Kabushiki Kaisha Toshiba

Nippon Oil Company

Nippon Petrochemicals Company, Limited

Nippon Hodo Co., Ltd.

Yutaka Watanabe

Katsuya Yamashita

Tsuyoshi Noma

Takayuki Hachimonji

Sanae Sekita

Katuaki Ishikawa

Sumio Ikeda

Hisanobu Niwata

Yoshiteru Kato

Kazuo Aoyama

A latent heat accumulation system having a transfer mechanism comprises a production tank in which water is put in direct contact with an antifreezing liquid which does not combine with the water, has a specific gravity greater than that of the water and is cooled to a preset temperature level, thus producing ice particles, a recovery section, formed at a lower part of the production tank, for recovering the antifreezing liquid descending within the production tank, an upward pipe, connected to the production tank, for guiding upward a two-phase stream of the water and ice particles within the production tank, a transfer pipe, connected to the upward pipe, for transferring the two-phase stream to a specified place, a reservoir tank for storing the two-phase stream transferred via the transfer pipe, a water circulation system for draining the water from the reservoir tank and introducing the drained water into the production tank, and an antifreezing fluid circulation system for cooling the antifreezing fluid recovered by the recovery section and feeding the cooled antifreezing fluid into the production tank for bringing the antifreezing fluid into direct contact with the water.

Latent heat accumulation system

A latent heat accumulation system uses latent heat for air-conditioning. The latent heat accumulation system includes a tank, supplying section, injecting section, drawing section and collecting section. The tank has a liquid storing section for storing Fluorinate (trade name) in the lower portion thereof, storing water which is cooled by ice via a boundary surface with Fluorinate in the middle portion thereof and storing the ice together with the water in the upper portion thereof. The supplying section supplies the water into the liquid storing section. The injecting section injects Fluorinate cooled to a preset temperature into the water stored in the liquid storing section. The drawing section draws out the water which is stored in the liquid storing section and cooled by the ice to the exterior of the tank as an air-conditioning heat accumulation medium. The collecting section collects a mixed fluid of the water and Fluorinate from the lower portion of the liquid storing section.

A cushion or trackbed material for use in a riding-ground is obtained by coating sand with a carboxyl-containing olefin polymer and an oxygen-containing wax.

Cushion or trackbed material for use in riding-ground

A compact and easy-to-construct cylindrical counter-flow heat exchanger is provided for cryogenic refrigeration systems. It has an annular body, a helical pipe wound around and in contact with the annular body, and a sleeve which envelopes the helical pipe. A helical flow passage is formed around the annular body in contact with the helical pipe. A high-pressure fluid is introduced into a helical pipe, while a low-pressure fluid flows through the helical flow passage. Heat is exchanged between the two fluids through the helical pipe wall which is made of high heat-conductivity material such as copper.

Cylindrical counter-flow heat exchanger

Growing community of inventors

Yokohama, Japan

Yutaka Watanabe