COLD STORAGE MATERIAL UTILIZING LATENT HEAT

• Main Authors: KANO AKIRA, MAEDA JUNYA, KATSUO RYUJI, BABA TOSHIYUKI
• Format: Patent
• Language: English
• Published: 09.02.1999
• Edition: 6
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

PROBLEM TO BE SOLVED: To enable an adjustment of the melting point and a secure application in foods by incorporating at least one inorganic salt selected from sodium hydrogen carbonate, potassium hydrogen carbonate, ammonium hydrogen carbonate, disodium phosphate dodecahydrate and trisodium phosphate dodecahydrate into an aqueous solution of sodium chloride. SOLUTION: An aqueous solution of sodium chloride is employed as a cold storage medium, and the concentration thereof is 5-30 wt.%. The purity of sodium chloride is preferably 99% or higher. The inorganic salt employed as a melting point-adjusting agent can be securely used in the foods distribution fields and has advantages such as a high eutectic temperature, chemical inactivity with sodium chloride, a specific gravity not so different from that of sodium chloride, moderate solubility in water, cheapness and ease to buy, easy manageability, a small depression of a freezing point, a large heat of melting in a solution at a certain temperature. The amount of the inorganic salts is 1-30 wt.% based on the sum of the salts and the aqueous solution of sodium chloride, the amount of the aqueous solution of sodium chloride being 70-99 wt.%.