Coupled electro-magneto-thermal model for induction heating process of a moving billet

Cho, Kee-Hyeon

doi:10.1016/j.ijthermalsci.2012.05.003

Cited by 43 publications

(15 citation statements)

References 20 publications

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“…As there are no previous studies on the methods for evaluating the dismantlement of concrete members quantitatively, in most cases, qualitative evaluations such as "difficult to dismantle" are defined without evaluating the time or energy required for dismantling. Therefore, the data is not reliable as reproductive data in reviewing the expenses for dismantling or environmental load [20].…”

Section: Experimental Overviewmentioning

confidence: 99%

Development of Eco-Friendly Deconstruction Technologies for Recycling Construction Waste

Lim¹,

Choi²,

Choi³

et al. 2014

JEP

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Recently, the intended use and required performance of buildings are rapidly changing with advances in scientific technology and globalization. Furthermore, given the population growth in semi-developed and developing countries, economic growth, increasing waste, and increasing amounts of energy consumption, the industry requires the development of efficient methods to deconstruct old buildings by reducing waste and saving as much energy as possible during periods of urban redevelopment and maintenance. In general, either an ordinary breaker or a hydraulic breaker is used to deconstruct reinforced concrete buildings. This deconstruction method has the ability to shorten the construction period compared to the other methods, but it is difficult to separate the debris that gets mixed when the deconstruction is completed, as it is a rough construction method that uses large equipment. This study develops a technology that can be used to selectively heat, separate, and deconstruct the steel reinforcement inside reinforced concrete, treating the reinforcement as a conductive resistor and applying high-frequency induction heating to the reinforced concrete structure. Specifically, this study verifies the temperature characteristics of deformed bars inside reinforced concrete, the occurrence of cracks due to thermal fracture of the deformed bars, and chemical and physical weakening of concrete by thermal conduction on the surface of steel reinforcement using the high-frequency induction heating technology. Furthermore, this study considers the extent of concrete weakening in the heating range of appropriate energy and carries out a technical review of the stages that would be actually applied. This technology involves low noise and low pollution levels, and it increases the collection rate of steel reinforcement inside separated reinforced concrete members and the recycling rate of construction wastes; thus, * Corresponding author. M. Lim et al. 648its use is expected to reduce the energy consumption by minimizing secondary processing.

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Section: Experimental Overviewmentioning

confidence: 99%

Development of Eco-Friendly Deconstruction Technologies for Recycling Construction Waste

Lim¹,

Choi²,

Choi³

et al. 2014

JEP

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“…The nonlinear dependence of magnetic field induction on its strength in ferromagnetic bodies considerably complicates the calculation of heat release. The existing methods for calculating the induction heating equipment have the following disadvantages: 1) the use of engineering calculation methods [1] based on the solution of Maxwell's linear equations in onedimensional formulation, using empirical data does not allow for production and analysis of the specific heat distribution in ferromagnetic bodies of a complex shape; 2) the use of simplified mathematical models of induction heating process do not take into account the non-linearity characteristics of ferromagnetic materials [2,3] and can lead to significant errors in calculating the heat generation by eddy currents; 3) the approximation of the inductor geometry by the bodies of canonical shape [4] leads to large errors in most practical problems.…”

Section: Statement Of the Problemmentioning

confidence: 99%

Modeling of induction heating equipment for the vulcanization process

2017

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“…Many scholars have made extensive research on the numerical simulation of induction heating. Most scholars have studied the induction heating of billet and cylinder blank [3]- [6], but it also lacks in-depth study on slab. As slabs in today's industrial production has an expanding market.…”

Section: A Slab Induction Heating Backgroundmentioning

confidence: 99%

Computer Simulation of Induction Heating Process of Hot Rolled Slab

Xing¹,

Xu²,

He³

2017

IJEETC

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In this paper, the three-dimensional dynamic model of slab induction heating and soaking process is established by finite element method. Two different width to thickness ratio slabs are simulated at contant speed through the heating process of the inductor and the subsequent soaking process. Then the temperature field diagram of induction heating and soaking at different moments was obtained, and the regularity and characteristics of temperature change during induction heating were analyzed. Finally the following conclusions are obtained, (1)the greater the width to thickness ratio of the slab, the greater the temperature difference after induction heating, (2)the reasonable setting of the soaking period will help the slab temperature tend to be uniform, and (3)the addition of the insulation cover can effectively delay the slab cooling.  Index Terms-slab induction heating, finite element method, numerical simulation Cheng-Xiao Ming was born in Anhui Province, China, in 1992. Currently studying at the Automation College of Hangzhou DianZi University The direction of the study during the master is the slab induction heating modeling and simulation Xu-Zhe , male, Zhejiang, professor, master guide, the main research areas are system modeling and optimization control, data mining, etc.

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Coupled electro-magneto-thermal model for induction heating process of a moving billet

Cited by 43 publications

References 20 publications

Development of Eco-Friendly Deconstruction Technologies for Recycling Construction Waste

Development of Eco-Friendly Deconstruction Technologies for Recycling Construction Waste

Modeling of induction heating equipment for the vulcanization process

Computer Simulation of Induction Heating Process of Hot Rolled Slab

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