Novel low temperature heat accumulator element

Abstract

The invention discloses a novel low temperature alloy heat accumulator element. The heat accumulator comprises a heat accumulation container and a heat accumulation material. Fluorine-contained alkane polymers are adopted creatively as the material of the heat accumulation container, tin-lead alloy and other low-melting-point alloy serve as the heat accumulation material, the corrosion or reaction problem between the metal or alloy heat accumulation material and the material of the heat accumulation container is effectively solved, effective sealing of the heat accumulation material is achieved, and the problem that leakage affects the environment is prevented. Meanwhile, the advantages that as the heat accumulation material, the metal and alloy are large in latent heat of phase change, high in heat conductivity, good in heat stability and the like are fully played; and accordingly, the novel low temperature heat accumulator element is widely applied, and the application value is achieved.

Description

technical field [0001] The invention belongs to the field of thermal energy storage, and in particular relates to a novel low-temperature (0-250° C.) alloy regenerator element. Background technique [0002] The essence of material heat storage is that it can store a certain form of heat under specific conditions, and can be released and utilized under specific conditions, so it can achieve the goal of consistency between energy supply and people's needs, and achieve energy saving and reduction. Consumption effect. It is this nature that determines that heat storage materials must have the characteristics of good reversibility, high energy storage density, and strong operability. [0003] According to the way of heat storage, heat storage materials can generally be divided into: [0004] (1) Sensible heat type: When sensible heat type heat storage materials store and release heat energy, the material itself only undergoes temperature changes without any other changes. The ...

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Problems solved by technology

However, there are usually two problems in this type of material. One is the supercooling phenomenon, which prevents the phase transition of the material in time, causing the crystallization point to lag and the nucleation rate to decrease.

Second, phase separation occurs, resulting in inhomogeneity of dissolution, resulting in a gradual decline in energy storage capacity.

The container material must be inert to the metal phase change material, and the container must be sealed to prevent leakage from affecting the environment and causing harm to personnel

However, metal or alloy heat storage materials are usually strongly corrosive or react with the container, making it difficult to find suitable container materials, which largely restricts the practical application of metals.

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