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Machine translation
1. (WO1981001859) CHANGE OF STATE ENTHALPY THERMAL ACCUMULATOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001859    International Application No.:    PCT/DE1980/000191
Publication Date: 09.07.1981 International Filing Date: 22.12.1980
IPC:
C09K 5/06 (2006.01)
Applicants:
Inventors:
Priority Data:
2952166 22.12.1979 DE
Title (EN) CHANGE OF STATE ENTHALPY THERMAL ACCUMULATOR
(FR) ACCUMULATEUR THERMIQUE A ENTHALPIE DE CHANGEMENT DE PHASE
Abstract: front page image
(EN)The thermal accumulator comprises an assembly of substances having several change of state, particularly disodium phosphate with 12 water molecules, a tridimensional molecular structure stabilizer which forms tubular or network-like inclusion compounds, a crystallisation accelerator having a high cange of state temperature, such as tetrasodium diphosphate with 12 water molecules and a dispersing agent, such as sodium pyrophosphate. Mixtures of glucoside bond polysaccharides and (Alpha)-1,4-glucane are particularly appropriate as stabilizers. Furthermore, the accumulator may appropriately contain cross linking agents, such as methanol, ethanol and particularly formaldehyde as well as epitaxial inoculation crystals such as sodium thiosulfate crystals with 5 water molecules. The so defined thermal accumulator is advantageously obtained according to a process wherein the different components are subjected to ultrasonic waves of a frequency comprised between 30 and 60 Hz at a temperature comprised between 40 and 60 C. In order to extend the useful life of the accumulator, a bacteriostatic substance and a specific enzyme inhibitor may further by added.
(FR)L"accumulateur thermique comprend un ensemble de substances ayant plusieurs points de changement de phase, en particulier du phosphate disodique avec 12 molecules d"eau, un stabilisateur a structure moleculaire tridimensionnelle qui forme des composes d"inclusion tubulaires ou reticulaires, un accelerateur de cristallisation ayant un point eleve de changement de phase, tel que du diphosphate tetrasodique avec 12 molecules d"eau et un agent de dispersion, tel que le pyrophosphate sodique. Des melanges de polysaccharides a liaison glucosidique et de (Alpha)-1,4-glucane sont particulierement bien adaptes comme stabilisateurs. De plus, l"accumulateur peut contenir avantageusement des reticulants, tels que le methanol, l"ethanol et en particulier le formaldehyde ainsi que des cristaux d"inoculation epitaxiaux tels que des cristaux de thiosulphate de sodium avec 5 molecules d"eau. L"accumulateur thermique ainsi defini est avantageusement obtenu selon un procede selon lequel les differents composants sont soumis a des ultrasons d"une frequence comprise entre 30 et 60 Hz et a une temperature comprise entre 40 et 60 C. Afin de prolonger la vie utile de l"accumulateur, on peut ajouter, en outre, une substance bacteriostatique et un inhibiteur enzymatique specifique.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)