Daihatsu Motor Company, Ltd.

Nagaoka University of Technology

Ngk Insulators, Inc.

National University Corporation Nagaoka of Technology

National University Coororation Nagaoka University of Technology

National University Corporation Nagaoka University of Technology

Koichi Niihara

Tadachika Nakayama

Hirohisa Tanaka

Yoonho Kim

Masatoshi Takeda

Noboru Yamada

Juyoung Kim

Satoru Yamanaka

Takeshi Serizawa

Yuji Katsuda

Yoshimasa Kobayashi

Akira Nakajima

Hiroaki Sakai

Takashi Ogawa

Hiroya Nakata

Satoshi Ishizawa

Kyohei Ogawa

Masashi Shida

A power generation system includes: a heat source having a temperature being changed over time; a flow passage through which a heat medium heated by the heat source passes; a power generation device including a power generation element and a first electrode, the power generation element being electrically polarized by temperature change thereof depending on temperature change of the heat medium, the first electrode extracting electric power from the power generation element; a temperature detection device being disposed on an upstream side relative to the power generation device in the flow passage and detecting the temperature of the heat medium; a voltage application device that applies voltage to the power generation element; and a control device that activates the voltage application device when the temperature increase of the heat medium has been detected and deactivates the voltage application unit when the temperature decrease of the heat medium has been detected.

Power generation system

A power-generating system includes a heat source which is able to produce temporal temperature variation; a first device which is able to produce temporal temperature variation based on the temperature change of the heat source and in which polarization occurs; a second device for taking out a net generating power from the first device; a temperature sensor that detects the temperature of the first device; a voltage application device that applies a voltage to the first device; and a control unit for activating the voltage application device on detecting an increase in temperature of the first device and for stopping the voltage application device on detecting a decrease in temperature of the first device by the temperature sensor.

Pyroelectric power-generating system

A power-generating system includes a heat source which is able to produce temporal temperature variation, a first device in which polarization occurs based on the temperature change of the heat source, and a second device for taking out a net generating power from the first device, wherein 80% or higher of the total surface area of the first device is heated and/or cooled with the heat source.

Power generating system

A power-generating system includes a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to a temperature change of the heat source; and a second device that takes out an electric power from the first device.

Power-generating system

There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF) to yttrium oxide (YO). Accordingly, the yield, handling and reliability can be improved when this strengthened yttrium oxide-containing material is applied to and used for components of semiconductor manufacturing equipment.

Yttrium oxide-containing material, component of semiconductor manufacturing equipment, and method of producing yttrium oxide-containing material

Growing community of inventors

Niigata, Japan

Koichi Niihara