The thermoelectric cooler, or Peltier Cooler, is a solid-state heat pump that uses the Peltier effect to move heat. The modern commercial TEC consists of a number of p- and n- type semiconductor couples connected electrically in series and thermally in parallel. These couples are sandwiched between two thermally conductive and electrically insulated substrates. The heat's pumping direction can be changed by altering the polarity of the charging DC current..



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