Electric & Induction Heating

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Electric & Induction Heating Introduction: Electric heating is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes .An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside every electric heater is simply an electrical resistor, and works on the principle of Joule heating: an electric current through a resistor converts electrical energy into heat energy.Alternatively, a heat pump uses an electric motor to drive a refrigeration cycle, drawing heat from a source such as the ground or outside air and directing it into the space to be warmed. Definition Dielectric heating (also known as electronic heating, RF heating, high-frequency heating) is the process in which radiowave or microwave electromagnetic radiation heats a dielectric material. This heating is caused by dipole rotation. Power For dielectric heating the generated power density per volume is calculated by Induction heating Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, where eddy currents are generated within the metal and resistance leads to Joule heating of the metal. An induction heater (for any process) consists of an electromagnet, through which a high-frequency alternating current (AC) is passed. Heat may also be generated by magnetic hysteresis losses in materials that have significant relative permeability. The frequency of AC used depends on the object size, material type, coupling (between the work coil and the object to be heated) and the penetration depth. Applications of Induction Heating Induction furnace Induction welding Induction cooking Induction brazing Induction sealing Heating to fit Heat treatment Advantages of Induction Heating Optimized Consistency Maximized Productivity Improved Product Quality Extended Fixture Life Environmentally Sound Reduced Energy Consumption Source : http://nprcet.org/e%20content/Misc/e-Learning/EEE/IV%20YEAR/EE1452%20- %20Electric%20Energy%20Generation,%20Conservation%20and%20Utilization.pdf.

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3-D Electromagnetic Radiative Non-Newtonian Nanofluid Flow With
www.nature.com/scientificreports OPEN 3‑D electromagnetic radiative non‑Newtonian nanofuid fow with Joule heating and higher‑order reactions in porous materials Amel A. Alaidrous1* & Mohamed R. Eid2,3* The aim of this work is to discuss the efect of mth‑order reactions on the magnetic fow of hyperbolic tangent nanofuid through extending surface in a porous material with thermal radiation, several slips, Joule heating, and viscous dissipation. In order to convert non‑linear partial diferential governing equations into ordinary ones, a technique of similarity transformations has been implemented and then solved using the OHAM (optimal homotopy analytical method). The outcomes of novel efective parameters on the non‑dimensional interesting physical quantities are established utilizing the tabular and pictorial outlines. After a comparison with previous literature studies, the results were fnely compliant. The study explores that the reduced Nusselt number is diminished for the escalating values of radiation, porosity, and source (sink) parameters. It is found that the order of the chemical reaction m = 2 is dominant in concentration as well as mass transfer in both destructive and generative reactions. When m reinforces for a destructive reaction, mass transfer is reduced with 34.7% and is stabled after η = 3. In the being of the destructive reaction and Joule heating, the nanofuid’s temperature is enhanced. Abbreviations a, b Constants (–) B0 Magnetic parameter C Concentration (mol/m3) cp Specifc heat C Free stream concentration (mol/m3)
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Tubular Heaters Heat up the Foodservice Industry
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Electric Permittivity of Carbon Fiber
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Joule Heating of the South Polar Terrain on Enceladus K
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University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Dissertations, Theses, & Student Research in Food Food Science and Technology Department Science and Technology Summer 7-28-2015 Simulation and Validation of Radio Frequency Heating of Shell Eggs Soon Kiat Lau University of Nebraska-Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/foodscidiss Part of the Food Science Commons, Mechanical Engineering Commons, and the Microbiology Commons Lau, Soon Kiat, "Simulation and Validation of Radio Frequency Heating of Shell Eggs" (2015). Dissertations, Theses, & Student Research in Food Science and Technology. 61. http://digitalcommons.unl.edu/foodscidiss/61 This Article is brought to you for free and open access by the Food Science and Technology Department at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Dissertations, Theses, & Student Research in Food Science and Technology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. i Simulation and Validation of Radio Frequency Heating of Shell Eggs by Soon Kiat Lau A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science Major: Food Science and Technology Under the Supervision of Professor Jeyamkondan Subbiah Lincoln, Nebraska August, 2015 ii Simulation and Validation of Radio Frequency Heating of Shell Eggs Soon Kiat Lau, M.S. University of Nebraska, 2015 Advisor: Jeyamkondan Subbiah Finite element models were developed with the purpose of finding an optimal radio frequency (RF) heating setup for pasteurizing shell eggs. Material properties of the yolk, albumen, and shell were measured and fitted into equations that were used as inputs for the model.
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Design of a Wireless Power Transfer System Using Inductive Coupling and MATLAB Programming Apoorva.P1 Deeksha.K.S2 Pavithra.N3 Student, Dept
International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 3 Issue: 6 3817 - 3825 _______________________________________________________________________________________________ Design of a Wireless Power Transfer System using Inductive Coupling and MATLAB programming Apoorva.P1 Deeksha.K.S2 Pavithra.N3 Student, Dept. Of EEE, Student, Dept. Of EEE Student, Dept. Of EEE, Dr. T. Thimmaiah Institute of Dr. T. Thimmaiah Institute of Dr. T. Thimmaiah Institute of Technology Technology Technology K.G.F,India K.G.F, India K.G.F, India [email protected] [email protected] [email protected] Vijayalakshmi.M.N4 Somashekar.B5 David Livingston.D6 Student, Dept. Of EEE Asst Professor Dept. Of EEE, Asst Professor Dept. Of EEE, Dr. T. Thimmaiah Institute of Dr. T. Thimmaiah Institute of Dr. T. Thimmaiah Institute of Technology Technology Technology K.G.F, India K.G.F, India K.G.F, India [email protected] [email protected] [email protected] Abstract—Wireless power transfer (WPT) is the propagation of electrical energy from a power source to an electrical load without the use of interconnecting wires. It is becoming very popular in recent applications. Wireless transmission is useful in cases where interconnecting wires are difficult, hazardous, or non-existent. Wireless power transfer is becoming popular for induction heating, charging of consumer electronics (electric toothbrush, charger), biomedical implants, radio frequency identification (RFID), contact-less smart cards, and even for transmission of electrical energy from space to earth. In the design of the coils, the parameters of coils are obtained by using the basic calculations and measurements.
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Induction Heating Principles PRESENTATION
Induction Heating Principles PRESENTATION www.ceia-power.com This document is property of CEIA which reserves all rights. Total or partial copying, modification and translation is forbidden FC040K0068V1000UK Main Applications of Induction Heating ¾ Hard (Silver) Brazing ¾ Tin Soldering ¾ Heat Treatment (Hardening, Annealing, Tempering, …) ¾ Melting Applications (ferrous and non ferrous metal) ¾ Forging This document is property of CEIA which reserves all rights. Total or partial copying, modification and translation is forbidden FC040K0068V1000UK Examples of induction heating applications This document is property of CEIA which reserves all rights. Total or partial copying, modification and translation is forbidden FC040K0068V1000UK Advantages of Induction Reduced Heating Time Localized Heating Efficient Energy Consumption Heating Process Controllable and Repeatable Improved Product Quality Safety for User Improving of the working condition This document is property of CEIA which reserves all rights. Total or partial copying, modification and translation is forbidden FC040K0068V1000UK Basics of Induction INDUCTIVE HEATING is based on the supply of energy by means of electromagnetic induction. A coil, suitably dimensioned, placed close to the metal parts to be heated, conducting high or medium frequency alternated current, induces on the work piece currents (eddy currents) whose intensity can be controlled and modulated. This document is property of CEIA which reserves all rights. Total or partial copying, modification and translation is forbidden FC040K0068V1000UK Basics of induction The heating occurs without physical contact, it involves only the metal parts to be treated and it is characterized by a high efficiency transfer without loss of heat. The depth of penetration of the generated currents is directly correlated to the working frequency of the generator used; higher it is, much more the induced currents concentrate on the surface.
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