thermoelectric junction การใช้

• Thermoelectric junctions are typically around 10 % as efficient as the ideal Carnot cycle refrigerator, compared with 40 % achieved by conventional compression cycle systems.
• It had been long known that continuous electric currents flowed through the solid and liquid portions of the Earth, and the collection of current from an electrically conductive medium in the absence of electrochemical changes ( and in the absence of a thermoelectric junction ) was established by Lord Kelvin.
• In refrigeration applications, thermoelectric junctions have about 1 / 4th the efficiency compared to conventional means ( they offer around 10 15 % efficiency of the ideal Carnot cycle refrigerator, compared with 40 60 % achieved by conventional compression cycle systems ( reverse Rankine systems using compression / expansion ) . ) Due to this lower efficiency, thermoelectric cooling is generally only used in environments where the solid state nature ( no moving parts, low maintenance, compact size, and orientation insensitivity ) outweighs pure efficiency.