Fujikura Limited

Doryokuro Kakunenryo Kaihatsu Jigyodan

Ryuichi Okiai

Masataka Mochizuki

Masuji Sakaya

Kouichi Mashiko

Nobuyuki Sadakata

Osamu Kohno

Yoshimitsu Ikeno

Masakazu Hasegawa

Mikio Nakagawa

Hiroshi Yamanouchi

Mitsuru Kamei

Shin'ya Aoki

Masayuki Tan

Motoharu Yatsuhashi

Syotaro Yoshida

Takao Sakai

Shinichi Sugihara

A wick layer is attached and fixed to one surface of a metal tape without forming a gap with the metal surface, and thereafter, the tape is rolled to form a pipe, such that the surface having the wick layer serves as an inner surface of the pipe. Trapezoid-shaped projecting surface portions are formed on at least an outer surface portion of the pipe, and project in a predetermined direction.

Heat pipe and method of manufacturing the same

A wick layer is attached and fixed to one surface of a metal tape without forming a gap with the metal surface, and thereafter, the tape is rolled so that the surface having the wick layer serves as an inner surface, thus forming a pipe shape, then the pipe wall is corrugated. According to the above process, the wick layer is completely and uniformly attached to the inner surface of the heat pipe.

Method of manufacturing a heat pipe

A method of producing a superconducting cable or a coil including an A-B-C-D system superconductor where the A includes an element of group IIIa of the Periodic Table, the B an element of group IIa of the Periodic Table, C copper, D oxygen. A plurality of filaments are selected from a copper alloy filament including: a copper alloy filament including the A element; copper alloy filament including the B element; a copper alloy filament including both the elements the A and the B; a first metallic filament having particles of a copper oxide, copper halide or copper sulfide dispersed therein; a second metallic filament coated with an oxide layer; a copper filament containing the A element and having particles of a copper oxide, copper halide or copper sulfide dispersed therein; a copper filament containing the B element and having particles of a copper oxide, copper halide or copper sulfide dispersed therein; a third metallic filament containing the A element and coated with an oxide layer; a fourth metallic filament containing the B element and coated with an oxide layer; the first to fourth metallic filaments being substantially free of any component which provides an adverse effect on the production of the superconductor. The selected filaments are arranged to form element filaments bundle so that the superconductor is produced in a subsequent heat treatment. The bundle is drawn and then heated under an oxidizing atmosphere for producing the superconductor.

Method of producing oxide superconducting cables and coils using copper

Herein disclosed is a dual-tube heat pipe type heat exchanger comprising a heat pipe confined with a working fluid for transferring a heat as a latent heat by repeating evaporations and condensations. The heat pipe includes an outer tube which is disposed within a hot fluid such that its axis is generally horizontal. Further included is an inner tube which is inserted in the outer tube and radially offset upward to substantially contact with the top portion of the inner face of the outer tube and to confine a space between the inner circumference of the outer tube and the outer circumference of the inner tube, thus forming the heat pipe.

Dual-tube heat pipe type heat exchanger

Growing community of inventors

Yotsukaido, Japan

Ryuichi Okiai