Presentation 2.pptx
- 1. INDUCTIVE HEATING RHYTHIN NATH PV 22412FST016 MSc .FOOD TECHNOLOGY
- 2. CONTENT INDRODUCTION PRINCIPLE HOW ITS WORK HEATING MODE APPLICATION ADVANTAGE LIMITATION CONCLUSION REFERENCE
- 3. INDRODUCTION +The basic principle of induction heating have been understood and applied to manufacturing since 1920 s during 2^nd world war +It is method of raising the temperature of an electrically conductive material by subjecting it to an alternating em field +It is a contactless electric heating process +It is a high frequency heating process
- 4. Continues... +The heat generated in the material is proportional to the frequency and intensity of the magnetic field, the material's electrical conductivity, and its magnetic permeability. Induction heating allows for precise temperature control and is highly efficient, as it does not require any physical contact between the heating element and the material being heated, reducing energy loss. +Induction heating is used in a variety of industries, including automotive, aerospace, and medical device manufacturing, where it is used to improve the properties of materials, reduce production time, and improve efficiency.
- 6. PRINCIPLE +FARADAY'S LAW OF ELECTROMAGNETIC INDUCTION & CON CEPT OF JOULE HEATING
- 7. FARADAY'S LAW +First law: It states that whenever there is a change in magnetic flux associated with a coil, EMF is induced in that coil. + Second law: It states that the magnitude of EMF induced in the coil is directly proportional to the rate of change of magnetic flux associated with that coil.
- 8. CONCEPT OF JOULE HEATING +Joule heating is the physical effect by which the pass of current through an electrical conductor produces thermal energy.
- 9. HOW ITS WORK + The induction heating process works by creating a strong magnetic field using an alternating current (AC) that flows through a coil of copper wire. This coil is called an induction coil, and it is usually made of copper tubing or wire that is wound into a spiral shape. When the alternating current flows through the coil, it creates an oscillating magnetic field that passes through the workpiece placed inside the coil. + As the magnetic field passes through the conductive material, it induces an electrical current, or eddy current, in the material. This current flows in a circular pattern, generating heat due to the resistance of the material. The heat generated by the eddy current is proportional to the resistance of the material and the intensity of the magnetic field. The heating process can be controlled by adjusting the frequency and intensity of the alternating current, as well as the distance between the coil and the workpiece. By adjusting these parameters, the temperature of the workpiece can be precisely controlled, making induction heating a versatile and efficient heating method
- 12. HEATING MODE +STATIC HEATING +Workpiece is placed into an induction heating coil for a given period of time and set the amount of power is supplied +CONTINUOUS HEATING +Workpiece is moved in a continuous motion through one or more induction heating coil
- 13. APPLICATIONS
- 14. INDUCTION COOKING +The circulating current in the metal pan on the top of the induction coil directly heat the pan +copper bottomed pan aluminium pan and other non ferrous pans are generally unsuitable hey +Induction cooking is highly efficient, with up to 90% of the energy produced being transferred to the cookware, compared to only 50% for gas and 65% for traditional electric stovetops. The heat is also highly responsive, with the ability to adjust temperatures quickly and accurately.
- 16. INDUCTION SEALING +Is a non contact method of heating a metallic disk to hermatically seal the top of plastic and glass container +Reason to use induction sealing +Leak prevention ,freshness retention,sustaniabilty
- 18. MILK PASTEURIZATION +Rise milk temperature faster than traditional method +destruction of total bacterial Load was 99.5 percentage +coliform and Escherichia count have been 1/10 of traditional method +fouling was not produced due to the fast heat transfer
- 19. OTHER APPILCATION +Induction food warmer +induction extruder +heating of roller +can sterilization +bio oil production
- 20. ADVANTAGE + Fast heating: Induction heating is a rapid process that can heat materials quickly and efficiently. The heat is generated directly in the material, so there is no need for a heat transfer medium, such as air or water. + Precise control: Induction heating provides precise control over the heating process, allowing for accurate temperature control and heating profiles. This is particularly useful in applications where precise temperature control is critical, such as in metallurgy and materials science. + Energy efficiency: Induction heating is an energy-efficient process that minimizes heat loss and can reduce energy consumption compared to other heating methods. This is because the heat is generated directly in the material, rather than being transferred through a medium, which can result in significant heat loss.
- 21. Continues.... + Clean process: Induction heating is a clean process that does not produce emissions, such as greenhouse gases, making it an environmentally friendly option. + Low maintenance: Induction heating equipment is relatively low maintenance and has a long service life. This is because the equipment does not have any moving parts that require regular maintenance or replacement. + Versatility: Induction heating can be used for a wide range of applications, including heating metals, plastics, and glass, making it a versatile process. It is particularly useful in applications where traditional heating methods, such as flame or oven heating, are not suitable.
- 22. LIMITATIONS +Material limitations: Induction heating is only effective on materials that are electrically conductive, which means that non-metallic materials cannot be heated using this method. +Depth of heating: Induction heating is not suitable for deep heating of materials. The depth of heating is limited by the frequency of the electromagnetic field and the material's electrical conductivity. +Equipment cost: Induction heating equipment is often more expensive than other heating methods, such as gas heating or resistance heating.
- 23. Continues.. + Power consumption: Induction heating requires a significant amount of power to operate. This can result in high energy costs. + Safety concerns: Induction heating can pose a safety risk due to the high voltages and currents involved. Proper training and safety measures must be in place to prevent accidents. + Design complexity: Induction heating requires careful design and optimization of the electromagnetic coil, power supply, and other components. This can add complexity to the system and increase the design and manufacturing costs.
- 24. CONCLUSION +Induction heating is a process that involves heating a conductive material by inducing an electromagnetic field within it. The process is efficient, fast, and has a wide range of applications, including in the manufacturing industry, metallurgy, and material science. Induction heating is a non-contact heating process that offers several advantages over traditional heating methods, including improved energy efficiency, precise temperature control, and reduced processing time. It is a reliable and versatile heating method that can be used to heat a wide range of materials and is increasingly being used in various industrial processes.
- 25. REFERENCE +How Induction Heating Works - Ultraflex Power Technologies: https://ultraflexpower.com/how-induction-heating-works/ +Induction Heating Principles - GH Induction: https://www.gh- ia.com/en/induction-heating/principles/ +Induction Heating - ScienceDirect: https://www.sciencedirect.com/topics/engineering/induction-heating +Induction Heating Theory and Applications - ASM International: https://www.asminternational.org/documents/10192/2049770/06691 G_Chapter_1.pdf/30f1ad81-cc0b-4d4d-a4ee-7f24c6d72b7d
- 26. THANK YOU