What's possible with CENOS induction heating simulation?
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Simulation allows for modeling of complex heating processes including: - Scanning motions and controlled heating of workpieces - Rotational motions and calculation of induced currents at high frequencies - Optimization of choke designs and materials properties Results of simulations include: - Visualization of hardened zones and temperature distributions over time - Statistics on energy usage and component properties like inductor inductance
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What Is Magnetic refrigeration
What Is Magnetic refrigeration
he magnetocaloric effect (MCE, from magnet and calorie) is a magneto-thermodynamic phenomenon in which a temperature change of a suitable material is caused by exposing the material to a changing magnetic field. This is also known by low temperature physicists as adiabatic demagnetization. In that part of the refrigeration process, a decrease in the strength of an externally applied magnetic field allows the magnetic domains of a magnetocaloric material to become disoriented from the magnetic field by the agitating action of the thermal energy (phonons) present in the material. If the material is isolated so that no energy is allowed to (re)migrate into the material during this time, (i.e., an adiabatic process) the temperature drops as the domains absorb the thermal energy to perform their reorientation. The randomization of the domains occurs in a similar fashion to the randomization at the curie temperature of a ferromagnetic material, except that magnetic dipoles overcome a decreasing external magnetic field while energy remains constant, instead of magnetic domains being disrupted from internal ferromagnetism as energy is added.
One of the most notable examples of the magnetocaloric effect is in the chemical element gadolinium and some of its alloys. Gadolinium's temperature increases when it enters certain magnetic fields. When it leaves the magnetic field, the temperature drops. The effect is considerably stronger for the gadolinium alloy (Gd
5Si
2Ge
2).[8] Praseodymium alloyed with nickel (PrNi
5) has such a strong magnetocaloric effect that it has allowed scientists to approach to within one milliKelvin, one thousandth of a degree of absolute zero.[9]
IRJET- Design and Fabrication of Thermo Acoustic Refrigerator
This document describes the design and fabrication of a thermoacoustic refrigerator. Some key points:
1. Thermoacoustic refrigeration uses sound waves to alternately compress and relax gas particles in a tube, transferring heat without moving parts.
2. The refrigerator consists of a resonator tube containing a stack of closely spaced surfaces through which a sound wave oscillates. Heat is transferred between the gas and stack surfaces.
3. Experiments investigated different stack geometries and materials to optimize heat transfer and the refrigerator's performance. Temperature sensors measured the temperature difference created.
Introduction to Magnetic Refrigeration
DATE: 2019.06
We have given a lecture to the class in the course of "Refrigeration Systems" in ODTÜ.
Refrigeration technology has an important role over various areas such as medicine, food, manufacturing, and it is a very important element for a comfortable life for the society. It directly affects the people’s life by permiting to store the medicines and foods for long times, manufacturing with very high accuracy, air conditioning applications, etc.
Although refrigeration technology have lots of benefits which has been mentioned above, conventional vapor compression/expansion systems have some weaknesses. Refrigerant fluids that are used in the traditional cooling/refrigeration applications have important effects over the global warming and ozone depletion. To be able to overcome these disadvantages of the refrigeration applications, new thecnologies which does not use harmful matirals such as traditional refrigerants are investigated. One of these developing technologies is magnetic refrigeration systems.
Magnetic refrigeration systems are commonly used in the low temperature applications and it also has usage in air conditioning applications, aerospace technologies and telecommunication technologies.
Magnetic refrigeration has lots of advantages such that:
1. It uses very small amount of energy compared to compressor work inlet of a similar size vapor compression/expansion system.
2. It is highly more compact and makes less noise than the traditional systems.
3. It has a lower operating and maintenance cost.
4. It is environment friendly and does not cause the global warming or ozone depletion.
Although the magnetic refrigeration has lots of benefits which have been described above, because of its high initial cost and need of the very rare materials in the system, it is not very common recent days, however, it has a high potential for the future.
Seminar report nitin unde
The document summarizes the working principles of magnetic refrigeration systems. It begins with an introduction to different refrigeration methods and outlines the advantages of magnetic refrigeration over conventional vapor compression systems. It then describes the key concepts of magnetocaloric effect and magnetic refrigeration cycles. Specifically:
1) Magnetic refrigeration utilizes the magnetocaloric effect where applying/removing a magnetic field causes certain materials to heat up/cool down. This replaces the need for compressors and refrigerants.
2) The document explains the temperature changes associated with magnetizing/demagnetizing magnetocaloric materials like gadolinium and illustrates the temperature-entropy diagram of magnetic refrigeration cycles.
3) It provides an overview of
Introduction to Magnetic Refrigeration
DATE: 2019.05.12
We have given a lecture to the class in the course of "Refrigeration Systems" in ODTÜ.
● Introduction
● History and Developments
● Physical Phenomenas
● Thermodynamics of Magnetic Refrigeration
● Magnetocaloric Materials
● Future of Magnetic Refrigeration
● Developments
● Usage Areas
● Conclusion
MAGNETIC REFRIGERATION
This document summarizes a presentation on magnetic refrigeration. It introduces the magnetocaloric effect where certain magnetic materials experience a temperature change when exposed to a changing magnetic field. It then describes how magnetic refrigeration works by using this effect to remove heat from a substance, replacing the gas compression/expansion process with magnetizing and demagnetizing the magnetic material. Finally, it discusses suitable magnetic materials, the advantages of magnetic refrigeration over conventional refrigeration like higher efficiency and being environmentally friendly, and potential applications of the technology.
Exergy analysis of magnetic refrigeration
The document discusses magnetic refrigeration and exergy analysis of magnetic refrigeration cycles. It explains the magnetocaloric effect and how magnetic fields can be used to achieve cooling via adiabatic demagnetization. Key equations presented include those relating the magnetocaloric effect to changes in magnetic field and temperature. The document also summarizes the reversible Brayton refrigeration cycle used in magnetic refrigeration and equations for the exergy efficiency and exergy destroyed. Major breakthroughs in 1997 that accelerated progress in the field are noted. In closing, the summary states that magnetic refrigeration provides an effective and efficient cooling method and has improved significantly since initial work in the 1920s-1930s.
MAGNETIC REFRIGERATION
The magnetic refrigeration at room temperature is an emerging technology that has
attracted the interest of researchers around the world (Bouchekara, 2008). Such a technology
applies the magnetocaloric effect which was first discovered by Warburg (Bohigas, 2000;
Zimm, 2007).
Recommended
What Is Magnetic refrigeration
What Is Magnetic refrigeration
he magnetocaloric effect (MCE, from magnet and calorie) is a magneto-thermodynamic phenomenon in which a temperature change of a suitable material is caused by exposing the material to a changing magnetic field. This is also known by low temperature physicists as adiabatic demagnetization. In that part of the refrigeration process, a decrease in the strength of an externally applied magnetic field allows the magnetic domains of a magnetocaloric material to become disoriented from the magnetic field by the agitating action of the thermal energy (phonons) present in the material. If the material is isolated so that no energy is allowed to (re)migrate into the material during this time, (i.e., an adiabatic process) the temperature drops as the domains absorb the thermal energy to perform their reorientation. The randomization of the domains occurs in a similar fashion to the randomization at the curie temperature of a ferromagnetic material, except that magnetic dipoles overcome a decreasing external magnetic field while energy remains constant, instead of magnetic domains being disrupted from internal ferromagnetism as energy is added.
One of the most notable examples of the magnetocaloric effect is in the chemical element gadolinium and some of its alloys. Gadolinium's temperature increases when it enters certain magnetic fields. When it leaves the magnetic field, the temperature drops. The effect is considerably stronger for the gadolinium alloy (Gd
5Si
2Ge
2).[8] Praseodymium alloyed with nickel (PrNi
5) has such a strong magnetocaloric effect that it has allowed scientists to approach to within one milliKelvin, one thousandth of a degree of absolute zero.[9]
IRJET- Design and Fabrication of Thermo Acoustic Refrigerator
This document describes the design and fabrication of a thermoacoustic refrigerator. Some key points:
1. Thermoacoustic refrigeration uses sound waves to alternately compress and relax gas particles in a tube, transferring heat without moving parts.
2. The refrigerator consists of a resonator tube containing a stack of closely spaced surfaces through which a sound wave oscillates. Heat is transferred between the gas and stack surfaces.
3. Experiments investigated different stack geometries and materials to optimize heat transfer and the refrigerator's performance. Temperature sensors measured the temperature difference created.
Introduction to Magnetic Refrigeration
DATE: 2019.06
We have given a lecture to the class in the course of "Refrigeration Systems" in ODTÜ.
Refrigeration technology has an important role over various areas such as medicine, food, manufacturing, and it is a very important element for a comfortable life for the society. It directly affects the people’s life by permiting to store the medicines and foods for long times, manufacturing with very high accuracy, air conditioning applications, etc.
Although refrigeration technology have lots of benefits which has been mentioned above, conventional vapor compression/expansion systems have some weaknesses. Refrigerant fluids that are used in the traditional cooling/refrigeration applications have important effects over the global warming and ozone depletion. To be able to overcome these disadvantages of the refrigeration applications, new thecnologies which does not use harmful matirals such as traditional refrigerants are investigated. One of these developing technologies is magnetic refrigeration systems.
Magnetic refrigeration systems are commonly used in the low temperature applications and it also has usage in air conditioning applications, aerospace technologies and telecommunication technologies.
Magnetic refrigeration has lots of advantages such that:
1. It uses very small amount of energy compared to compressor work inlet of a similar size vapor compression/expansion system.
2. It is highly more compact and makes less noise than the traditional systems.
3. It has a lower operating and maintenance cost.
4. It is environment friendly and does not cause the global warming or ozone depletion.
Although the magnetic refrigeration has lots of benefits which have been described above, because of its high initial cost and need of the very rare materials in the system, it is not very common recent days, however, it has a high potential for the future.
Seminar report nitin unde
The document summarizes the working principles of magnetic refrigeration systems. It begins with an introduction to different refrigeration methods and outlines the advantages of magnetic refrigeration over conventional vapor compression systems. It then describes the key concepts of magnetocaloric effect and magnetic refrigeration cycles. Specifically:
1) Magnetic refrigeration utilizes the magnetocaloric effect where applying/removing a magnetic field causes certain materials to heat up/cool down. This replaces the need for compressors and refrigerants.
2) The document explains the temperature changes associated with magnetizing/demagnetizing magnetocaloric materials like gadolinium and illustrates the temperature-entropy diagram of magnetic refrigeration cycles.
3) It provides an overview of
Introduction to Magnetic Refrigeration
DATE: 2019.05.12
We have given a lecture to the class in the course of "Refrigeration Systems" in ODTÜ.
● Introduction
● History and Developments
● Physical Phenomenas
● Thermodynamics of Magnetic Refrigeration
● Magnetocaloric Materials
● Future of Magnetic Refrigeration
● Developments
● Usage Areas
● Conclusion
MAGNETIC REFRIGERATION
This document summarizes a presentation on magnetic refrigeration. It introduces the magnetocaloric effect where certain magnetic materials experience a temperature change when exposed to a changing magnetic field. It then describes how magnetic refrigeration works by using this effect to remove heat from a substance, replacing the gas compression/expansion process with magnetizing and demagnetizing the magnetic material. Finally, it discusses suitable magnetic materials, the advantages of magnetic refrigeration over conventional refrigeration like higher efficiency and being environmentally friendly, and potential applications of the technology.
Exergy analysis of magnetic refrigeration
The document discusses magnetic refrigeration and exergy analysis of magnetic refrigeration cycles. It explains the magnetocaloric effect and how magnetic fields can be used to achieve cooling via adiabatic demagnetization. Key equations presented include those relating the magnetocaloric effect to changes in magnetic field and temperature. The document also summarizes the reversible Brayton refrigeration cycle used in magnetic refrigeration and equations for the exergy efficiency and exergy destroyed. Major breakthroughs in 1997 that accelerated progress in the field are noted. In closing, the summary states that magnetic refrigeration provides an effective and efficient cooling method and has improved significantly since initial work in the 1920s-1930s.
MAGNETIC REFRIGERATION
The magnetic refrigeration at room temperature is an emerging technology that has
attracted the interest of researchers around the world (Bouchekara, 2008). Such a technology
applies the magnetocaloric effect which was first discovered by Warburg (Bohigas, 2000;
Zimm, 2007).
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This document summarizes a study on the power efficiency of piezoelectric fans. Piezoelectric fans use alternating electric fields applied to PZT layers to induce vibration in attached fan blades, creating airflow without moving parts. The study experimentally investigates how fan configuration factors like blade thickness and length affect power consumption and heat transfer performance. Total power consumption is separated into parasitic losses in the PZT actuator and useful flow power that correlates to cooling. Results show flow power estimated using aerodynamic damping matches better than linear damping models, and heat transfer performance correlates more closely to flow rather than total power. Ongoing work aims to further optimize blade motion for higher efficiency.
seminar on Magnetic Refrigeration - Solid refrigerant
This document discusses magnetic refrigeration, including its working principle, components, advantages, and current state of development. Magnetic refrigeration uses the magnetocaloric effect and works by applying and removing a magnetic field to materials to remove and release heat from target systems. Its potential advantages include higher efficiency and reliability compared to vapor compression refrigeration, without using ozone-depleting refrigerants. However, magnetic refrigeration remains under development due to challenges like initial costs and limited temperature ranges of magnetocaloric materials.
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PPT on Magnetic Refrigeration
This document provides an overview of magnetic refrigeration. It discusses the history and principles of magnetic refrigeration, describing the magnetocaloric effect and the thermodynamic cycle used. The components required for a magnetic refrigerator are outlined. Applications are discussed, along with advantages such as high efficiency and compactness compared to vapor-compression refrigeration. Some challenges are also noted, such as limited temperature changes and availability of materials. In conclusion, while further development is needed, magnetic refrigeration shows promise as an environmentally-friendly cooling technology.
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This document discusses magnetic refrigeration, which uses the magnetocaloric effect to provide cooling. It works by applying and removing a magnetic field from magnetocaloric materials, causing their temperature to change. The document outlines the components, thermodynamic cycle steps, requirements, examples of prototypes, advantages like efficiency and sustainability, and challenges like initial costs. It also covers potential applications like household refrigeration and compares magnetic refrigeration to current technologies under development.
Ijetr011821
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
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Monthly Journal,
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Research Article,
Free Journals, Open access Journals,
erpublication.org,
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Science Journals,
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The document discusses the application of the second law of thermodynamics to heat engines and cooler engines. It explains that heat engines take in fluid through a cycle, absorbing heat from a high temperature source, partially converting it to mechanical work, and discarding the rest as heat to a low temperature source. Cooler engines operate in the opposite way, using external work to transfer heat from a cool reservoir to a hot reservoir. Examples of cooler engines given are refrigerators and air conditioners.
Magnetic Refrigiration
Magnetic refrigeration has been viewed as primarily a cryogenic technology because the necessary high magnetic fields are most easily provided by superconducting magnets.
Magnetic refrigerator
Magnetic refrigeration uses the magnetocaloric effect to achieve cooling through a thermodynamic cycle that involves magnetizing and demagnetizing a material. It was discovered in 1881 and further developed in the 1920s-1930s to achieve temperatures below 1K. Recent research has focused on materials with giant magnetocaloric effects and developing practical refrigerator designs. Magnetic refrigeration offers higher efficiency and lower costs than vapor compression refrigeration, with benefits for the environment and new technologies. Further development is still needed to address challenges like improving magnetocaloric materials and precision moving parts.
Refrigeration
The document discusses refrigeration and refrigeration systems. It defines refrigeration as the process of removing heat from a space and transferring it elsewhere to lower the temperature. A refrigeration system uses a refrigerant that absorbs heat during evaporation in the evaporator and releases it during condensation. The main components of a refrigeration system are the compressor, condenser, expansion device, and evaporator. Common refrigerants include ammonia, chlorofluorocarbons, and hydrochlorofluorocarbons.
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This document discusses the design and analysis of an air-conditioned tricycle that uses thermoelectric cooling. The system uses multiple thermoelectric Peltier modules to absorb heat from the air and provide cooling. Rectangular fins and fiber sheets are used to improve heat transfer from the modules. The design is intended to provide cooling without using ozone-depleting refrigerants. Experimental results showed the thermoelectric system was able to achieve a cooling power of 50W per module with a coefficient of performance between 1.5-2. The document reviews several other studies on thermoelectric cooling systems and their advantages over traditional vapor-compression air conditioners.
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R&ac lecture 35
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1. Cooling load calculations are more complex than heating load calculations as they involve unsteady state processes and internal heat sources.
2. Methods for estimating loads range from simple rules-of-thumb to complex transfer function methods. The CLTD/CLF method separates loads into sensible and latent components.
3. Total cooling load has external components from building envelope conduction and solar gain, and internal components from occupants, lights, and appliances. Loads are estimated by calculating each component.
How Computer Simulation Helps to Design Induction Heating Systems ASM 2001
This document discusses how computer simulation helps design induction heating systems. It outlines improvements in hardware and software that enable more advanced simulation. A case study shows how variable coil positioning optimized large diameter pipe coating by reducing coil length and energy use by 25-30% compared to uniform positioning. The conclusion states simulation is an effective design, optimization, and educational tool for induction heating.
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Electrical machines lifetime and performances could be improved when along the design process both electromagnetic and thermal behaviors are taken into account. Moreover, real time information about the device thermal state is necessary to an appropriate control with minimized losses. Models based on lumped parameter thermal circuits are: generic, rapid, accurate and qualified as a convenient solution for power systems. The purpose of the present paper is to validate a simulation platform intended for the prediction of the thermal state of an induction motor covering all operation regimes. To do so, in steady state, the proposed model is validated using finite element calculation and experimental records. Then, in an overload situation, obtained temperatures are compared to finite element’s ones. It has been found that, in both regimes, simulation results are with closed proximity to finite element’s ones and experimental records.
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What's possible with CENOS Platform?
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- scanning heating
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This document provides an overview of magnetic refrigeration. It discusses the history and principles of magnetic refrigeration, describing the magnetocaloric effect and the thermodynamic cycle used. The components required for a magnetic refrigerator are outlined. Applications are discussed, along with advantages such as high efficiency and compactness compared to vapor-compression refrigeration. Some challenges are also noted, such as limited temperature changes and availability of materials. In conclusion, while further development is needed, magnetic refrigeration shows promise as an environmentally-friendly cooling technology.
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This document discusses magnetic refrigeration, which uses the magnetocaloric effect to provide cooling. It works by applying and removing a magnetic field from magnetocaloric materials, causing their temperature to change. The document outlines the components, thermodynamic cycle steps, requirements, examples of prototypes, advantages like efficiency and sustainability, and challenges like initial costs. It also covers potential applications like household refrigeration and compares magnetic refrigeration to current technologies under development.
Ijetr011821
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
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The document discusses the application of the second law of thermodynamics to heat engines and cooler engines. It explains that heat engines take in fluid through a cycle, absorbing heat from a high temperature source, partially converting it to mechanical work, and discarding the rest as heat to a low temperature source. Cooler engines operate in the opposite way, using external work to transfer heat from a cool reservoir to a hot reservoir. Examples of cooler engines given are refrigerators and air conditioners.
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Magnetic refrigeration uses the magnetocaloric effect to achieve cooling through a thermodynamic cycle that involves magnetizing and demagnetizing a material. It was discovered in 1881 and further developed in the 1920s-1930s to achieve temperatures below 1K. Recent research has focused on materials with giant magnetocaloric effects and developing practical refrigerator designs. Magnetic refrigeration offers higher efficiency and lower costs than vapor compression refrigeration, with benefits for the environment and new technologies. Further development is still needed to address challenges like improving magnetocaloric materials and precision moving parts.
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The document discusses refrigeration and refrigeration systems. It defines refrigeration as the process of removing heat from a space and transferring it elsewhere to lower the temperature. A refrigeration system uses a refrigerant that absorbs heat during evaporation in the evaporator and releases it during condensation. The main components of a refrigeration system are the compressor, condenser, expansion device, and evaporator. Common refrigerants include ammonia, chlorofluorocarbons, and hydrochlorofluorocarbons.
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Showcase ppt ver 8
This document discusses research being conducted to optimize the cooling system design of the Villanova Steel Orca Research Center data center. Various cooling strategies and containment configurations will be tested using CFD software to minimize total energy consumption for cooling. Key factors like supply air flow rate and chiller supply temperature setpoint will be optimized. The most efficient designs will be validated at the new research facility to improve data center energy efficiency.
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Plasma arc machining (PAM) uses a high-velocity plasma jet heated to approximately 50,000°C to melt and displace material. The plasma is created by heating and ionizing gas in a plasma torch using an electric arc between a tungsten electrode and nozzle. The setup includes a plasma gun, workpiece, gas supply unit, cooling system, and power supply. Key controlling parameters are stand-off distance, cutting speed, and gas type and flow rate. PAM provides high cutting rates for a variety of materials but also has disadvantages like noise, heat affected zones, safety issues, and high initial costs. Its applications include stock cutting, shaping, and manufacturing automotive and railway components.
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This document discusses methods for calculating cooling and heating loads on buildings. It covers key topics like:
1. Cooling load calculations are more complex than heating load calculations as they involve unsteady state processes and internal heat sources.
2. Methods for estimating loads range from simple rules-of-thumb to complex transfer function methods. The CLTD/CLF method separates loads into sensible and latent components.
3. Total cooling load has external components from building envelope conduction and solar gain, and internal components from occupants, lights, and appliances. Loads are estimated by calculating each component.
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This document discusses how computer simulation helps design induction heating systems. It outlines improvements in hardware and software that enable more advanced simulation. A case study shows how variable coil positioning optimized large diameter pipe coating by reducing coil length and energy use by 25-30% compared to uniform positioning. The conclusion states simulation is an effective design, optimization, and educational tool for induction heating.
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What's possible with CENOS Platform?
CENOS Platform - a simple 3D simulation desktop software for induction heating. Our platform connects the best of community-backed open source tools into one seamless user experience with simple interface for induction heating and hardening applications: - induction coil heating
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What's possible with CENOS induction heating simulation?
- 3. 1. Scanning 3 • Simple and complex motion • Controllable velocity • Complex workpiece hardening
- 4. 4 • Uniform heating • Fast calculation for axial-symmetric geometries • Rad/s control 2. Rotation
- 5. 5 • Fast HF (300 kHz to multiple MHz) case calculation • Precise JH estimation at high frequencies • Current density distribution 3. HF Simulation
- 6. 6 • Choke heating • Link structure improvements 4. DC link choke (DC line choke)
- 7. 7 • Adjustable geometry • Optimal parameter solutions • Overnight sequence running 5. Design optimization
- 9. 9 • Constant and dynamic parameters • Current (amplitude) control • Voltage control • Frequency control 1. Power control
- 10. 10 • Carbon steels • Magnetic steels • Temperature dependent properties • Customizable materials • Extensive material library 2. Materials
- 11. 11 Results
- 12. 12 • Hardening profile filters • 2D/3D hardened zone visualization 1. Hardened profile
- 13. 13 • Temperature at point • Temperature over line • Time dependent plots 2. Temperature dynamics
- 14. 14 • Generator power requirements • Inductor inductance 3. Energy statistics Domain: workpiece Time Active Power [W] Magnetic Energy [J] Induced Current.Real [A] Induced Current. Imaginary [A] Induced Current. RMS [A] 1 169689.3906 0.984987 -19308.6582 -1590.401489 13699.51953 2 95613.51563 0.934306 -19272.01758 -1578.540894 13673.01074 3 91314.07031 0.784908 -19281.50391 -1543.946655 13677.72266 4 86741.70313 0.661708 -19536.25391 -1488.04248 13854.23145 5 81290.51563 0.508186 -19645.32227 -1367.611206 13924.96094 Domain: c1... Time Active Power [W] Apparent Power [VA] Magnetic Energy [J] Induced Current. Real [A] Induced Current. Imaginary [A] Voltage.Real [V] Voltage.Imaginary [V] Voltage.RMS [V] 1 20850.89063 1520770.125 0.181283 0 0 -58.7896 -757.998596 537.673401 2 20849.83984 1520279.25 0.181287 0 0 -58.460293 -757.779663 537.499817 3 20842.77148 1513710.25 0.181333 0 0 -56.267925 -754.66272 535.177368 4 20847.58203 1505146.75 0.181467 0 0 -53.881233 -750.556274 532.14978 5 20849.69141 1500635.5 0.181523 0 0 -51.355831 -748.482727 530.554749