Korea Institute of Science and Technology

Yoon-Pyo Lee

Dae-Young Lee

Seo-Young Kim

Young-Soo Chang

Heon-Ju Lee

Hoe-Woong Kim

An evaporative humidifier for a polymer electrolyte membrane fuel cell system including a fuel cell stack, comprising: a condensation channel to which exhaust gas from the fuel cell stack is introduced; an evaporation channel to which supply gas for the fuel cell stack is introduced; a partition wall for separating the condensation channel and the evaporation channel from each other; and a water distribution unit for supplying water into the evaporation channel, wherein the water is condensed in the condensation channel by heat exchange between the exhaust gas and the supply gas.

Evaporative humidifier for fuel cell system

Provided are an electric power generating apparatus for a movement type equipment and a self-generation system having the same. The electric power generating apparatus for a movement type equipment includes: a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass; and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam. The self-generation system includes: a movement type equipment; and an electric power generating apparatus for a movement type equipment including a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass, and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam. According to the electric power generating apparatus for the movement type equipment and the self-generation system having the same, since external movement is converted into vibration perpendicular to an electric beam using elasticity of the electric beam and load applied to an end of the beam, continuous vibration is induced to the piezoelectric beam. Also, high energy conversion efficiency can be obtained by using resonance.

Growing community of inventors

Seoul, South Korea

Yoon-Pyo Lee