• Semester 5, position 4

Through the introducing with physical basis of heat and mass transfer, students should gain a basic theoretical, and through the practical examples and professional knowledge and skills which will enable them to independently identify and solved the basic heat and mass transfer problems that are faced engineers of thermo-technique, thermo-energetic and processes engineering.

After successful completion of this course students should be able to: 1) describe and explain the physical essence and mechanisms and express the basic hypotheses and laws that describe the processes of heat and mass transfer 2) calculate the temperature field in simple geometric solid bodies based on the known boundary and initial conditions and vice versa, calculate heat flux on the known temperature field in steady conditions 3) calculate the concentration field in simple geometric solid bodies based on the known boundary and initial conditions and vice versa, calculate mass flux on the known concentration field in steady conditions 4) calculate the temperature field and the heat flux in simple geometric solid bodies in case of unsteady periodic heat conduction 5) calculate the concentration field and the mass flux in simple geometric solid bodies in case of unsteady periodic conducting (diffusion) of the substance 6) calculate the heat and/or mass flux in the case of free and forced convective transfer for fluid flows across, through and around solid bodies 7) calculate the radiation heat flux between opaque gray surfaces separated by a non-absorbing non-scattering medium, then the radiation heat flux from semi-transparent absorbing gases on opaque gray surfaces.

1. Basic principles and laws of energy, momentum and mass transfer 2. Steady heat conducting - Heat transfer from extended surfaces 3. Heat transfer with phase change - processes of melting and solidification 4. Heat transfer by convection without changing the the aggregate state of the fluid; Boundary layer theory; Local and averaged values of the coefficient of heat transfer. 5. Analogies between the phenomena of transferring of substance, momentum and energy 6. Heat transfer with phase change - boiling and condensation 7. Coupled heat and mass transfer problems 8. Thermal radiation of gases and vapors. Radiation exchange between flue gases with and without solid particles and surface of solid body.

1. Workshop and discussion dedicated to basic terms and principles of heat transfer 2. Problems and examples and laboratory exercise in connection with the heat conduction through the rods, ribs and ribbed surface 3. Problems and examples in connection with transient heat conduction with change of aggregate state - the process of melting and solidification 4. Problems and examples in connection with heat convection 5. Problems and examples in connection with processes of boiling and processes of condensation 6. Problems and examples in connection with processes of simultaneous heat and mass transfer 7. Problems and examples in connection with thermal radiation of gases and vapors.

Passed exams: Physics and measurements and Thermodynamics B

1. Handouts 2. Incropera, F., DeWit, D., Bergman, T, Lavine, A: Introduction to Heat Transfer, Wiley, 5th edition, 912 pages, 2006. 3. Cengel, Y.: Heat Transfer A Practical Approach, McGraw - Hill; 2nd edition 1024 pages, 2003. 4. Cengel, Y., Ghajar, A: Heat and Mass Transfer: Fundamentals and Applications + EES DVD for Heat and Mass Transfer, McGraw-Hill Science/Engineering/Math; 4 edition, 924 pages, 2010.

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 20
Laboratory exercises: 0
Calculation tasks: 10
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 10
Test: 0
Final exam: 5

Activity during lectures: 0
Test/test: 60
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 40
Requirement for taking the exam (required number of points): 30

Milincic, D., Vasiljevic, B., Djordjevic, R.: Heat Transfer Problems, Faculty of Mechanical Engineering of University of Belgrade, Belgrade, 1991.; Milincic, D.: Heat transfer, Naucna knjiga, Belgrade, 1989; Frank P. Incropera, David P. De Witt: Fundamentals of Heat and Mass Transfer, John Wiley & Sons Edition, 2006; Baehr, H. D., Stephan, K.: Heat and Mass Transfer, Springer-Verlag Berlin Heidelberg, 2011; Cengel, Y., Ghajar, A: Heat and Mass Transfer: Fundamentals and Applications + EES DVD for Heat and Mass Transfer, McGraw-Hill Science/Engineering/Math; 4 edition, 924 pages, 2010.