Introduction to Heat Transfer

General Data
Academic program	ECAM ENGINEERING PROGRAM			:
Type d'EC	Classes
Lectures : 12h00 Tutorials : 12h00 Lab Work : 8h00 Total duration : 56h00	Status :	Period : Semester 5	Education language : English

Learning Outcomes
1) To acquire a fundamental and practical understanding of thermal energy transport. 2) To understand the physical processes (identification of different modes – conduction, convection and radiation) describing heat transfer. 3) To identify and develop the governing equations and boundary conditions for heat transfer problems. 4) To formulate solutions to multi-mode heat transfer problems in terms of appropriate formulae, empirical relations, and mathematical manipulations. 5) To analyze heat transfer problems from a practical standpoint with respect to physical limitations, and other factors pertinent to heat transfer design. 6) To identify the relevance of heat transfer to industrial application and increase the ability to handle realistic engineering problems.

Learning Outcomes

1) To acquire a fundamental and practical understanding of thermal energy transport.
2) To understand the physical processes (identification of different modes – conduction, convection and radiation) describing heat transfer.
3) To identify and develop the governing equations and boundary conditions for heat transfer problems.
4) To formulate solutions to multi-mode heat transfer problems in terms of appropriate formulae, empirical relations, and mathematical manipulations.
5) To analyze heat transfer problems from a practical standpoint with respect to physical limitations, and other factors pertinent to heat transfer design.
6) To identify the relevance of heat transfer to industrial application and increase the ability to handle realistic engineering problems.

Content
12 hours (lecture), 12 hours (tutorial), 8 hours (Practical Work) - General introduction : fundamentals of heat transfer, heat transfer mechanisms, relationship to thermodynamics, methodology of analysis. - Fundamentals of conduction : Heat conduction equation, Fourier's law, one-dimensional heat conduction equation solutions with/without heat generation, variable thermal conductivity, boundary and initial conditions. - Steady heat conduction : heat conduction in plane walls, cylinder wall and spherical shell, thermal resistance concept, generalized thermal resistance network, notion of thermal contact temperature, critical radius of insulation, heat transfer from finned surfaces. - Fundamentals of convection : physical mechanisms, hydrodynamic/thermal boundary layer equations, Nusselt and Prandtl numbers, boundary layer similarity, Reynolds analogy. - External forced convection : laminar and turbulent flow, heat transfer correlations for the parallel flow over flat plates and the flow over cylinders and spheres, flow across tube banks. - Internal forced convection : laminar and turbulent flow in tube, thermal entry length, general thermal analysis, log mean temperature difference, heat transfer correlations for circular/non-circular tubes. - Introduction to radiation: spectral and directional distribution, notion of solid angle, blackbody radiation, Stefan-Boltzmann law, emission from real surfaces, radiative properties (emissivity, absorptivity, transmittivity, reflectivity), Kirchoff's laws.

Content

12 hours (lecture), 12 hours (tutorial), 8 hours (Practical Work)
- General introduction : fundamentals of heat transfer, heat transfer mechanisms, relationship to thermodynamics, methodology of analysis.
- Fundamentals of conduction : Heat conduction equation, Fourier's law, one-dimensional heat conduction equation solutions with/without heat generation, variable thermal conductivity, boundary and initial conditions.
- Steady heat conduction : heat conduction in plane walls, cylinder wall and spherical shell, thermal resistance concept, generalized thermal resistance network, notion of thermal contact temperature, critical radius of insulation, heat transfer from finned surfaces.
- Fundamentals of convection : physical mechanisms, hydrodynamic/thermal boundary layer equations, Nusselt and Prandtl numbers, boundary layer similarity, Reynolds analogy.
- External forced convection : laminar and turbulent flow, heat transfer correlations for the parallel flow over flat plates and the flow over cylinders and spheres, flow across tube banks.
- Internal forced convection : laminar and turbulent flow in tube, thermal entry length, general thermal analysis, log mean temperature difference, heat transfer correlations for circular/non-circular tubes.
- Introduction to radiation: spectral and directional distribution, notion of solid angle, blackbody radiation, Stefan-Boltzmann law, emission from real surfaces, radiative properties (emissivity, absorptivity, transmittivity, reflectivity), Kirchoff's laws.

Pre-requisites / co-requisites
Thermodynamics Fluid Mechanics

Bibliography
Y. Çengel, “Heat and Mass Transfer, A practical approach”, 3nd Ed, McGraw Hill Higher Eduction. F.P. Incropera and D.P. DeWitt, “Fundamentals of Mass and Heat Transfer”, 6th/7th Ed, John Wiley. J. P. Holman, “Heat Transfer”, 7th Ed., McGraw-Hill, 1990.

Assessment(s)
N°	Nature	Coefficient	Observable objectives
1
2	Laboratory work: Practical insight through lab benchwork applications (linear heat conduction, forced convection over a flat plate, heat transfer from a fin)	0,25	1, 2, 5, 6
3	Mid-term exam: Fundamentals of heat transfer Heat conduction equation Steady heat conduction (thermal resistance network)	0,3	1 - 6