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Heat flowing from cold to hot without external intervention by using a 'thermal inductor'


Schilling, Andreas; Bossen, Olaf (2018). Heat flowing from cold to hot without external intervention by using a 'thermal inductor'. arXiv 1804.06405, University of Zurich.

Abstract

The cooling of a quantity of boiling water all the way down to freezing by simply thermally connecting it to a thermal bath held at ambient temperature without external intervention would be quite unexpected. We describe the equivalent of a 'thermal inductor' composed of a Peltier element and an electric inductance, which can drive the temperature difference between two bodies to change sign by imposing a certain inertia on the flow of heat, thereby enabling continuing heat transfer from the chilling body to its warmer counterpart. We show theoretically and experimentally that such a process is possible and fully complies with the second law of thermodynamics. With further progress in thermoelectric materials, it could serve to cool hot materials well below ambient temperature without external energy supply.

Abstract

The cooling of a quantity of boiling water all the way down to freezing by simply thermally connecting it to a thermal bath held at ambient temperature without external intervention would be quite unexpected. We describe the equivalent of a 'thermal inductor' composed of a Peltier element and an electric inductance, which can drive the temperature difference between two bodies to change sign by imposing a certain inertia on the flow of heat, thereby enabling continuing heat transfer from the chilling body to its warmer counterpart. We show theoretically and experimentally that such a process is possible and fully complies with the second law of thermodynamics. With further progress in thermoelectric materials, it could serve to cool hot materials well below ambient temperature without external energy supply.

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Additional indexing

Item Type:Working Paper
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:18 April 2018
Deposited On:25 Jan 2019 13:00
Last Modified:28 Oct 2019 08:27
Series Name:arXiv
ISSN:2331-8422
OA Status:Green
Free access at:Official URL. An embargo period may apply.
Official URL:https://arxiv.org/ftp/arxiv/papers/1804/1804.06405.pdf

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