A cold storage material composition includes 1 mol % to 10 mol % of a metal salt; and 0.5 mol % to 5 mol % of an inorganic salt, wherein a eutectic point of the metal salt and water is −75° C. to −40° C., wherein a eutectic point of the inorganic salt and water is −30° C. or higher, and wherein the cold storage material composition is an aqueous solution and has a melting start point within a range from −75° C. to −40° C.

Cold storage material composition, cold storage material, and transport container

The purpose of the present invention is to provide a heat storage material which enables cooling utilizing latent heat at two different phase change temperatures. This heat storage material comprises: water; a hydrocarbon compound that forms a clathrate hydrate together with some of the water at a temperature of 0°C or more; and an inorganic compound that lowers the phase change temperature of the rest of the water to less than 0°C. Tetrahydrofuran, cyclohexane or a quaternary ammonium salt, which undergoes hydrophobic hydration with water, is used as the hydrocarbon compound in the heat storage material. In addition, a normal salt such as potassium chloride and sodium chloride, an acidic salt such as potassium hydrogen carbonate and sodium hydrogen carbonate, or a basic salt such as ammonium chloride hydroxide is used as the inorganic compound in the heat storage material.

Heat storage material and article using same

PROBLEM TO BE SOLVED: To provide a heat storage system capable of achieving a size reduction and ensuring high-density heat storage irrespective of the temperature of a heat source while eliminating holding means for holding a heat storage material.SOLUTION: A heat storage system comprises: an engine 1 generating heat and releasing the heat to cooling water; and a heat storage unit 2 storing the heat. The heat storage unit 2 is configured to change to a first phase state that is a solid state if a temperature of the heat storage unit 2 is equal to or lower than a phase transition temperature, and to change to a second phase state that is a solid state if the temperature of the heat storage unit 2 exceeds the phase transition temperature. Furthermore, the heat storage unit 2 is configured to store heat or release heat in response to a phase change between the first phase state and the second phase state, and to be able to be switched over between a heat storage mode for storing the heat of the cooling water in the heat storage unit 2 and a heat radiation mode for releasing the heat stored in the heat storage unit 2 to the engine 1.SELECTED DRAWING: Figure 1

Heat storage system

The invention discloses a cold storage plate for refrigeration transportation. The cold storage plate comprises a phase change material, a cold storage sheet material, a heat exchange sleeve and movable connectors, wherein the cold storage sheet material is internally filled with the phase change material; the phase change material is internally provided with the heat exchange sleeve; a cold medium inlet and a cold medium outlet of the heat exchange sleeve, which stretch out of the cold storage sheet material, are provided with the movable connectors respectively. According to the cold storage plate for the refrigeration transportation, the cold storage plate can be realized through improving on the basis of an original refrigerator car and only utilizing an original heat insulation plate; the cold storage plate is simple and also convenient.

Cold storage plate for refrigeration transportation

The invention relates to a method for producing a latent heat accumulator, in which a can body is filled with a phase-change material in the liquid or solid aggregate state, and in which the can body filled with said solid or liquid phase-change material is closed by means of flanging such that fluid cannot pass through.

Method for producing a latent heat accumulator

The invention aims to provide a heat-storage material which can prevent supercooling. The heat-storage material according to the invention includes: a heat-storage substance which reversibly changes between an aqueous solution containing tetraalkylammonium salt and a clathrate hydrate containing the tetraalkylammonium salt as a guest molecule; and alum which is added to the aqueous solution containing tetraalkylammonium salt. Tetrabutylammonium bromide is used as the tetraalkylammonium salt. Potassium alum or ammonium alum is used as the alum.

Heat-storage material, and heat-storage member, storage container, transportation/storage container, construction material, and architectural structure using the same

The purpose of the present invention is to provide a thermal storage medium in which an inorganic or water-based thermal storage material is formed into a gel. The thermal storage medium is provided with: a first gelling material; a second gelling material which has a different water retention capacity to that of the first gelling material, and which is mixed with the first gelling material; and an inorganic or water-based thermal storage material held in the first gelling material and the second gelling material. A synthetic polymer or gelatin is used in the first gelling material. A synthetic polymer or a natural polymer such as polysaccharide is used in the second gelling material.

Thermal storage medium

PROBLEM TO BE SOLVED: To quickly bring a cold insulation object to an appropriate temperatureSOLUTION: A heat storage pack 1 according to the present invention for controlling temperature of food and drink, comprising: a first deep-drawn container 3 filled with a first heat storage material 3a of which phase changes at a predetermined temperature; a second deep-drawn container 5 layered over the first deep-drawn container 3, and filled with a second heat storage material 5a which is kept in a liquid phase state at the phase change temperature of the first heat storage material 3a; and a lid material 7 for closing the first deep-drawn container 3 The second deep-drawn container 5 comes into contact with a wine bottle 10SELECTED DRAWING: Figure 1

Heat storage pack, heat exchange unit, and method for manufacturing heat storage pack

It is an object of the present invention to provide a thermal energy storage member having sufficient dissipation capabilities and a storage container using the same, and a refrigerator using the same. A thermal energy storage member 1 includes: a thin-plate outer shape having an opposing upper face 1 a and lower face 1 b ; a thermal energy storage material 3 filled in the inside of a package material 2 ; and a thermal conduction amount adjusting portion 4 that, in a case where difference occurs between temperature at the upper face 1 a side and temperature at the lower face 1 b side, reduces difference in thermal conduction amount per unit of time at the upper face 1 a and the lower face 1 b.

Sawada Daiji

Papers

Heat storage material and article using same

Heat-storage material, and heat-storage member, storage container, transportation/storage container, construction material, and architectural structure using the same

Thermal storage medium

Heat storage pack, heat exchange unit, and method for manufacturing heat storage pack

Thermal energy storage member and storage container using the same, and refrigerator using the same