THERMOELECTRIC CONVERSION UNIT AND METHOD OF USING SAME

A thermoelectric conversion unit including a pair of first fluid flow passage parts facing each other through which a first fluid flows; a second fluid flow passage part disposed between the first fluid flow passage parts and through which a second fluid having a higher temperature than the first fluid flows; a pair of thermoelectric modules each disposed between a corresponding one of the first fluid flow passage parts and the second fluid flow passage part and generating electromotive force based on a temperature difference between the first fluid and second fluid; and a pair of magnetic body parts disposed inside of or on a surface of the first fluid flow passage parts, in which each of the magnetic body parts has a magnetic body, and the magnetic bodies are disposed so that different magnetic poles face each other, and generate magnetic force pulling the magnetic bodies toward each other.