S., “Heat and Mass Transfer”, 5th Edition, S.K. Kataria and Sons, 2000.
2. McCabe,W.L. and Smith, J.C., “Unit Operations in Chemical Engineering", 5th Edition. McGraw Hill Publishing Co., 2001

REFERENCES:

1. Kern, D.Q., “Process Heat Transfer", Tata McGraw Hill Publishing Co., 1990.
2. Hollman, “Heat Transfer”, 8th Edition, McGraw Hill, 1997.
3. Kreith, F., “Principles of Heat Transfer”, 4th Edition, Harper and Row, 1976.