Fujitsu Corporation

Seiji Hibino

Hiroaki Yoshida

Fumio Takei

Hiroki Uchida

Susumu Ogata

Nawalage Florence Cooray

Masami Tsutsumi

Kensuke Yoshida

Takeshi Shioga

Takahiro Kimura

Jun Taniguchi

Yoichi Takasu

Makoto Yoshino

Youichi Takasu

A loop heat pipe includes an evaporator to cause a liquid-phase working fluid to be vaporized by heat from a heat source; a condenser to condense the vaporized working fluid; a circulation path including a liquid line and a vapor line to connect the condenser and the evaporator in a loop; a tank provided on the liquid line and configured to accommodate the liquid-phase working fluid; a connecting line to connect the tank and the evaporator to supply the liquid-phase working fluid to the evaporator; and a bypass line positioned over the connecting line in a direction of gravity and connecting the evaporator and the tank, the bypass line being configured to discharge a vapor bubble produced in the evaporator during operation of the loop heat pipe to the tank.

Loop heat pipe and electronic equipment using the same

There is provided a loop heat pipe which includes an evaporator that internally includes at least one wick built, a condenser, a liquid pipe and a vapor pipe that connect the evaporator and the condenser to each other, and a heat dispersion cavity that is formed inside the evaporator, and disperses a vapor, wherein the wick includes, a first wick that is porous, a second wick that is porous, the second wick being inserted into the first wick from the liquid pipe side and including a pore size larger than the first wick, and a vapor channel that is defined between the first wick and the second wick. The vapor channel is connected at an end on the liquid pipe side to the heat dispersion cavity.

Loop heat pipe, and electronic apparatus including loop heat pipe

A loop heat pipe includes: an evaporator to convert liquid phase working fluid into vapor phase working fluid; a condenser to convert vapor phase working fluid into liquid phase working fluid; a first vapor line and a first liquid line to allow the evaporator to communicate with the condenser and form a circular main loop; and a second vapor line and a second liquid line to allow the evaporator to communicate with the condenser and form a circular auxiliary loop; wherein the evaporator includes a reservoir that temporarily stores the liquid phase working fluid, a first vapor collector that communicates with the first vapor line, a second vapor collector that communicates with the second vapor line, first wick disposed between the reservoir and the first vapor collector, and second wick disposed between the reservoir and the second vapor collector.

Loop heat pipe and electronic apparatus

In the present invention, a material having a structure represented by formula (1) or (2) (wherein W equals N or C) is used as a solid electrolyte for a fuel cell. An electrolyte membrane having a small fuel crossover and a fuel cell having excellent ion conductivity and service capacity are obtained. 

Redox fuel cell using methanol

A direct methanol type fuel cell is provided with a generated gas ejection part having a bundle made up of hollow fiber membranes extending between a fuel electrode and a liquid fuel vaporizing layer that vaporizes a methanol aqueous solution and supplies methanol gas to the fuel electrode. The hollow fiber membranes selectively pass carbon dioxide within a mixture gas that includes methanol, the carbon dioxide generated at the fuel electrode and the like, and eject the carbon dioxide via end portions of the hollow fiber membranes that open at a side surface of the fuel cell via hollow portions. The fuel cell has a high carbon dioxide ejection capability, and suppresses leak of methanol gas. A pressure applying part may be provided to apply a back pressure to the methanol aqueous solution within a fuel storage part, so as to further improve the carbon dioxide ejection capability.

Fuel cell

A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.

Growing community of inventors

Isehara, Japan

Seiji Hibino