18.6 K single-stage high frequency multi-bypass coaxial pulse tube cryocooler |
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| Affiliation: | 1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, CAS, Beijing 100190, People’s Republic of China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;1. Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China;2. Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China;3. Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou 310024, China;1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. Lihan Cryogenics Co., Ltd, Shenzhen 518055, China;3. Graduate University of Chinese Academy of Sciences, Beijing 100190, China;1. Institute of Refrigeration Technology, University of Shanghai for Science and Technology, No. 516 Jun Gong Road, Shanghai 200093, PR China;2. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, No. 500 Yu Tian Road, Shanghai 200083, PR China;1. Corporate R&D Headquarters, Fuji Electric Co., Ltd., 1, Fuji-machi, Hino, Tokyo 191-8502, Japan;2. Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan;1. Energy Research Institute @ NTU, Nanyang Technological University, 637141, Singapore;2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore;1. Univ. Grenoble Alpes, INAC-SBT, F-38000 Grenoble, France;2. CEA, INAC-SBT, F-38000 Grenoble, France;3. CNES, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, Toulouse, France |
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| Abstract: | A single-stage high frequency multi-bypass coaxial pulse tube cryocooler (PTC) has been developed for physical experiments. The performance characteristics are presented. At present, the cooler has reached the lowest temperature of 18.6 K with an electric input power of 268 W, which is the reported lowest temperature for single-stage high frequency PTC. The cooler typically provides 0.2 W at 20.6 K and 0.5 W at 24.1 K with the input power of 260 W at 300 K ambient temperature. The cooperation phase adjustment method of multi-bypass and double-inlet shows its advantages in experiments, they might be the best way to get temperature below 20 K for single-stage high frequency PTC. The temperature stability of the developed PTC is also observed. |
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