Jfe Engineering Corporation

Nkk Corporation

Nippon Kokan Kabushiki Kaisha

Shingo Takao

Hidemasa Ogoshi

Keiji Tomura

Shigenori Matsumoto

Shinichiro Fukushima

Takao Kitagawa

Rokuro Misawa

Yasuchiyo Sasaki

Takeo Ishiwatari

Naoyuki Furumoto

An apparatus for production of a clathrate hydrate with enhanced latent heat storing capability includes a gas supplier for supplying a gas to an aqueous solution containing a quaternary ammonium compound, and a cooler for cooling the aqueous solution, the apparatus producing the clathrate hydrate with enhanced latent heat storing capability including both the quaternary ammonium compound and the gas as guests by supplying the gas to the aqueous solution with the gas supplier in the stage of cooling with the cooler.

Clathrate hydrate with latent heat storing capability, process for producing the same, and apparatus therefor, latent heat storing medium, and method of increasing amount of latent heat of clathrate hydrate and processing apparatus for increasing amount of latent heat of clathrate hydrate

An aqueous solution containing a quaternary ammonium salt as a guest compound of a clathrate hydrate, having a property of producing the clathrate hydrate when cooled, and further containing a phosphate of an alkali metal added thereto. A clathrate hydrate produced by cooling an aqueous solution containing a quaternary ammonium salt and a phosphate of an alkali metal, wherein the quaternary ammonium salt is the guest compound.

Clathrate hydrate containing quaternary ammonium salt as guest compound

An apparatus produces hydrate slurry, which is a mixture of aqueous solution and hydrate, by cooling aqueous solution containing a guest compound, which generates the hydrate at temperature higher than 0&#xb0; C., by using a cooling medium. The apparatus includes a first heat exchanger for supercooling the aqueous solution while holding the aqueous solution in a liquid state and in a second heat exchanger, which is provided on the downstream side of the first heat exchanger for cooling hydrate slurry.

Apparatus for producing hydrate slurry

A thermal storage apparatus for using a hydrate thermal storage medium including: (a) a storage tank for storing a cooling medium liquid; (b) a refrigerating machine, connected with the storage tank via a pipe for cooling the cooling medium liquid, the cooling medium liquid circulating between the storage tank and the refrigerating machine; and (c) a thermal storage body immersed in the cooling medium liquid, wherein the thermal storage medium comprises a hermetically sealed container containing an aqueous solution which generates 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 small 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.

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

A method and apparatus for making a hydrate slurry, which involves the preparation of an aqueous solution of a guest compound for forming a clathrate hydrate, cooling the aqueous solution, and contacting the aqueous solution with nuclear particles. A thermal storage method, a thermal storage apparatus, and a thermal storage medium using an aqueous solution of a clathrate hydrate, in a concentration which provides a congruent melting point or lower. A refrigerating apparatus and an air conditioner using the thermal storage apparatus and the thermal storage medium.

Air conditioning and thermal storage systems using clathrate hydrate slurry

A method for transporting cold latent-heat which comprises contacting a source of cold latent-heat with a liquid-liquid clathrate capable of crystallization when an onium salt having a C,H,group and an iso-C,H,group is included as a guest into basket-like inclusion clathrate lattices including water molecules.

Method for transporting cold latent heat and system therefor

Disclosed is a technique whereby when multi-component liquefied gases such as liquefied natural gases (LNG), liquefied petroleum gases (LPG) or the like which are different in composition, density or the like are stored in the same storage tank, any stratification of the liquefied gases within the storage tank is prevented. The introduction of the liquefied gas into the storage tank is accomplished in such a manner that the introduced gas enters the storage tank in the form of a jet of liquefied gas which is shoot out from near the tank bottom obliquely upwardly with an ascending vertical angle in a predetermined range and reaches or comes near to the free surface within the storage tank, and in this way the desired mixing of the introduced liquefied gas with the liquefied gas previously existing in the storage tank is effected as soon as the introduced liquefied gas enters the tank.

Growing community of inventors

Yokohama, Japan

Shingo Takao