Nisshin Steel Co., Ltd.

Clean Planet Inc.

Hitachi, Ltd.

Senju Metal Industry Co., Ltd.

Takehiko Ito

Hideki Yoshino

Yasuhiro Iwamura

Jirota Kasagi

Tetsuharu Ibaraki

Yusuke Hirose

Masanao Hattori

Shotaro Hirano

Masahide Ise

Toshihiko Taguchi

Yoshitaka Nakagawa

Akira Minato

Heihatiro Midorikawa

Masahiko Itoh

Kiichiro Katayama

Koichi Watanabe

Taisuke Irie

Mituru Kubo

Fumihiro Ida

Hideaki Ishida

A heat utilization system according to the invention includes: a sealed container into which a hydrogen-based gas is supplied; a heat generating structure that is accommodated in the sealed container and includes a heat generating element that is configured to generate heat by occluding and discharging hydrogen contained in the hydrogen-based gas; and a heat utilization device that utilizes, as a heat source, a heat medium heated by the heat of the heat generating element. The heat generating element includes a base made of a hydrogen storage metal, a hydrogen storage alloy, or a proton conductor, and a multilayer film provided on the base. The multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of less than 1000 nm and a second layer made of a hydrogen storage metal or a hydrogen storage alloy, which is different from that of the first layer, or ceramics and having a thickness of less than 1000 nm.

Heat utilization system and heat generating device

A heat generating method includes: heating, with a heater, a heat generating element and causing a first heat generating reaction in which the heat generating element generates heat with a first heat generation amount and triggering a second heat generating reaction in which the heat generating element generates heat with a second heat generation amount larger than the first heat generation amount, by imparting a perturbation to an input power to be applied to the heater in a state where the first heat generating reaction is occurring. The heat generating element includes a base made of a hydrogen storage metal, a hydrogen storage alloy, or a proton conductor, and a multilayer film provided on a surface of the base, with a stacked configuration of a first layer and a second layer made of different materials and both having a thickness of less than 1,000 nm.

Heat generating method

A heat generating device includes a container, a heat generating element, and a heater. A hydrogen-based gas contributing to heat generation is introduced into the container. The heat generating element is provided inside the container. The heater is configured to heat the heat generating element. The heat generating element includes a base made of a hydrogen storage metal, a hydrogen storage alloy, or a proton conductor, and a multilayer film provided on a surface of the base. The multilayer film having a stacking configuration of: a first layer that is made of a hydrogen storage metal or a hydrogen storage alloy, and a second layer that is made of a hydrogen storage metal, a hydrogen storage alloy, or ceramics different from that of the first layer. The first layer and the second layer have a layer shape with a thickness of less than 1000 nm.

Heat generating device and method for generating heat

Provided are a novel heat utilization system and heat generating device that utilize an inexpensive, clean, and safe heat energy source. A heat utilization systemincludes a heat-generating elementconfigured to generate heat by occluding and discharging hydrogen, a sealed containerhaving a first chamberand a second chamberpartitioned by the heat-generating element, and a temperature adjustment unitconfigured to adjust a temperature of the heat-generating element. The first chamberand the second chamberhave different hydrogen pressures. The heat-generating elementincludes a support elementmade of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer filmsupported by the support element. The multilayer filmhas a first layermade of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of less than 1000 nm and a second layermade of a hydrogen a hydrogen storage metal different from that of the first layer, a hydrogen storage alloy different from that of the first layer, or ceramics and having a thickness of less than 1000 nm.

Heat utilization system, and heat generating device

A heat generating system () of the present invention controls an excess heat output from heat-generating element cells () that are generating excess heat as a result of the heat generation reaction among the plurality of heat-generating element cells () by increasing the number of heat generation reaction positions, and therefore even if the other heat-generating element cells () do not generate excess heat due to insufficient heat generation reaction, the heat-generating element cells () in which the heat generation reaction is certainly occurring can compensate for insufficient amount of heat to be recovered, thereby capable of stably obtaining heat using the heat-generating element cells () each of which generates heat using a hydrogen storage metal or a hydrogen storage alloy.

Heat generating system

Zn-Ni-alloy electroplating of steel sheets is carried out using a plating bath containing 10-40 g/l zinc, 15-160 g/l nickel, 0.1-5 g/l cobalt and 0.2-10 g/l titanium and 0.1-5 g/l aluminum or 0.1-5 g/l magnesium existing in the form of salts, the pH of which is 1.5-2.5. The obtained plated product exhibits improved excellent corrosion resistance and corrosion peeling resistance. The product can be subjected to heating to 60.degree.-200.degree. C., preferably in hot water, steam, or atomized water mist. This treatment further increases corrosion resistance.

Product of and process for preparing Zn-Ni-alloy-electroplated steel

A process for the partial hot dipping of a long steel strip is disclosed which comprises forming an oxidation-inhibiting film, oxygen-impermeable and thermally stable in a hot-dipping bath, which film is produced by the chemical reaction of an iron content in the steel strip with an oxidation inhibiting film-forming agent, such as an inorganic phosphoric acid compound, on a predetermined area of the steel strip surface, forming, as required, an intermediate layer comprising an inorganic binder, such as water glass, on the resulting film, forming a carbon-containing, plateing-stopping film as a top coat on the intermediate layer, and hot dipping the steel strip.

Process for partial hot dipping of steel strips

This invention relates to a zinc plated steel plate, at least one side surface of which is substantially free from oxides and coated with an anti-rust film, and a can produced from said zinc plated steel plate having an interlocking seam joint bonded by soldering techniques.

Zinc plated steel plate and can produced from the same

Highly reliable measurement of degree of alloying of galvannealed steel sheets is carried out in order to fully control the continuous hot-dip galvanizing and galvannealing process on the basis of evaluation of a combination of two or more X-ray diffraction characteristics. Exact degree of alloying can be estimated without regard to fluctuations in the particulars of the material, the process conditions and the type of the product obtained.

Method for measuring the degree of alloying of galvannealed steel sheets

A method of soldering stainless steel pipes by using soft solders, which comprises the steps of preparing a pipe joint having a diametral clearance of from 0.05 to 1.00 mm, filling said clearance with paste solder, heating said pipe joint to melt said paste solder, and feeding additional soft solder into said clearance immediately after said paste solder is molten by said heating. Particularly, the paste solder comprises from 20 to 80% by weight of powder solder and from 20 to 80% by weight of a flux composition comprising a mixture of from 5 to 50% by weight of phosphoric acid (H.sub.3 PO.sub.4) and from 95 to 50% by weight of ammonium dihydrogenphosphate (NH.sub.4 H.sub.2 PO.sub.4) dissolved or suspended in a vehicle.

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Tokyo, Japan

Takehiko Ito