An efficient looped multiple-stage thermoacoustically-driven cryocooler for liquefaction and recondensation of natural gas
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An efficient three-stage thermoacoustically-driven cryocooler system is developed.

Exergy efficiency of 7.8% and 880 W cooling capacity at 110 K was achieved.

Regenerator–resonator flow-area ratio and cooling load impedance are key parameters.

Operation is explained by analysis of acoustic impedance and exergy loss.

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