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Micro-magnetocaloric device

A technology of magnetocaloric and magnetocaloric materials, which is applied to the core of the direction, as well as the field of magnetocaloric and magnetocaloric devices, can solve the problems of increasing pressure loss and affecting the efficiency of the device, and achieve the effect of high energy efficiency

Inactive Publication Date: 2018-02-27
UNIVERSITY OF LJUBLJANA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, the pressure loss in this structure becomes large
Especially if the device has to be operated with a high number of thermodynamic cycles per unit time (e.g. above 5 Hz) and at the same time provide a predetermined temperature difference between the heat source and heat sink, this can greatly affect the efficiency of the device

Method used

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  • Micro-magnetocaloric device
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Embodiment Construction

[0059] In the following description of various embodiments, reference is made to the accompanying drawings, wherein like reference numerals indicate like or corresponding elements. The drawings are not necessarily to scale. Rather, certain features may be shown exaggerated in scale or in some simplified or schematic fashion, where certain conventional elements may have been omitted in order to illustrate the principles of the invention rather than to obscure the understanding. The details of these principles come to clutter the drawings.

[0060] It should be noted that unless otherwise stated, different features or elements may be combined with each other whether or not they have been described together as part of the same embodiment below. Combinations of features or elements in the exemplary embodiments are done to facilitate the understanding of the invention, not to limit the scope thereof to a limited set of embodiments, and to show alternative elements having substanti...

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Abstract

A magnetocaloric device (1), comprises: at least one magnetocaloric material (5) embedded between two heat transfer structures (TDhot, TDcold); at least one electric source for generating a magnetic field; and at least one hydraulic circuit in which the working fluid flows in a constant direction and which comprises at least one propulsion means (6) for the working fluid, wherein the heat transferstructures (TDhot, TDcold) are adapted to control the transfer or transport of heat between the magnetocaloric material (5) and the working fluid.

Description

Background technique [0001] The present invention relates to a magnetocaloric device for refrigeration, heat pump or power generation applications. [0002] figure 1 A schematic diagram of a generic resistive magnet M is shown. Here, the thickness of the gap between the magnetic poles of the magnetic field is represented by d. Now, for a fixed width and length of the gap, and for a fixed desired flux density of the gap, it can be calculated that the mass and volume of the magnetic field increases by order 3 as the thickness d increases. [0003] based on figure 2 , so it can be concluded that the thickness of the gap should be as small as possible while keeping the power input as small as possible (as this limits the energy efficiency of the resistive magnetic field source). Therefore, it would be better to implement multiple miniature magnetic field sources than a single magnetic field source with a larger gap thickness and occupying the same volume. Of course, the mini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/00F25B21/02
CPCF25B21/00F25B21/02F25B2321/02F25B2321/0023Y02B30/00H10N15/20
Inventor 安德烈·基塔诺夫斯基布拉日·耶伦乌尔班·托姆茨阿洛伊兹·波雷多斯
Owner UNIVERSITY OF LJUBLJANA