Heat exchanger including thermoelectric module

摘要

A heat exchanger includes a thermoelectric module (11). A first fluid passage (13) is arranged at a heat dissipation side of the thermoelectric module (11) and a second fluid passage (15) is arranged at a heat absorption side of the thermoelectric module (11). The thermoelectric module (11) includes P type and N type thermoelectric semiconductor elements (16, 17). An electrical insulator (21) couples the P type and N type thermoelectric semiconductor elements (16, 17). Heat dissipation side electrodes (18) are exposed in the first fluid passage (13) and heat absorption side electrodes (19) are exposed in the second fluid passage (14). At least the heat dissipation side of the thermoelectric module (11) includes valleys and ridges with the heat dissipation side electrode (18) being free from projections.