Composite material based on microwave heating, heat storage system and operation method thereof

Abstract

The invention discloses a composite material based on microwave heating, a heat storage system and an operation method thereof. The composite material comprises a heat storage phase change material and a wave absorption material, wherein the mass ratio of the heat storage phase change material to the wave absorption material is 1 to (0.01-0.02); the heat storage phase change material and the waveabsorption material are heated, melted or mixed to prepare the composite material; and heat storage temperature of the composite material heated by microwave is 91-607 DEG C. According to the heat storage system, new energy or off-peak electricity is used for supplying power to a microwave system; the microwave environment is used for heating the composite material and storing heat; the heated heat is supplied to user sides through circulation heating water; the heat storage system is green and environmentally friendly, is low in cost and rapid in heat storage, and is taken as an extremely promising new mechanism.

Description

technical field [0001] The invention belongs to the technical field of heat storage of phase change materials, and in particular relates to a composite material based on microwave heating, a heat storage system and a working method thereof. Background technique [0002] At present, coal is the main fuel for heating in winter in northern China. However, with the development of heating technology and equipment, heating methods are gradually diversified, and the structure of heating energy has also undergone some changes. At present, the heating area using gas, oil, and electricity as heating energy is increasing year by year, and is accepted by more and more people. The heating energy structure composed of coal, gas, oil, and electricity is becoming more and more reasonable. [0003] The heating mechanism currently used is: traditional electric heating - heat storage system - heating water - users. Among them, there are mainly the following problems: [0004] 1) Electricity ...

AI Technical Summary

Problems solved by technology

[0004] 1) Electricity is still dominated by thermal power, which contains sulfur, nitrogen and other elements, pollutes the environment, and emits a large amount of greenhouse gases at the same time, which does not conform to the idea of ​​green environmental protection;

[0005] 2) Using conventional heating technology, the electric furnace wire is bundled outside the heat storage material. The resistance wire heating process only heats the surface of the heat storage material. There is a problem of uneven heating (ie, temperature gradient), the external temperature is too high, and the internal temperature has not yet reached Requirements, the heat storage material cannot fully store heat, resulting in a heat storage density much lower than the theoretical design value, and the excessively high external temperature will reduce the service life of the heat storage material;

[0006] 3) Even if a heat conducting agent is added to the heat storage material, there is still the problem that the heat energy cannot be transferred to the inside, and the proportion of the heat storage material is reduced, resulting in a decrease in the heat storage density of the heat storage material

Images