Thermal storage medium using a hydrate and apparatus thereof, and method for producing the thermal storage medium

A hydrate cold thermal storage transporting medium comprising:

• an aqueous solution containing a guest compound to generate hydrate particles to create a hydrate slurry by cooling;
• and
• a corrosion inhibitor having a concentration of 5,000 wt. ppm or less.

A hydrate thermal storage medium comprising an aqueous solution containing a guest compound which generates by cooling the aqueous solution at least one hydrate selected from the group consisting of a primary hydrate and a secondary hydrate, wherein the primary hydrate has a smaller hydration number and a smaller heat capacity than the secondary hydrate, and wherein the secondary hydrate has a larger hydration number and a larger heat capacity than the primary hydrate.

A method for producing a hydrate thermal storage medium comprising the steps of:

• (a) preparing an aqueous solution containing a guest compound;
• and
• (b) cooling the aqueous solution to generate at least one hydrate selected from the group consisting of a primary hydrate and a secondary hydrate, wherein the primary hydrate has a smaller hydration number and a smaller heat capacity than the secondary hydrate, and wherein the secondary hydrate has a larger hydration number and a larger heat capacity than the primary hydrate.

A hydrate thermal storage medium comprising:

• an aqueous solution contained in a hermetically sealed container to generate at least one hydrate selected from the group consisting of a primary hydrate and a secondary hydrate, wherein the primary hydrate has a smaller hydration number and a smaller heat capacity than the secondary hydrate, and wherein the secondary hydrate has a larger hydration number and a larger heat capacity than the primary hydrate.

A hydrate cold thermal storage transporting medium comprising:

• a primary hydrate and a secondary hydrate, wherein the heat capacity than the secondary hydrate, and wherein the secondary hydrate has a larger hydration number and a larger heat capacity than the primary hydrate.