Solar inorganic energy storage material and preparation method and application thereof

Abstract

The invention discloses a solar inorganic energy storage material and a preparation method thereof, the solar inorganic energy storage material comprises the following raw materials by weight: 28-32 parts of anhydrous magnesium chloride, 18-21 parts of anhydrous calcium chloride, 50 parts of water, 10 parts of aluminum hydroxide, 5 parts of iron oxide, 5 parts of zinc oxide, 80 parts of phosphoric acid, 1 part of alumina, 1 part of calcium oxide, and 1 part of silica. The solar inorganic energy storage material disclosed by the invention is low in cost, high in enthalpy value and low in heat conductivity coefficient, belongs to an efficient thermal-insulation energy-saving material, has the enthalpy value of 3,500 J / g and the phase transition temperature of 25 + / -3 DEG C, is waterproof and fireproof, and has the heat conductivity coefficient of 0.0119 W / (m.k). The solar inorganic energy storage material has wide application prospects in the fields of solar heat utilization, waste heat recovery, electric power peak load shifting, heat management systems, building energy conservation and the like, has the characteristics of high latent heat storage density, no supercooling or superheating and the like, and shows wide application prospects in the field of clean energy application.

Description

technical field

[0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a solar inorganic energy storage material and a preparation method and application thereof. Background technique

[0002] Solar energy is a huge treasure house of energy, and it is a clean energy to solve the current energy crisis and environmental pollution. However, the energy density of solar radiation reaching the earth's surface is low, and it is restricted by factors such as geography, seasons, day and night, and weather changes, showing its rarity. , discontinuity and instability. In order to ensure the stable and uninterrupted operation of heating or power supply devices, it is necessary to use phase change heat storage devices to store energy when the energy is abundant and release it when the energy is insufficient. The phase-change heat storage materials in solar thermal power generation heat storage systems are mainly high-temperature water va...