Phase change material and electric heating phase change heat storage device using the phase change material

Abstract

The invention relates to a phase-change material, and an electric heating phase change thermal storage device employing the phase-change material. The phase-change material is prepared from paraffin and high density polyethylene. The electric heating phase change thermal storage device employing the phase-change material comprises an electric heating layer and a heat accumulator; the electric heating layer is arranged on the external surface of one side of the heat accumulator; the inner part of the heat accumulator is provided with a sealed cavity; and the sealed cavity is filled with the phase-change material. The electric heating phase change thermal storage device is quick in heating, and long in heating time, and is capable of saving energy.

Description

technical field [0001] The invention belongs to the field of electric heating, and in particular relates to a phase change material and an electric heating phase change heat storage device using the phase change material. Background technique [0002] In the current field of electric heating, in order to improve the heat storage capacity of the heat storage device, some phase change materials are often used as the heat storage material, but the traditional heat storage materials, such as paraffin, have a big defect, that is, when the endothermic melting becomes The viscosity in the liquid state is small, and the thermal storage device is often not absolutely sealed due to the limitation of the processing technology, which makes it easy to flow out or seep out when the thermal storage material becomes liquid, which causes great troubles to users. [0003] In recent years, in order to solve the above technical problems, some people use pure solid heat storage materials instead...

AI Technical Summary

Problems solved by technology

[0002] In the current field of electric heating, in order to improve the heat storage capacity of the heat storage device, some phase change materials are often used as the heat storage material, but the traditional heat storage materials, such as paraffin, have a big defect, that is, when the endothermic melting becomes The viscosity in the liquid state is small, and the thermal storage device is often not absolutely sealed due to the limitation of the processing technology, which leads to easy flow or seepage when the thermal storage material becomes liquid, which causes great troubles to users

[0003] In recent years, in order to solve the above technical problems, some people use pure solid heat storage materials instead of phase change materials, which can solve the leakage problem of phase change materials in liquid state, but the heat storage capacity of pure solid heat storage materials is relatively poor. In addition, pure The bonding between the solid heat storage material and the heat storage device is the contact between solids, and there are inevitably gaps in the middle, which results in poor heat transfer effect. Therefore, it is not a good idea to use pure solid heat storage materials instead of phase change materials. a good solution

[0004] In addition to the selection of heat storage materials, the heat transfer performance of traditional heat storage devices is also relatively poor. There is an urgent need for a phase change material with good heat transfer performance and not easy to leak in a liquid state and a heat transfer material used in conjunction with it. Heat storage device with good heat storage performance

Images