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Course info
KEE / ETPR
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Course description
Department/Unit / Abbreviation
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KEE
/
ETPR
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Academic Year
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2018/2019
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Academic Year
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2018/2019
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Title
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Electroheat processes
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Form of course completion
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Exam
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Form of course completion
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Exam
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Accredited / Credits
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Yes,
4
Cred.
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Type of completion
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Combined
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Type of completion
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Combined
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Time requirements
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Lecture
2
[Hours/Week]
Tutorial
2
[Hours/Week]
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Course credit prior to examination
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Yes
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Course credit prior to examination
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Yes
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Automatic acceptance of credit before examination
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Yes in the case of a previous evaluation 4 nebo nic.
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Included in study average
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YES
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Language of instruction
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Czech, English
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Occ/max
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Automatic acceptance of credit before examination
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Yes in the case of a previous evaluation 4 nebo nic.
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Summer semester
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0 / -
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11 / -
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0 / -
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Included in study average
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YES
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Winter semester
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0 / -
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0 / -
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0 / -
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Repeated registration
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NO
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Repeated registration
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NO
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Timetable
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Yes
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Semester taught
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Summer semester
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Semester taught
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Summer semester
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Minimum (B + C) students
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10
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Optional course |
Yes
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Optional course
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Yes
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Language of instruction
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Czech, English
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Internship duration
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0
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No. of hours of on-premise lessons |
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Evaluation scale |
1|2|3|4 |
Periodicity |
každý rok
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Evaluation scale for credit before examination |
S|N |
Periodicita upřesnění |
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Fundamental theoretical course |
No
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Fundamental course |
No
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Fundamental theoretical course |
No
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Evaluation scale |
1|2|3|4 |
Evaluation scale for credit before examination |
S|N |
Substituted course
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None
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Preclusive courses
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N/A
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Prerequisite courses
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N/A
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Informally recommended courses
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N/A
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Courses depending on this Course
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N/A
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Histogram of students' grades over the years:
Graphic PNG
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XLS
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Course objectives:
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The aim of this subject is to provide students clear and logical interpretation of fundamental terms and relations from the area of efficient transformations of electric energy to useful heat for technological purposes, service water warming and heating with observance of 3E criterion.
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Requirements on student
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Credit: Participation in tutorials (laboratory measurements), elaboration of papers and semestral thesis.
Exam: Knowledge in physical fundamentals and their applications.
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Content
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Programme of lectures
1. Energy intensity of heat production, electrothermal engineering - content, importance; physical fundamentals of transformations of electric energy to useful heat for technological purposes, heating and air-conditioning and service water warming
2. Heat transfer in electrothermal equipment: conduction, convection, radiation; theory of induction heating
3. General and harmonic electromagnetic wave, Poyinting vector, planar harmonic electromagnetic wave in electrically conductive and electrically non-conductive environment
4. Electric and magnetic wave in conductive wall of short thickness, impedance of the wall, optimal thickness of the wall - practical meaning, induced heat in the wall of short thickness and in the wall of large thickness
5. Electric current in belt conductors, cylindrical electromagnetic wave - in cavity of cylindrical coil, in the slot between the coil and the workpiece, in full cylindrical workpiece; impedance of cylindrical workpiece
6. Induced heat end electromagnetic transparency of the cylindrical workpiece, cylindrical conductor, physical fundamentals and theory of dielectric heating
7. Induction equipment, substitute electric circuit, fundamentals of calculation by the method of substitute diameters, induction equipments compensation principle, limitation of leakage electromagnetic field force
8. Power supply sources for induction equipment, balancing unit, reverse forces of induction equipment on supply network
9. Induction channel furnaces, principle of operation, efficiency of induction equipment
10. Heating by electric arc principle, electric energy transfer specialities in short path of arc furnaces, operating characteristics, reverse forces on supply network
11. Electric resistance heating - physically, resistance equipment, special construction materials used in electrothermal equipment
12. Possibilities of increase in efficiency for induction equipment and force on supply network, ecology and working environment
13. Modern electrothermal technologies, computer simulations of physical effects at induction heating, results for practice on the basis of 3E criterion evaluation
Programme of tutorials
1. Introduction to laboratory measurements
2. Introduction to laboratory measurements, safety rules
3. Semestral thesis assignment
4. Laboratory measurement 1-6
5. Laboratory measurement 1-6
6. Laboratory measurement 1-6
7. Laboratory measurement 1-6
8. Laboratory measurement 1-6
9. Laboratory measurement 1-6
10. Inference of equations of electrodynamic potential for numerical calculations
11. Inference of Fourier-Kirchhoff equation for numerical calculations
12. Semestral thesis consultation
13. Semestral thesis handing in, credit
Laboratory measurements 1-6
1. Determining the distribution of temperature field in inductively heated electrically conductive plate
2. Temperature field of infra heaters
3. Temperature field of radiant panels
4. Efficiency of electrothermal sources for food preparation
5. Symmetrization, balancing unit
6. Influence of shielding on coil inductance
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Activities
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Fields of study
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Guarantors and lecturers
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Literature
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-
Recommended:
Rada, Josef. Elektrotepelná technika. 1. vyd. Praha : SNTL, 1985.
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Recommended:
Langer, Emil. Elektrotepelná technika. 1. vyd. Plzeň : VŠSE, 1969.
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Recommended:
Langer, Emil. Elektrotepelná technika. část I, II, Společné základy, elektrické pece odporové. 2. vyd. Plzeň : VŠSE, 1974.
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Recommended:
Langer, Emil; Kožený, Jiří. Elektrotepelná zařízení indukční : základy teorie, výpočty a konstrukce. 1. vyd. Plzeň : VŠSE, 1982.
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Recommended:
Kegel, K. Elektrowärme. Theorie und Praxis. Cornelsen Verlag GmbH + C, 1994. ISBN 377360355X.
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Recommended:
Rudnev, Valery. Handbook of induction heating. New York : Marcel Dekker, 2003. ISBN 08247-0848-2.
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Recommended:
Starck, Axel von; Mühlbauer, Alfred; Kramer, Carl. Handbook of thermoprocessing technologies : fundamentals, processes, components, safety. Essen : Vulkan-Verlag, 2005. ISBN 3-8027-2933-1.
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Recommended:
Linda, Josef; Mühlbacher, Jan. Návody ke cvičení z elektrického tepla II. 1. vyd. Plzeň : ZČU, 1993. ISBN 80-7082-088-8.
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Recommended:
Langer, Emil. Teorie indukčního a dielektrického tepla. Praha : Academia, 1979.
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On-line library catalogues
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Time requirements
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All forms of study
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Activities
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Time requirements for activity [h]
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Contact hours
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26
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Practical training (number of hours)
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26
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Presentation preparation (report) (1-10)
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10
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Preparation for an examination (30-60)
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30
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Preparation for laboratory testing; outcome analysis (1-8)
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6
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Preparation for comprehensive test (10-40)
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10
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Total
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108
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Prerequisites
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Knowledge - students are expected to possess the following knowledge before the course commences to finish it successfully: |
Knowledge at the level of Theory of Electrical Engineering and Electromagnetic field theory subjects, which are taught at the Faculty of Electrical Engineering, University of West Bohemia in Pilsen. |
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Learning outcomes
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Knowledge - knowledge resulting from the course: |
Students will get the ability of choosing the most suitable electrothermal source for the realization of heating for various technological purposes. They will also get familiar with analytical and numerical problem solving in the area of electroheat. |
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Assessment methods
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Knowledge - knowledge achieved by taking this course are verified by the following means: |
Oral exam |
Written exam |
Test |
Individual presentation at a seminar |
Seminar work |
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Teaching methods
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Knowledge - the following training methods are used to achieve the required knowledge: |
Lecture |
Laboratory work |
Multimedia supported teaching |
Task-based study method |
Individual study |
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