Speaker
Description
Large-scale free-piston Stirling cryocoolers, capable of delivering several hundred watts of cooling power at 80 K, have significant potential applications in boil-off gas re-liquefaction and precooling processes. Recently, we proposed a novel parallel regenerator layout aimed at suppressing local acoustic streaming, which could enable further scaling of the cryocooler while maintaining high thermal efficiency. Numerical modeling was performed, and an experimental prototype was developed based on this design. Experimental results demonstrated reasonable agreement with the numerical predictions in terms of cooling power. However, discrepancies in thermal efficiency were observed, likely due to inconsistencies among the individual regenerators.
