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A phase change heat storage enhancement device based on a rotating magnetic field and its operating method

A phase-change heat storage and strengthening device technology, which is applied in heat storage equipment, heat transfer modification, heat exchange equipment, etc., to achieve high thermal conductivity, improve effective thermal conductivity, and increase the effect of phase change rate

Active Publication Date: 2020-08-11
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 enhancement device based on a rotating magnetic field and its operating method
  • A phase change heat storage enhancement device based on a rotating magnetic field and its operating method

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Embodiment Construction

[0026] A preferred embodiment of the present invention provides a phase change heat storage enhancement device based on a rotating magnetic field, such as figure 1 and 2 As shown, it specifically includes a rotating electrical machine 1, a transmission rod 2, a permanent magnet 3, a heat storage shell 4, a heat storage cavity 5, a phase change material 6, a magnetic particle 7, a heat transfer fluid inlet 8 and a heat transfer fluid exit 9.

[0027] According to the function, the phase change heat storage strengthening device can be divided into a dynamic magnetic field generation part and a heat storage part.

[0028] Among them, the dynamic magnetic field generation part includes a rotating motor 1, a transmission rod 2 and a permanent magnet 3, and the connection method is: the rotating motor 1 is vertically connected to the midpoint of the transmission rod 2, and then drives the transmission rod 2 to rotate horizontally with the midpoint as the rotation center , the perm...

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Abstract

The invention discloses a phase change heat storage reinforcing device based on a rotating magnetic field and an operation method thereof. The phase change heat storage reinforcing device comprises arotating motor, a transmission rod, a permanent magnet, a heat storage device outer casing, a heat storage device inner cavity, a phase change material, magnetic particles, a heat transfer fluid inletand a heat transfer fluid outlet. During heat storage or heat release of the phase change material, the permanent magnet rotates around a heat storage device at a uniform speed under the effect of the rotating motor; the magnetic particles in a liquid state part of the phase change material are towed to do circumferential motion around the central axis of the heat storage device; and the liquid state phase change material is driven to realize forced convection. The phase change process of the phase change material is reinforced in two aspects of heat conduction and flowing; and the phase change rate of the phase change material can be obviously improved.

Description

technical field [0001] The invention designs the enhanced heat exchange field, especially a phase change heat storage enhanced device based on a rotating magnetic field and its operating method. 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 thermal conductivity of phase change ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/02F28F23/00F28F13/12
CPCF28D20/021F28F13/125F28F23/00Y02E60/14
Inventor 范誉斌张学军赵阳张春伟余萌
Owner ZHEJIANG UNIV
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