Speaker
Mr
Qinyu Zhao
Description
By using a well-designed transmission tube to recover the dissipated acoustic power at the hot end of the former PTC, the efficiency of the multi-stage cascade PTC is capable to approach Carnot efficiency. Based on this theory, a third pulse tube cryocooler (PTC) was connected in series with the existing two-stage cascade PTC. Experiments showed that the cooling power of the three-stage cascade PTC was 253.6 W @233 K, which was improved by 39.9% compared with that of the single-stage PTC. This moved the PTC efficiency forward one more step to approach Carnot efficiency.
Authors
Mr
Qinyu Zhao
Mr
Longyi Wang
Mr
Zeyuan Jin
Mr
Zhihua Gan