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The maximal cooling power of magnetic and thermoelectric refrigerators with La(FeCoSi)13 alloys

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4 Author(s)
Skokov, K.P. ; Institut für Materialwissenschaft, TU Darmstadt, 64287 Darmstadt, Germany ; Karpenkov, A.Yu. ; Karpenkov, D.Yu. ; Gutfleisch, O.

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Using our data on magnetic entropy change ΔSm, adiabatic temperature change ΔTad and heat capacity CH for La(FeCoSi)13 alloys, the upper limit of heat Qc transferred per cycle, and the lowest limit of consumed work Wc were established for magnetic refrigerators operating in Δμ0H=1.9 T. In order to estimate the cooling power, attributable to thermoelectric refrigerators with La(FeCoSi)13, thermal conductivity λ, resistivity ρ, and Seebeck coefficient α were measured and the maximal cooling power QL, the input power Pi, and coefficient of performance have been calculated.

Published in:

Journal of Applied Physics  (Volume:113 ,  Issue: 17 )