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On the basis of traditional single stage pulse tube cooler, a cascade pulse tube cooler is designed and fabricated which includes a primary and a secondary stage pulse tube cooler connected by a transmission tube which recovers the acoustic power from the primary stage. In this paper, the transmission tube and the secondary cooler are optimally designed. Cooling power of 207.9W is obtained in the preliminary experiment, which is higher than the maximum cooling capacity 189.6W of the single stage cooler, which demonstrates our concept

Study on a Cascade Pulse Tube Cooler with Work Recovery