A Basic Theory of Induction Heating for a Wind-Powered Thermal Energy System

Matsuo, Tetsuji; Okazaki, Toru

doi:10.1109/tmag.2017.2708744

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…Most of the authors refer to this concept as "eddy currents" [10,59,[69][70][71]76]. Further denominations are "induction heater" [78], "induction retarder" [9], "electromagnetic induction" [34,38,39], and "magnetic vortex" [28].…”

Section: Induction-based Windthermal Conversionmentioning

confidence: 99%

“…Proofs of concept (TRL 2) were conducted for induction and friction. Apparently, three researcher groups independently analyzed permanent eddy current magnets applying the finite element method [60,69,70,[72][73][74]76]. The optimal design of small-scale vertical-axis induction-based [78] and friction-based [66,67] windthermal converters were determined.…”

Section: Technology Maturity Of Windthermal Convertersmentioning

confidence: 99%

“…They make up to 15% of the total costs and up to 6% of the total weight of wind power converters [101]. In the absence of these requirements and conditions resulting from the use of generators, the following opportunities for windthermal turbines are identified: grid-independent operation [27,39,48], dispensability of gearboxes [54,76,102], operation at a wider range of wind speeds [27,31,38,46,48,53,78,91,102], less noises and fewer vibrations than conventional wind turbines due to lower turbine speeds [54,102], lower costs [9,34,60,102], lower nacelle weight [9,38,76,102], easier maintenance, and smaller breakdown possibility [76,102]. A novel transmission system can tenfold the transmission distance of district heating pipelines [27].…”

Section: Swot Analysis Strengthsmentioning

confidence: 99%

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State of the art of windthermal turbines: A systematic scoping review of direct wind-to-heat conversion technologies

Neumeier

Cöster

Pais

et al. 2021

Journal of Energy Resources Technology

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Windthermal turbines convert wind directly into thermal energy. Albeit it is an uncharted field of research, the overall system efficiency and costs of fully developed windthermal turbines are promising; since they can contribute to a sustainable energy transition. We identify the current state of the art of windthermal conversion principles, technology maturity, applications, substitutes, advantages and disadvantages. To scope relevant literature, we follow the Joanna Briggs Institutes selection and screening process resulting in 61 relevant publications from which we identified three main conversion types, namely compression-, friction-, and induction-based windthermal devices. These devices can directly supply thermal energy for space heating or industrial processes, work as a component of wind-powered thermal energy systems, short WTES, or can substitute any conventional or renewable heat device. Although heat is the lowest form of energy, windthermal applications could provide cheap renewable energy that can be stored easily enhancing security of supply. However, these technologies are currently on laboratory-scale, and we suggest scaling up the existing prototypes to engineering-scale. Finally, due to a missing general terminology, we propose to establish one of the terms windthermal energy, ventothermal energy or anemothermal energy to distinguish these specific wind energy conversion technologies.

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