17 May 2016 Improved thermoelectric cooling based on the Thomson effect
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Abstract
Traditional thermoelectric cooling relies on the Peltier effect which produces a temperature drop limited by the figure of merit, zT. This cooling limit is not required from classical thermodynamics but can be traced to problems of thermoelectric compatibility. Alternatively, if a thermoelectric cooler can be designed to achieve full thermoelectric compatibility, lower temperature can be achieved even if the zT is low. In such a device the Thomson effect plays an important role. We present the theoretical concept of a “Thomson cooler,” for cryogenic cooling which is designed to maintain thermoelectric compatibility and we derive the requirements for the Seebeck coefficient.
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G. Jeffrey Snyder, G. Jeffrey Snyder, Raghav Khanna, Raghav Khanna, Eric S. Toberer, Eric S. Toberer, Nicholas A. Heinz, Nicholas A. Heinz, Wolfgang Seifert, Wolfgang Seifert, "Improved thermoelectric cooling based on the Thomson effect", Proc. SPIE 9821, Tri-Technology Device Refrigeration (TTDR), 98210J (17 May 2016); doi: 10.1117/12.2228760; https://doi.org/10.1117/12.2228760
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