Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis
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 outle...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/4/2311 |
| _version_ | 1797622533617352704 |
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| author | Sergej Belik Omar Khater Stefan Zunft |
| author_facet | Sergej Belik Omar Khater Stefan Zunft |
| author_sort | Sergej Belik |
| collection | DOAJ |
| description | 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/m<sup>3</sup> are presented for magnetic as well as non-magnetic materials at laboratory and utility scale. |
| first_indexed | 2024-03-11T09:12:38Z |
| format | Article |
| id | doaj.art-12a97cedbfc64b9c913a6acd7dd9907c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:12:38Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-12a97cedbfc64b9c913a6acd7dd9907c2023-11-16T18:53:57ZengMDPI AGApplied Sciences2076-34172023-02-01134231110.3390/app13042311Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental AnalysisSergej Belik0Omar Khater1Stefan Zunft2Institute of Engineering Thermodynamics, German Aerospace Center (DLR), 70569 Stuttgart, GermanyInstitute of Engineering Thermodynamics, German Aerospace Center (DLR), 70569 Stuttgart, GermanyInstitute of Engineering Thermodynamics, German Aerospace Center (DLR), 70569 Stuttgart, GermanyThe 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/m<sup>3</sup> are presented for magnetic as well as non-magnetic materials at laboratory and utility scale.https://www.mdpi.com/2076-3417/13/4/2311power-to-heatelectric flow heaterinduction gas heaterpacked bednumerical analysis |
| spellingShingle | Sergej Belik Omar Khater Stefan Zunft Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis Applied Sciences power-to-heat electric flow heater induction gas heater packed bed numerical analysis |
| title | Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis |
| title_full | Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis |
| title_fullStr | Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis |
| title_full_unstemmed | Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis |
| title_short | Induction Heating of a Fluidized Pebble Bed: Numerical and Experimental Analysis |
| title_sort | induction heating of a fluidized pebble bed numerical and experimental analysis |
| topic | power-to-heat electric flow heater induction gas heater packed bed numerical analysis |
| url | https://www.mdpi.com/2076-3417/13/4/2311 |
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