Investigation on a three-cold-finger pulse tube cryocooler |
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| Affiliation: | 1. Key Laboratory of Space Energy Conversion Technology, Technical Institute of Physics and Chemistry, CAS, China;2. University of Chinese Academy of Sciences, CAS, China;1. Univ. Grenoble Alpes, CEA, INAC, SBT, F-38000 Grenoble, France;2. ISAS-JAXA, 3-1-1Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan;3. R&D-JAXA, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan;4. High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan;5. CNES Toulouse, F-31055 Cedex 4, France;6. ESA-ESTEC, Noordwijk, The Netherlands;1. Institute of High Energy Physics, Chinese Academy of Sciences, Box 918, 100049 Beijing, China;2. Tsinghua University, 100086 Beijing, China;3. Sichuan University, 610207 Chengdu, China;1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, PR China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, PR China;1. Key Laboratory of Thermo-Fluid Science and Engineering of MOE School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, shaanxi 710049, P R China;2. Lanzhou Key Institute of Physics, PO 94#, Lanzhou, Gansu 730000, P R China |
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| Abstract: | This paper introduces a new type of pulse tube cryocooler, three-cold-finger pulse tube cryocooler (TCFPTC), which consists of one linear compressor and three cold fingers, i.e., CFA, CFB and CFC. Those three cold fingers are driven by the linear compressor simultaneously. This paper investigates two aspects. First, it studies the mass flow distribution among the three cold fingers by varying the input electrical power. The cooling powers of the three cold fingers at constant cooling temperatures and the cooling temperatures of the three cold fingers at constant cooling powers with various input electrical powers are investigated. Secondly, the interaction among the three cold fingers is investigated by varying the heating power of any one cold finger. Generally, if the heating power applied on one cold finger increases, with its cold head temperature rising up, the cold head temperatures of the others will decrease. But, when the cooling power of CFC has been 4 W, the cold head temperature of whichever cold finger increases, the cold head temperature of CFA or CFB will seldom change if its heating power keeps constant. |
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| Keywords: | TCFPTC Cooling power Cooling temperature Heating power |
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