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Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis

Belik, Sergej and Khater, Omar and Zunft, Stefan (2023) Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis. Applied Sciences, 13(4) (2311), pp. 1-23. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/app13042311. ISSN 2076-3417.

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Official URL: https://www.mdpi.com/2076-3417/13/4/2311


The development of energy-efficient Power-to-Heat (PtH) technologies with high power density on a utility scale is a key element in the future of flexible energy systems. Although existing solutions for electric flow heaters (EFH) based on resistance heating have a high efficiency, the process outlet temperature and power output are limited by the lifetime of the contact heating elements. Inductively heated packed bed heaters can achieve higher gas outlet temperatures with a higher power density, which is essential for an efficient process. This paper focuses on the modeling, experimental validation and numerical analysis of inductively heated pebble bed gas heater. Foremost, a model that is based on a 3D finite volume method approach is introduced. After that, an experimental setup for different sphere arrangements is used to obtain results for concept verification and model validation. With the model validated, the design space for the PtH concept is investigated by varying the heat transfer area and material properties of the pebble bed. Design solutions with high energy efficiency above 90% and power density over 5.5 MW/m3 are presented for magnetic as well as non-magnetic materials at laboratory and utility scale.

Item URL in elib:https://elib.dlr.de/194172/
Document Type:Article
Title:Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Belik, SergejUNSPECIFIEDhttps://orcid.org/0000-0002-5424-1585UNSPECIFIED
Zunft, StefanUNSPECIFIEDhttps://orcid.org/0000-0002-8499-3067UNSPECIFIED
Date:10 February 2023
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-23
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Enhanced Heat Transfer and Advanced Energy Conversion Technology
Keywords:power-to-heat; electric flow heater; induction gas heater; packed bed; numerical analysis
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Belik, Sergej
Deposited On:10 Mar 2023 10:39
Last Modified:10 Mar 2023 10:39

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