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US 11,396,619 B2Granted
Phase-change material and method for producing same
OwnerMary Anne White, John Alexander Noëlinventors
Life of this patent
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Abstract
A method for producing a form-stable phase-change material includes freezing a slurry of solid and solvent to provide a frozen slurry, exposing the frozen slurry to conditions causing sublimation of the frozen solvent to remove solvent and provide a body having vacancies therein, sintering the body to provide a scaffold, and adding a molten phase-change material to the scaffold to provide the form-stable phase-change material. The same scaffold when ground acts as a phase-change nucleating aid.
Claims16
A method for producing a form-stable phase-change material, the method comprising:
- directionally freezing a slurry of solid and solvent, providing a frozen slurry including unidirectional pillars of frozen solvent that force suspended solid particles into interstices;
- exposing the frozen slurry to conditions causing sublimation of the solvent of the frozen slurry to remove frozen solvent and provide a body having pillars of vacancies therein;
- sintering the body to provide a scaffold including the pillars of vacancies therein;
- and
- adding a molten phase-change material to the scaffold such that the molten phase-change material is drawn into the pillars of vacancies by capillary action to provide the form-stable phase-change material with increased thermal conductivity relative to the phase-change material.
2 more elements
Dependencies are inferred from the claim text.