Economic Feasibility Study of an HTS DC Induction Furnace

Choi, Jung Hye; Go, Byeong-Soo; Kim, S. K.; Cho, S. H.; Park, H. J.; Moon, Heejong; Sim, Kideok; Park, M.; Yu, In-Keun

doi:10.1109/tasc.2016.2530758

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Conventional induction furnaces for preheating have an efficiency of 50-60% [84,85]. The novel induction furnace with high-temperature superconducting (HTS) magnets has been proposed to achieve a higher energy efficiency [84,85]. An alternating current version of the HTS induction furnace can achieve an estimated efficiency of 68.2% [85].…”

Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

“…An alternating current version of the HTS induction furnace can achieve an estimated efficiency of 68.2% [85]. A direct current version can achieve an efficiency above 90% [84]. A feasibility study has shown promising results for a direct current HTS induction furnace with a power of 300 kW or above [84].…”

Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

“…A direct current version can achieve an efficiency above 90% [84]. A feasibility study has shown promising results for a direct current HTS induction furnace with a power of 300 kW or above [84]. However, the investment rate of return showed that it is not worth investing in a capacity smaller than 60 kW at the moment [84].…”

Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

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Review of measures for improved energy efficiency in production-related processes in the aluminium industry – From electrolysis to recycling

Haraldsson

Johansson

2018

Renewable and Sustainable Energy Reviews

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The aluminium industry is facing a challenge in meeting the goal of halved greenhouse gas emissions by 2050, while the demand for aluminium is estimated to increase 2-3 times by the same year. Energy efficiency will play an important part in achieving the goal. The paper's aim was to investigate possible production-related energy efficiency measures in the aluminium industry. Mining of bauxite and production of alumina from bauxite are not included in the study. In total, 52 measures were identified through a literature review. Electrolysis in primary aluminium production, recycling and general measures constituted the majority of the 52 measures. This can be explained by the high energy intensity of electrolysis, the relatively wide applicability of the general measures and the fact that all aluminium passes through either electrolysis or recycling. Electrolysis shows a higher number of emerging/novel measures compared to the other processes, which can also be explained by its high energy intensity. Processing aluminium with extrusion, rolling, casting (shape-casting and casting of ingots, slabs and billets), heat treatment and anodising will also benefit from energy efficiency. However, these processes showed relatively fewer measures, which might be explained by the fact that to some extent, these processes are not as energy demanding compared, for example, to electrolysis. In many cases, the presented measures can be combined, which implies that the best practice should be to combine the measures. There may also be a future prospect of achieving carbon-neutral and coal-independent electrolysis. Secondary aluminium production will be increasingly important for meeting the increasing demand for aluminium with respect to environmental and economic concerns and strengthened competitiveness. Focusing on increased production capacity, recovery yields and energy efficiency in secondary production will be pivotal. Further research and development will be required for those measures designated as novel or emerging.

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Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

Section: General Measures -Hts Induction Furnacementioning

confidence: 99%

See 1 more Smart Citation

Review of measures for improved energy efficiency in production-related processes in the aluminium industry – From electrolysis to recycling

Haraldsson

Johansson

2018

Renewable and Sustainable Energy Reviews

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Analysis of Peak Electromagnetic Torque Characteristics for Superconducting DC Induction Heaters

Yang

Dai

et al. 2020

IEEE Access

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The efficiency of novel superconducting direct current (DC) induction heaters can be up to 80-90%. This is much higher than the 40-50% of conventional alternating current induction heaters. Induction heaters are used to preheat aluminum billets in extrusion pressing. Such devices use a driving motor to rotate the billet. A peak in the electromagnetic torque appears at low rotation speeds (of the motor). Therefore, this peak electromagnetic torque is of particular interest when designing the driving system, which is one of the main challenges for megawatt-class superconducting DC induction heaters. In this paper, the peak electromagnetic torque characteristics of different sized billets were analyzed. A numerical 3D finite element method model was built to analyze the peak electromagnetic torque and resistive heating power behavior of aluminum billets. The results obtained from simulations and experiments match well. The effect of the following five relative parameters, on electromagnetic torque and resistive heating power, were studied: billet diameter, billet length, magnetic flux density, billet material, and electrical conductivity. The peak electromagnetic torque increases nonlinearly with increasing billet diameter, up to 640 mm. The time elapsed between the peak to stable torque decreases nonlinearly with increasing magnetic flux density. The effects of billet material (copper, titanium alloy and stainless steel) on torque were analyzed and compared. These results are likely to guide more cost-effective and practical designs for the billet driving system of superconducting DC induction heaters. INDEX TERMS Superconducting DC induction heater, peak electromagnetic torque, aluminum billet, magnetic flux density.

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Digital Twin Empowered Operational Status Monitoring of High-Power Induction Furnaces: A PINN-Based Approach

Zhang,

Li,

Mao

2024

2024 IEEE 18th International Conference on Control &Amp;amp; Automation (ICCA)

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Economic Feasibility Study of an HTS DC Induction Furnace

Cited by 5 publications

References 14 publications

Review of measures for improved energy efficiency in production-related processes in the aluminium industry – From electrolysis to recycling

Review of measures for improved energy efficiency in production-related processes in the aluminium industry – From electrolysis to recycling

Analysis of Peak Electromagnetic Torque Characteristics for Superconducting DC Induction Heaters

Digital Twin Empowered Operational Status Monitoring of High-Power Induction Furnaces: A PINN-Based Approach

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