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Thermal processes in industrial furnaces

* Exchange students do not have to consider this information when selecting suitable courses for an exchange stay.

Course Unit Code635-3031/01
Number of ECTS Credits Allocated5 ECTS credits
Type of Course Unit *Optional
Level of Course Unit *Second Cycle
Year of Study *First Year
Semester when the Course Unit is deliveredWinter Semester
Mode of DeliveryFace-to-face
Language of InstructionCzech
Prerequisites and Co-Requisites There are no prerequisites or co-requisites for this course unit
Name of Lecturer(s)Personal IDName
MAH46doc. Ing. Adéla Macháčková, Ph.D.
VLC37prof. Ing. Jozef Vlček, Ph.D.
VEL37doc. Ing. Marek Velička, Ph.D.
MAC589Ing. Mario Machů, Ph.D.
Summary
The subject is focused on extended theoretical and practical knowledge of heating process and cooling process of metal materials, technology of heating and thermal treatment from the perspective of thermal processes, thermo-technical conditions at heating in industrial furnaces, mainly in the pusher, walking beam, revolving furnaces and in furnaces for thermal treatment.
Learning Outcomes of the Course Unit
Student will be able:
- to characterise technology of metal heating in industrial furnaces,
- to calculate basic parameters of metal heating in industrial furnaces,
- student will be able to formulate basic thermo-technical processes during metal heating in industrial furnaces,
- student will be able to use his knowledge to make a decision about way of heating of metal in industrial furnaces,
- student will be able to apply his theoretical knowledge to propose the metal heating technology in industrial furnaces,
- to choose optimal type of industrial furnace for metal heating on basis of his knowledge.
Course Contents
• Properties of metals and alloys depending on temperature – thermal conductivity, specific heat capacity, density, linear and volume thermal expansion, coefficient of thermal inertia.
• Basic terms – flue gas radiation in furnaces space, temperature of furnace and lining, external and internal heat transfer, differentiation of charge on thin and thick body.
• External heat transfer – effect of relation position of grey bodies, balance of thermal flows on surface of lining, convective heat transfer of heated material, resulting equal of external heat transfer, graphic-analytical solution of external heat transfer, approximate calculation of external heat transfer, heating or cooling in liquid environment, cooling of charge in the air.
• Theoretical calculation of heating of thin bodies – heating of thin bodies in furnace with constant temperature and with variable temperature.
• Theoretical calculation of heating of thick bodies – derivation of Fourier differential equal of heat conduction, general solution of differential equal of heat conduction, conditions of uniqueness at solving the equal of heat conduction, effect of geometric shape of bodies, their average temperature and heat content.
• Technological principles of metal heating – final temperature of metal heating, thermal stresses during heating and cooling of metals, placing of material in furnace space, allowed unevenness of heating and degree of warming, metal heating modes and their choice, proposal of metal heating mode, empiric relations for determining heating time.
• Oxidation and decarbonisation of steel during the heating – theoretical basis of steel oxidation, effect of technological factors and furnaces atmosphere on burn out of metal, calculation of melting loss during metal heating, decarbonisation of steel, ways to reduction of steel melting loss.
• Calculation of steel heating v basic types of industrial furnaces – heating of round billet and ladle skull in the pusher and walking beam furnaces, heating of round billet and ladle skull in revolving furnaces.
• Calculation of steel heating v basic types of industrial furnaces –heating of material in chamber furnaces, steel heating during thermal treatment.
Recommended or Required Reading
Required Reading:
[1] MULLINGER, P., JENKINS, B. Industrial and ProcessFurnaces: Principles, Design and Operation.. 1sted. Oxford: Butterworth-Heinemann, 2008. ISBN 978-0-7506-8692-1.
[2] TRINKS, W. et al. Industrial Furnaces. 6th ed. New York: Wiley, 2003. ISBN 0471387061.
[3] SIENIUTYCZ, S., JEŻOWSKI, J. Energy Optimization in Process Systems. Oxford: Elsevier, 2009. ISBN 978-0-08-045141-1.
[4] MULLINGER, P., JENKINS, B. Industrial and Process Furnaces: Principles, Design and Operation.. 1st ed. Oxford: Butterworth-Heinemann, 2008. ISBN 978-0-7506-8692-1.
[1] RÉDR, M., PŘÍHODA, M. Základy tepelné techniky. 1. vyd. Praha: SNTL, 1991. ISBN 80-03-00366-0.
[2] KREMER, R., OBROUČKA K. Ohřev kovů. 1. vyd. Praha: SNTL, 1974.
[3] PŘÍHODA, M., HAŠEK, P. Hutnické pece. 2. vyd. Ostrava: VŠB, 1987.
[4] DESHMUKH, Y. V. Industrial Heating. Principles, Techniques, Materials, Applications, and Design. 1st ed. Boca Raton: CRC Press, 2005. ISBN 0-8493-3405-5.
Recommended Reading:
[1] TRINKS, W. et al. IndustrialFurnaces. 6th ed. New York: Wiley, 2003. ISBN 0471387061.
[2] MULLINGER, P., JENKINS, B. Industrial and Process Furnaces: Principles, Design and Operation.. 1st ed. Oxford: Butterworth-Heinemann, 2008. ISBN 978-0-7506-8692-1.
[3] KHAVKIN, Y. I. Combustion System Design. Tulsa: PennWell Books, 1996. ISBN 0-87814-462-5.
[1] MACHÁČKOVÁ, A, MRŇKOVÁ, L. Průmyslové pece: studijní opora. Ostrava: Vysoká škola báňská - Technická univerzita Ostrava, Fakulta metalurgie a materiálového inženýrství, 2014. ISBN 978-80-248-3589-1.
[2] BÁLEK, S. Tepelně technické tabulky a diagramy. 2. vyd. Ostrava: VŠB-TU Ostrava, 2005. ISBN 80-248-0828-5.
[3] HAŠEK, P., KLEČKOVÁ, Z. Energetika v metalurgii - cvičení. Ostrava: VŠB-TU, 1991.
Planned learning activities and teaching methods
Lectures, Tutorials
Assesment methods and criteria
Task TitleTask TypeMaximum Number of Points
(Act. for Subtasks)
Minimum Number of Points for Task Passing
Credit and ExaminationCredit and Examination100 (100)51
        CreditCredit25 15
        ExaminationExamination75 36