Thermoelectric conversion unit

A thermoelectric conversion unit for generating electricity based on a temperature difference between a first fluid and a second fluid at a higher temperature than the first fluid, the thermoelectric conversion unit comprising:

• first fluid flow path sections for flow of the first fluid therethrough, the first fluid flow path sections facing each other;
• a second fluid flow path section for flow of the second fluid therethrough, the second fluid flow path section being between the first fluid flow path sections;
• a first thermoelectric module and a second thermoelectric module each configured to convert thermal energy given by the temperature difference between the first fluid and the second fluid to electrical energy, the first thermoelectric module being between the second fluid flow path section and one of the first fluid flow path sections, and the second thermoelectric module being between the second fluid flow path section and an other of the first fluid flow path sections;
• and
• heat transfer plates in the second fluid flow path section, the heat transfer plates facing each other along a direction from the first thermoelectric module toward the second thermoelectric module,
• wherein at least one of the heat transfer plates includes:
• an opening;
• and
• a baffle projecting from a peripheral edge of the opening and being configured to baffle the second fluid passing through the opening to flow in a direction toward the first thermoelectric module or the second thermoelectric module, and
• wherein the heat transfer plates include flat heat transfer plates and corrugated heat transfer plates that are alternately stacked.