Heat Leakage Analysis on Peltier Current Leads of Different Structures

In order to expand applications of Peltier current leads (PCLs), serial-connection, variable cross-section, and copper-aluminum composite designs of conduction-cooled PCLs were introduced in this paper. The simulation models for each design were established. The results showed that serial connection of thermoelectric semiconductors with the same type is unavailable in conduction-cooled PCLs. For specified lengths of PCLs in some special occasions, the variable cross-section design is quite available. However, its decrease of heat leakages is limited. And the copper-aluminum composite structure can also reduce heat leakages.