410-4118/03 – Energy Problems of Electrical Heating Equipment (EPEZ)
| Gurantor department | Department of Electrical Power Engineering | Credits | 8 |
| Subject guarantor | doc. Ing. Vladimír Král, Ph.D. | Subject version guarantor | doc. Ing. Vladimír Král, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FEI | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
After completing the course the student can apply the theory to the design of electric heating method, can assess the interference effects of electro-thermal devices on the power grids and suggest possibilities of their limitation. In exercises, laboratories, and projects, it demonstrates the ability to calculate and design electro-thermal devices with computer support when applying a variant solution.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Project work
Other activities
Field data collection
Summary
The course focuses on industrial applications of resistance, induction, arc, dielectric, electron and laser principles of utilization of transformation of electric energy into thermal energy, their optimization with regard to energy consumption and elimination their disturbances on the supply network. It also includes energy issues of electrical heating.
Compulsory literature:
Recommended literature:
Hradílek, Z. Teoretical aspects of alternative proposals of electric heating. Ostrava: Sborník vědeckých prací VŠB TUO 1999
Hradílek, Z. Alternative proposal of electric heating in closed spaces. Lisabon: 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. Ostrava: Proceedings of International Conference ICEE 1999, Ostrava
Additional study materials
Way of continuous check of knowledge in the course of semester
Terms of the credit:
Detailed points specification is at http://fei1.vsb.cz/kat451/studium/f_studium.htm in studium section of this course.
Process projects in time, observe required format and manner of delivery.
Carry out in addition:
From each of tasks get 1 point minimally.
Each of tasks is possible to deliver only once.
E-learning
Materials are available at https://lms.vsb.cz/?lang=en.
Other requirements
There are not defined other requirements for student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Heat transfer. Fourier-Kirchhoff differential equation. Universal equation of energy transfer.
Electrical resistive heating.
Physical principle of arc creation.
Electric Arc Furnaces (EAF) - DC and AC arc characteristics, circle diagram, asymmetry, operating characteristics.
Arc stabilization by inductance, resistor. EAC diagnostics and supply circuit.
Optimization of EAF performance. Ladle furnaces (LF).
Plasma electro thermal devices. Plasmatrons.
Induction heating - electrical diagrams of induction devices.
Induction electro heat devices - crucible and channel furnaces.
Induction surface heating, superheating, hardening, brazing and welding, refining remelting.
Asymmetry in induction electro thermal equipment.
Dielectric heating. Heterogeneous dielectrics. Supplies for induction and dielectric heating.
Microwave heating, magnetron. Electron heating, electron gun.
Laser. Physical principles, types of lasers.
Infrared heating.
Exercise:
Introduction to the requirements for passing the exercise. Safety instructions. Guidelines for projects and reports preparation.
Heat transfer.
Indirect resistance heating - furnace control, comparison of energy consumption for heating the charge by theoretical calculation and measurement on a laboratory furnace.
Indirect resistance heating - calculation of heating time of the charge. Direct resistance heating.
Calculation of the supply circuit of EAF. Choke. EAF control.
EAF - working with a circle diagram, operating characteristics.
EAF control systems.
Induction crucible furnace design.
Project assignments.
Induction channel furnaces. Dielectric heating.
Symmetrisation.
Credit test.
Laboratories:
Direct resistance heating.
Symmetrisation of single-phase loads.
Projects:
Calculation of the supply circuit of EAF.
Optimization of indirect resistance heating.
Optimization of induction heating.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction