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A cascaded phase change plate heat storage and heat exchange integrated device

A phase change heat storage and phase change technology, which is applied in heat storage equipment, indirect heat exchangers, heat exchanger types, etc., can solve the problems of low heat transfer efficiency of phase change materials, improve the equivalent thermal conductivity, overcome The effect of low thermal conductivity and fast heat transfer rate

Active Publication Date: 2021-02-19
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the heat transfer efficiency of the phase change material is low. The combination of high energy storage density of heat storage and heat exchanger can not only realize the direct heat exchange of cold and hot fluids, but also realize the indirect heat exchange of cold and hot fluids through phase change materials, optimize the structural design, and promote the formation of phase change material layers naturally. Convection cycle, significantly improving the heat transfer efficiency of the phase change heat storage heat exchanger, and can maximize the use of solar heat

Method used

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  • A cascaded phase change plate heat storage and heat exchange integrated device
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  • A cascaded phase change plate heat storage and heat exchange integrated device

Examples

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Embodiment 1

[0036]A cascaded phase change plate heat storage and heat exchange integrated device, including a phase change heat storage layer, a cold fluid horizontal channel layer is arranged on the phase change heat storage layer, a hot fluid horizontal channel layer is arranged under the phase change heat storage layer, and the hot fluid horizontal channel layer is arranged under the phase change heat storage layer. A cold fluid horizontal channel layer is arranged under the channel layer to form a set of cold fluid horizontal channel layer-phase change heat storage layer-hot fluid horizontal channel layer-cold fluid horizontal channel layer-phase change heat storage layer-hot fluid from top to bottom The basic structure of the horizontal channel layer; the phase change thermal storage layer, the cold fluid horizontal channel layer, and the hot fluid horizontal channel layer are separated by metal plates; the phase change thermal storage layer includes a phase change thermal storage laye...

Embodiment 2

[0046] A cascaded phase change plate heat storage and heat exchange integrated device, including a phase change heat storage layer, a cold fluid horizontal channel layer is arranged on the phase change heat storage layer, a hot fluid horizontal channel layer is arranged under the phase change heat storage layer, and the hot fluid horizontal channel layer is arranged under the phase change heat storage layer. A cold fluid horizontal channel layer is arranged under the channel layer to form a set of cold fluid horizontal channel layer-phase change heat storage layer-hot fluid horizontal channel layer-cold fluid horizontal channel layer-phase change heat storage layer-hot fluid from top to bottom The basic structure of the horizontal channel layer; the phase change thermal storage layer, the cold fluid horizontal channel layer, and the hot fluid horizontal channel layer are separated by metal plates; the phase change thermal storage layer includes a phase change thermal storage lay...

Embodiment 3

[0054] Compared with Example 1, the main difference between Example 3 is that each layer of phase change heat storage material is individually packaged in a sealed box, and the cold and hot fluid pipelines do not pass through the sealed box of the phase change heat storage layer. Others are consistent with Example 1. , Replacement of the phase change heat storage layer in the device can directly replace the phase change heat storage layer of each layer of the overall package, more flexible change of the heat storage capacity of the device, easy disassembly and cleaning, and easier assembly and use of the device.

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Abstract

The invention discloses a cascade phase change plate type heat storage and heat exchange integrated device. The cascade phase change plate type heat storage and heat exchange integrated device comprises basic structures of cold fluid horizontal channel layers, phase change heat storage layers, hot fluid horizontal channel layers, cold fluid horizontal channel layers, phase change heat storage layers and hot fluid horizontal channel layers from top to bottom; the phase change heat storage layers, the cold fluid horizontal channel layers and the hot fluid horizontal channel layers are separatedthrough metal plates; and the multiple groups of basic structures are stacked up and down and are connected for use through cold fluid pipelines and hot fluid pipelines. According to the cascade phasechange plate type heat storage and heat exchange integrated device, the high heat exchange rate of a plate heat exchanger and the large energy storage density of a phase change heat storage heat exchanger are combined, so that direct heat exchange of cold fluid and hot fluid can be realized, in addition, indirect heat exchange of the cold fluid and the heat fluid through a phase-change material can be realized, the structural design is optimized, phase change material layers are promoted to form natural convection circulation, the heat exchange efficiency of the phase-change heat storage heatexchanger is remarkably improved, and solar light and heat can be utilized to the maximum extent.

Description

technical field [0001] The invention relates to the field of heat storage and heat release equipment, in particular to a cascaded phase change plate type integrated heat storage and heat exchange device. Background technique [0002] The fossil energy crisis and environmental protection urgently require the improvement of energy utilization efficiency and vigorous development and utilization of renewable green new energy. Among renewable new energy sources, the utilization of solar energy is favored, and remarkable results have been achieved in the application of solar photovoltaics, but the application of solar thermal energy is almost limited to solar water heaters, and the application of solar heating and solar drying is just in its infancy . For my country's severe cold, cold, hot summer and cold winter regions, heating in winter needs to consume a lot of energy every year. If the heating in winter can make full use of solar heat, it will significantly reduce the consum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/02
CPCF28D20/026Y02E60/14Y02E70/30
Inventor 王梅杰陈园园朱珂
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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