Optimal design of high power thermal drive thermoacoustic refrigeration system
A numerical simulation of a two-stage loop heat-driven thermoacoustic refrigeration system was conducted to enhance power density of thermoacoustic heat engines using DeltaEC soft-ware while considering total thermal efficiency.The influence of the hydraulic radius and length of the regenerator on the total thermal efficiency of the system,the engine thermoacoustic conversion efficiency and power density,the refrigeration coefficient and power density of the refrigerator was analyzed.The computational results reveal specific intervals conducive to high power density:a hydraulic radius ranging from 38 μm to 76 μm and a regenerator length between 10 mm and 32 mm.Furthermore,the optimal phase intervals for achieving high power density were identified as-14.74--5.63° for the engine and 11.132-20.457° for the refrigerator.
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