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A phase change heat storage strengthening device based on alternating magnetic field and its operation method

An operating method, alternating magnetic field technology, applied to heat storage equipment, indirect heat exchangers, heat exchanger types, etc.

Active Publication Date: 2021-05-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The promotion effect of natural convection on the melting / solidification process of phase change materials is relatively significant, but the existing phase change strengthening technologies limit the convection of liquid phase change materials to a certain extent while improving heat conduction, restricting its enhanced phase change. Effect

Method used

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  • A phase change heat storage strengthening device based on alternating magnetic field and its operation method

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Embodiment Construction

[0025] A preferred embodiment of the present invention provides a phase change heat storage strengthening device based on an alternating magnetic field and its operating method, such as figure 1 As shown, it specifically includes a first electromagnet 1, a second electromagnet 2, a power supply 3, a cycle delay relay 4, a heat storage housing 5, a phase change material 6, a magnetic particle 7, a heat transfer fluid channel 8, and a heat transfer fluid channel 8. Thermal fluid inlet 9 and heat transfer fluid outlet 10 .

[0026] According to the function, the phase change heat storage strengthening device can be divided into an alternating magnetic field generation part and a heat storage part.

[0027] Among them, the alternating magnetic field generation part includes the first electromagnet 1, the second electromagnet 2, the power supply 3 and the cycle delay relay 4, and the connection mode of each component is: the first electromagnet 1 and the second electromagnet 2 pass...

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Abstract

The invention discloses a phase change heat storage strengthening device based on an alternating magnetic field and an operation method thereof. The device includes a first electromagnet, a second electromagnet, a power supply, a cycle delay relay, a heat storage shell, a phase change material, magnetic particles, a heat transfer fluid channel, a heat transfer fluid inlet and a heat transfer fluid outlet. In the present invention, when the phase change material stores heat or releases heat, the first electromagnet and the second electromagnet work alternately under the action of the power supply and the cycle delay relay, and pull the magnetic particles to move up and down between the solid-liquid interface and the liquid state. The heat is transferred, and the magnetic particles will also drive the liquid phase change material to force convection. The invention strengthens the phase change process of the phase change material through two aspects of heat conduction and flow, and can significantly increase the phase change rate of the phase change material.

Description

technical field [0001] The invention relates to the field of heat exchange design enhancement, in particular to a phase change heat storage enhancement device based on an alternating magnetic field and an operating method thereof. Background technique [0002] With the rapid economic development of the current society, the energy crisis caused by the depletion of fossil energy is also gradually reflected, and the voice of increasing the proportion of renewable energy utilization is also getting louder. Renewable energy represented by solar energy and wind energy has the characteristics of discontinuous sources, so energy storage devices need to be configured in practical applications. [0003] Phase change materials have the advantages of high heat storage density, constant heat release temperature, good cycle stability and simple control, and can be widely used in solar heat storage, industrial waste heat utilization, building heat recovery and other fields. However, the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/02
CPCF28D20/021Y02E60/14
Inventor 范誉斌张学军赵阳余萌张春伟
Owner ZHEJIANG UNIV
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