METHODE DE PREVENTION DE LA SURFUSION D'UNE COMPOSITION DE STOCKAGE DE CHALEUR LATENTE ET MATERIEL FAISANT APPEL A CETTE COMPOSITION

The invention provides a method for preventingsupercooling of a latent heat storage compositioncomprising one peritectic salt hydrate selected from thegroup consisting of disodium hydrogenphosphate dodecahydrate,sodium thiosulfate pentahydrate, sodium carbonatedecahydrate and sodium acetate trihydrate, water and awater-swellable crosslinking polymer. The latent heatstorage composition has a constitution such that atemperature of secondary nucleation of the peritectic salthydrate is higher than a temperature of secondary nucleationof a lower hydrate, and a part of the latent heat storagecomposition is always kept at a temperature the same as orlower than a melting point of the peritectic salt hydrate.