Estimation of the Thermodynamic Efficiency of a Solid-State Cooler Based on the Multicaloric Effect

Resumo

The thermodynamic efficiency of using the multicaloric effect (μCE) in solid-state cooler systems has been studied in comparison to single-component caloric effects. This approach is illustrated by example of the Brayton cycle for μCE and magnetocaloric effect (MCE). Based on the results of experiments with Fe₄₈Rh₅₂–PbZr_0.53Ti_0.47O₃ two-layer ferroic composite, the temperature dependence of the relative efficiency is determined and the temperature range is estimated in which the μCE is advantageous to MCE. The proposed theory of μCE is compared to experimental data.