INERT MIXTURE AND ITS USE AS PHASE CHANGE MATERIAL FOR HIGH TEMPERATURE APPLICATIONS

This invention relates to an inert mixture comprising: - at least one polyol selected from the group consisting of: glycerol, erythritol, mannitol, pentaerythritol, xylitol, dulcitol, sorbitol, ribitol, maltitol, and inositol; - at least one inorganic salt, said inorganic salt being of at least one metal selected from the group consisting of: lithium, sodium, potassium, calcium, magnesium, strontium, barium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, and aluminum and at least one anion selected from the group consisting of: a halide, a silicate, and a sulfate; and - at least one hydroxylated compound selected from the group consisting of: trimethylolpropane, menthol, neopentyl alcohol, and guaiacol; wherein: - the mole ratio between the at least one polyol and the at least one inorganic salt is in the range from 99:1 to 50:50; and - the amount of said at least one hydroxylated compound is in the range from 1 % to 20% by weight, with respect to the total weight of the inert mixture. and the use thereof to accumulate thermal energy.