Novel inorganic normal-temperature phase-change energy-storing material for facility agricultural temperature control as well as preparation method thereof

Abstract

The invention discloses a novel inorganic normal-temperature phase-change energy-storing material for facility agricultural temperature control and relates to the technical field of an inorganic material. The phase-change energy-storing material comprises the following components in percentage by mass: 13 to 17 percent of sodium thiosulfate pentahydrate, 18 to 22 percent of calcium chloride hexahydrate, 16 to 20 percent of sodium carbonate decahydrate, 6 to 10 percent of sodium chloride, 11 to 15 percent of magnesium sulfate heptahydrate, 11 to 15 percent of perlite, 3 percent of iron powder,6 to 10 percent of coal ash and 2 to 4 percent of water. The preparation method comprises the steps of mixing the materials, stirring and the like. The sodium thiosulfate pentahydrate, the calcium chloride hexahydrate, the sodium carbonate decahydrate, the sodium chloride and the magnesium sulfate heptahydrate serve as the main components of the phase-change material, the water, the iron powder, the coal ash, the perlite and the like are added to serve as additives, the supercooling degree of the phase-change material is reduced, the phase-change material can be preserved at normal temperature, the phase-change latent heat is high and the heat release quantity is large.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a novel inorganic normal-temperature phase-change energy storage material for temperature control in facility agriculture. Background technique [0002] Phase change materials, due to their high latent heat, are used as energy storage materials. The heat released by the material during the phase change process can be used as a heat storage material when used for heating and heat preservation; the material absorbs heat during the phase change process and can be used as a cold storage material when used for cooling. Phase change materials are widely used in aerospace, construction, medical care and other fields. Inorganic hydrated salt phase change materials have high phase change latent heat, most of these materials have a phase change latent heat greater than 200kJ / kg, and the phase change temperature distribution is between 0 and 100°C, which is the most commonly us...

AI Technical Summary

Problems solved by technology

The inorganic phase change material will not produce supercooling phenomenon and phase separation phenomenon, but the phase change latent heat of this kind of phase change material is low, and needs to be improved.

Images