Heat accumulative material

摘要

A novel latent heat accumulative material capable of accumulating heat in a temperature range best suited for the storage of solar energy was obtained by adding an organic compound or compounds such as urea [CO(NH2)2]to a system consisting of sodium acetate (CH3CO2Na) and water (H2O). Further addition of a crystal nucleus forming material or materials such as sodium pyrophosphate decahydrate (Na4P2O7.10H2O) to said composition could minimize supercooling and allowed a wider scope of application of the present heat accumulative material.