Electrocaloric cooling system utilizing latent heat transfer for high power density
Abstract Electrocalorics (EC) is potentially more efficient than refrigeration and heat pumps based on compressors and does not need detrimental fluids. Current EC-prototypes use solid-state contact or forced convection with liquids to transfer the heat generated from the EC-material, which inhibits...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-03-01
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| Series: | Communications Engineering |
| Online Access: | https://doi.org/10.1038/s44172-024-00199-z |
| _version_ | 1797247275451285504 |
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| author | Julius Metzdorf Patrick Corhan David Bach Sakyo Hirose Dirk Lellinger Stefan Mönch Frank Kühnemann Olaf Schäfer-Welsen Kilian Bartholomé |
| author_facet | Julius Metzdorf Patrick Corhan David Bach Sakyo Hirose Dirk Lellinger Stefan Mönch Frank Kühnemann Olaf Schäfer-Welsen Kilian Bartholomé |
| author_sort | Julius Metzdorf |
| collection | DOAJ |
| description | Abstract Electrocalorics (EC) is potentially more efficient than refrigeration and heat pumps based on compressors and does not need detrimental fluids. Current EC-prototypes use solid-state contact or forced convection with liquids to transfer the heat generated from the EC-material, which inhibits high cycle frequencies and thus limits power density. Here we present a heatpipe system solution, where the heat transfer is realized through condensation and evaporation of ethanol as a heat transfer fluid. Our prototype with lead scandium tantalate (PST) EC-material working at 5 Hz shows a specific cooling power of 1.5 W g−1. This is one order of magnitude more than previously reported for ceramic EC-prototypes. Overcoming the limits of slow heat transfer is essential to reach high specific cooling powers enabling a future commercial success of the technology. |
| first_indexed | 2024-04-24T19:56:06Z |
| format | Article |
| id | doaj.art-8a74283ccca74417a68ac97ad54650ab |
| institution | Directory Open Access Journal |
| issn | 2731-3395 |
| language | English |
| last_indexed | 2024-04-24T19:56:06Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Engineering |
| spelling | doaj.art-8a74283ccca74417a68ac97ad54650ab2024-03-24T12:22:22ZengNature PortfolioCommunications Engineering2731-33952024-03-01311610.1038/s44172-024-00199-zElectrocaloric cooling system utilizing latent heat transfer for high power densityJulius Metzdorf0Patrick Corhan1David Bach2Sakyo Hirose3Dirk Lellinger4Stefan Mönch5Frank Kühnemann6Olaf Schäfer-Welsen7Kilian Bartholomé8Fraunhofer Institute for Physical Measurement Techniques IPMFraunhofer Institute for Physical Measurement Techniques IPMFraunhofer Institute for Physical Measurement Techniques IPMMurata Manufacturing Co., Ltd.Fraunhofer Institute for Structural Durability and System Reliability LBFFraunhofer Institute for Applied Solid State Physics IAFFraunhofer Institute for Physical Measurement Techniques IPMFraunhofer Institute for Physical Measurement Techniques IPMFraunhofer Institute for Physical Measurement Techniques IPMAbstract Electrocalorics (EC) is potentially more efficient than refrigeration and heat pumps based on compressors and does not need detrimental fluids. Current EC-prototypes use solid-state contact or forced convection with liquids to transfer the heat generated from the EC-material, which inhibits high cycle frequencies and thus limits power density. Here we present a heatpipe system solution, where the heat transfer is realized through condensation and evaporation of ethanol as a heat transfer fluid. Our prototype with lead scandium tantalate (PST) EC-material working at 5 Hz shows a specific cooling power of 1.5 W g−1. This is one order of magnitude more than previously reported for ceramic EC-prototypes. Overcoming the limits of slow heat transfer is essential to reach high specific cooling powers enabling a future commercial success of the technology.https://doi.org/10.1038/s44172-024-00199-z |
| spellingShingle | Julius Metzdorf Patrick Corhan David Bach Sakyo Hirose Dirk Lellinger Stefan Mönch Frank Kühnemann Olaf Schäfer-Welsen Kilian Bartholomé Electrocaloric cooling system utilizing latent heat transfer for high power density Communications Engineering |
| title | Electrocaloric cooling system utilizing latent heat transfer for high power density |
| title_full | Electrocaloric cooling system utilizing latent heat transfer for high power density |
| title_fullStr | Electrocaloric cooling system utilizing latent heat transfer for high power density |
| title_full_unstemmed | Electrocaloric cooling system utilizing latent heat transfer for high power density |
| title_short | Electrocaloric cooling system utilizing latent heat transfer for high power density |
| title_sort | electrocaloric cooling system utilizing latent heat transfer for high power density |
| url | https://doi.org/10.1038/s44172-024-00199-z |
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