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ECTS Course Overview



Electrical Heating Technology

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

Course Unit Code410-4116/02
Number of ECTS Credits Allocated8 ECTS credits
Type of Course Unit *Optional
Level of Course Unit *Second Cycle
Year of Study *
Semester when the Course Unit is deliveredSummer Semester
Mode of DeliveryFace-to-face
Language of InstructionEnglish
Prerequisites and Co-Requisites Course succeeds to compulsory courses of previous semester
Name of Lecturer(s)Personal IDName
KRA24doc. Ing. Vladimír Král, Ph.D.
Summary
The subject includes theoretical part with applications of physical laws of heat transfer. Next it follows the complex of electric heating. It finally follows the industrial applications of resistance, induction, arc, dielectric, electron and laser principle of use the transformation of electric energy to heat.
Learning Outcomes of the Course Unit
After passing the subject the student is able to apply the physical fundaments of heat transfer to different electroheating technological principles. The student is also able to design the way of electric heating and electric warming according to the setting.
In the exercise part of the subject the student applies the theoretical findings from the lectures to the calculations of energy transfers in different technological principles. The student demonstrates practical abilities in measuring in labs. The student also demonstrates the ability of designing electroheating equipments in two programs.

Course Contents
Lectures:
The fundaments of heat transfer, conduction, convection and radiation.
The analogy between thermal and electric field.
Special constructional and material problems, the temperature measuring.

The resistance electroheat. Direct and indirect heating. The calculation of heating elements.
Electric heating.
Infrared radiation.
Induction electroheating equipments. The physical principles of heat transfer. Equipments for melting, diathermy and surface heating. Power supplies for induction heating.
Dielectric electroheating equipments. Power supplies. Practical use. Microwave heating.
Arc furnaces. Physical principles of electric arc. Circle diagram, unbalance of the supply. Electric equipments of industrial arc furnaces.
Energy budget of arc furnaces. Welding, power supplies for welding.
Plasma electroheating equipments. Examples of practical use.
Electron electroheating equipments.
Laser electroheating equipments.
World research and up-to-date findings in Electroheat.
The new results of energy budget research of electric arc at the Department of Electric Power Engineering, VŠB-TUO

Exercises:
Information about the requirements for passing the exercises. Safety considerations. The organization of the work in the labs. Instructions for elaboration of lab task.
The physical fundaments of heat transfer. Quantities, symbols and units. The relations between mechanical and thermal energy. The heating and cooling process.
The analogy between thermal and electric field. Heat conduction. The cooling of electric equipments and semiconductors.
The convection and radiation.
Resistance electroheating equipments. Design of the heating element.

Direct and indirect resistance heating. Resistance furnaces. Calculation of the heating period.
Induction electroheating equipments.
Arc electroheating equipments. The circle diagram of arc furnace. Control of furnace transformer. Reactor. The short circuit of arc furnace.
The design of induction furnace. Dielectric heating.

Laboratories:
Lab 1: Direct resistance furnace.
Lab 2: Symmetrization of one-phase load
Lab 3: Measure on induction furnace.
Recommended or Required Reading
Required Reading:
A.C. Metaxas: Foundations of Electroheat A Unified Approach. Book published by University of Cambridge UK 1996 .

Hradílek, Z.: Modelling of a Free Burning Electric Arc by Control of the Power Programme of the Steelmaking Arc Furnace. Proceedings XII. th. Congress International Union Electroheat 1992 Montred Canada, ISBN 2-89310-121-6
Hradílek, Z.: Energy savings using reactor with controlled power regime EAF. XIII. World Congress BNCO - UIE 1996 Birningham U.K. Proceedings, ISBN 186126007X.
Hradílek, Z.: Energy savings using reactor with controlled power regime EAF. Elektrowärme Int. Vulkan Verlag Essen 1997, No 4, B 154-155 BRD, ISBN 0340-3521-IK-5548F.
Hradílek, Z.: Teoretical aspects of alternative proposals of electric heating. Sborník vědeckých prací VŠB TUO 1999.
Hradílek, Z.: Alternative proposal of electric heating in closed spaces. U.I.E. Congress Lisabon Portugal 2000.
Hradílek, Z.: at. all: Cooperation on Engineering Education Computer aided disign and Work simulation of Electric Furnaces and Heaters. International Conference ICEE 1999, Ostrava, Proceedings.


Rada, J. a kol: Elektrotepelná technika SNTL Praha 1985
Hradílek, Z.: Elektrické teplo, Skripta VŠB Ostrava 1989
Žídek J., Gavlas J.: Elektrické teplo - návody do cvičení
Hradílek, Z., a kol.: Elektrotepelná zařízení, IN-EL,Praha 1997
Hradílek, Z., a kol: Elektrotepelná technika, simulace, počítačové programy, VŠB TU Ostrava,Monografie 2001
Recommended Reading:
.A.C. Metaxas:
Foundations of Electroheat A Unified Approach. Book published by University of Cambridge UK 1996 .
Hradílek, Z.: Modelling of a Free Burning Electric Arc by Control of the Power Programme of the Steelmaking Arc Furnace. Proceedings XII. th. Congress International Union Electroheat 1992 Montred Canada, ISBN 2-89310-121-6
Hradílek, Z.: Energy savings using reactor with controlled power regime EAF. XIII. World Congress BNCO 8211; UIE 1996 Birningham U.K. Proceedings, ISBN 186126007X.
Hradílek, Z.: Energy savings using reactor with controlled power regime EAF. Elektrowärme Int. Vulkan Verlag Essen 1997, No 4, B 154-155 BRD, ISBN 0340-3521-IK-5548F.
Hradílek, Z.: Teoretical aspects of alternative proposals of electric heating. Sborník vědeckých prací VŠB TUO 1999.
Hradílek, Z.: Alternative proposal of electric heating in closed spaces. U.I.E. Congress Lisabon Portugal 2000.
Hradílek, Z.: at. all: Cooperation on Engineering Education Computer aided disign and Work simulation of Electric Furnaces and Heaters. International Conference ICEE 1999, Ostrava, Proceedings.


Hradílek, Z.: Elektrotepelná technika, Skripta VŠB TU 1996, ISBN 80-7078-323-0.
Hradílek, Z., a kolektiv: Elektrotepelná technika , Simulace a počítačové programy,Skripta VŠB TUO 2001, ISBN 80-7078-874-7. Elektronická forma podpory, CD ROM.

Rada, J., Hradílek, Z. akol: Elektrotepelná technika, SNTL Praha, 19985
Hering, M.: Podstawy elektrotermii cz. I a II. Kniha Warszawa, 1992, 1998, ISBN 83-204-1384-2.
Hradílek, Z. a kolektiv: Elektrotepelná zařízení , Kniha IN-EL Praha 1997, ISBN 80-902333-2-5.
Žídek, J., Gavlas,, J.: Elektrické teplo. Návody do cvičení.

Studijní pomůcky - Sylaby
Elektrické vytápění . Učební texty r. 1999, Hradílek, Z.
Elektrické vytápění r. 2000 . učební texty.Hradílek, Z.,Gavlas, J.
Elektrické zdroje napájení indukčních zařízení v r. 2001. Sajdak
Indukční ohřev r. 2000. Cz. Sajdak.
Programy komputerowe. Elektronická forma podpory CD ROM. PIKT a PIKP.Zásady projektování indukčních kanálkových pecí. Sajdak, Kurek, r. 1997.
Hradílek, Z., Gavlas.,: Řízení energetických parametrů obloukových pecí, r. 1997.

Planned learning activities and teaching methods
Lectures, Tutorials, Experimental work in labs, Project work, Other activities
Assesment methods and criteria
Tasks are not Defined