Samsung Heavy Ind. Co., Ltd

Korea Institute of Energy Research

Dong-Hyun Lee

Hyun-Sang Park

Tae-Goo Lee

Se-Myun Oh

Byung-sik Park

Kwang-Kun Park

Jae-Kwon Jung

Kwang-Jun Paik

Tae-Sik Lee

Hee-Tak Kim

Moo-Seok Lee

Jin-Suk Lee

Ji Nam Kim

Hyuk Kwun

Ji-Nam Kim

Hyoung-Gil Park

Jae-Ouk Roh

Tae-Sam Choi

Sung-Wook Chung

Chi-Su Song

Jeung-Hoon Lee

Jong-Soo Seo

Nam-Yong Heo

Seung-Myun Hwangbo

Yong-hoon Im

Si-Woo Lee

Hyung-Kee Lee

Young-Min Yang

Chun Dong Park

Seongmin Yuk

Jin-Ho Kim

Jun-Young Kim

A radical scavenger, a manufacturing method therefor, a membrane-electrode assembly including the radical scavenger, and a fuel cell including the membrane-electrode assembly are disclosed. The membrane-electrode assembly contains an ion exchange membrane; catalyst electrodes disposed on both surfaces of the ion exchange membrane, respectively; and a radical scavenger disposed at any one position selected from the group consisting of in the catalyst electrodes, in the ion exchange membrane, between the ion exchange membrane and the catalyst electrodes, and a combination thereof.

Radical scavenger, manufacturing method therefor, membrane-electrode assembly comprising same, and fuel cell comprising same

Provided is a ship propelling apparatus including a rotation shaft on which a rear propeller is fixed; a front propeller rotatably supported on the rotation shaft in front of the rear propeller; and a counter-rotating device through which the rotation shaft passes, which includes a gear box including therein a plurality of gears configured to reverse rotation of the rotation shaft and transfer the reversed rotation to the front propeller, and which is installed in an installation space formed at the rear of a ship. The rotation shaft includes a measurement hole formed to pass through a center of the rotation shaft for centering of the counter-rotating device installed in the installation space; and an individual lubricant path separated from the measurement hole.

Propulsion apparatus for ship

Disclosed is a ground heat exchange system including a heat exchange pipe including a borehole surface and an inner pipe to be inserted into the borehole surface, and installed to penetrate the ground, a circulation pump configured to inject a fluid between the borehole surface and the inner pipe and discharge a heated fluid from the inner pipe, a heat exchanger configured to exchange heat using the fluid discharged from the inner pipe, and at least one wing portion disposed between the borehole surface and the inner pipe and configured to reduce heat transfer between a fluid flowing between the borehole surface and the inner pipe and a fluid flowing in the inner pipe.

Coaxial ground heat exchanger and ground heat exchange system including the same

Provided are a propulsion device for a ship and a ship including the same. The propulsion device for the ship includes: a rear propeller fixed to a rotation shaft; a front propeller that is rotatably supported on the rotation shaft in the front of the rear propeller; at least one bearing interposed in at least one of spaces between a hub of the front propeller and the rotation shaft and between the rotation shaft and a ship body; and an inverse rotation unit that inverts rotation of the rotation shaft, transfers the inverted rotation to the front propeller and includes a gearbox that is accommodated in an installation space formed in a tail of the ship body in a state in which a plurality of gears for implementing inversion of the front propeller are embedded, wherein at least one measurement unit for measuring operating states of the at least one bearing is mounted to the rotation shaft.

Propulsion apparatus for ship and ship having the same

Disclosed are a propulsion system for a ship, a method of assembling the same, and a method of disassembling the same. The propulsion system for the ship includes: a rear propeller fixed to a rotary shaft; a front propeller that is rotatably supported on the rotary shaft in front of the rear propeller; a contra-rotating device that is mounted in an installation space at a rear end of a hull so as to reverse the rotation of the rotary shaft and transmit the reversed rotation to the front propeller; a propeller connecting member that connects the contra-rotating device and the front propeller to transmit a rotational force; and a thrust supporting device that is provided between the contra-rotating device and the propeller connection member to support thrust of the front propeller.

Propeller for ship, and assembling method and disassembling method therefor

Disclosed are a propulsion device for a ship and a ship having the same. The propulsion device may include a rotational shaft, a rear propeller fixed to the rotational shaft, a front propeller rotatably supported by the drive shaft in front of the rear propeller, a counter rotation unit disposed in an installation space of a stern of a ship body and including a plurality of gears configured to reverse rotation of the rotational shaft and transmit the reversed rotation to the front propeller and a gear box configured to receive the plurality of gears, a coupling unit configured to separably connect the rotational shaft with the counter rotation unit and cut off power transmission from the rotational shaft to the counter rotation unit upon disconnection therebetween, and a rotation preventing unit configured to prevent rotation of the front propeller when the coupling unit is separated.

Propulsion device for ship and ship comprising the same

There is disclosed a top foil for a foil thrust bearing including a main plate, a first hook comprising a first vertical portion bend upwardly from an end of the main plate and a first horizontal portion bend forwardly from an end of the first vertical portion, and a second hook comprising a second vertical portion bend downwardly from a rear end of the main plate and a second horizontal portion bend backwardly from an end of the second vertical portion.

Top foil for foil thrust bearing and foil thrust bearing including the same

Growing community of inventors

Daejeon, South Korea

Dong-Hyun Lee