Adaptation of a new regenerator structure aiming at the high performance and efficiency for cryocoolers

• Project/Area Number: 15K06693
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Oshima National College of Maritime Technology
• Principal Investigator: Masuyama Shinji 大島商船高等専門学校, その他部局等, 教授 (00287591)
• Co-Investigator(Kenkyū-buntansha): 沼澤 健則 国立研究開発法人物質・材料研究機構, その他部局等, その他研究員 (30354319)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 極低温 / 小型冷凍機 / 蓄冷器

Outline of Final Research Achievements

An equivalent changing method of regenerator configuration was applied to a Gifford-McMahon (GM) cryocooler. The evaluation tests have been carried out at 4 K level. The experimental result proved that the cooling power at 4.2 K was able to improve when the warm-end side of the second stage regenerator of GM cryocooler was made narrow equivalently. The numerical analysis showed that the density of helium gas is much different between the warm- and cold-end side within the regenerator. From this study, the elucidation of regenerator characteristic that can achieve a high performance cryocooler progressed.

Research Products

• [Journal Article] A Double Pipe Regenerator for a 4K Gifford-McMahon Cryocooler (2017)
  • Author(s): S. Masuyama, T. Numazawa
  • Journal Title: Cryocoolers Volume: 19 Pages: 307-312
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Cryogenic Regenerators (2016)
  • Author(s): 増山新二
  • Journal Title: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Volume: 51 Issue: 8 Pages: 391-397
  • DOI: 10.2221/jcsj.51.391
  • NAID: 130005179762
  • ISSN: 0389-2441, 1880-0408
  • Peer Reviewed / Open Access
• [Presentation] Characteristics of a 1.6 W Gifford-McMahon cryocooler with a double pipe regenerator (2017)
  • Author(s): S. Masuyama, T. Numazawa
  • Organizer: Cryogenic Engineering Conference and International Cryogenic Materials Conference
  • Place of Presentation: Monona Terrace Community and Convention Center (Madison)
  • Year and Date: 2017-07-09
  • Int'l Joint Research
• [Presentation] 1.6 W - GM冷凍機の開発 (2017)
  • Author(s): 増山新二，沼澤健則
  • Organizer: 低温工学・超電導学会
  • Place of Presentation: タワーホール船堀（江戸川）
  • Year and Date: 2017-05-22
• [Presentation] 1.6W－GM冷凍機の開発 (2017)
  • Author(s): 増山新二
  • Organizer: 低温工学・超電導学会
• [Presentation] Characteristics of a 1.6 W Gifford-McMahon cryocooler with a double pipe regenerator (2017)
  • Author(s): S. Masuyama, T. Numazawa
  • Organizer: Cryogenics Engineering Conference
  • Int'l Joint Research
• [Presentation] Achievement of 1.5 W at 4.2 K by using a double pipe regenerator (2016)
  • Author(s): S. Masuyama, T. Numazawa
  • Organizer: Asian International Cryogenic Materials Conference and Cryogenics and Superconductivity Society of Japan 50th Anniversary Conference
  • Place of Presentation: 金沢歌劇座（金沢市）
  • Year and Date: 2016-11-07
  • Int'l Joint Research
• [Presentation] A Double Pipe Regenerator for a 4K Gifford-McMahon Cryocooler (2016)
  • Author(s): S. Masuyama, T. Numazawa
  • Organizer: International Cryocooler Conference
  • Place of Presentation: The Town and Country Resort & Convention Center (San Diego)
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] A double pipe regenerator for a 4K Gifford-McMahon cryocooler (2016)
  • Author(s): S. Masuyama and T. Numazawa
  • Organizer: International Cryocooler Conference
  • Place of Presentation: Town and Country Hotel and Convention Center (San Diego)
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] 第2段目蓄冷器形状の等価的変化による冷凍能力への効果 (2016)
  • Author(s): 増山新二
  • Organizer: 低温工学・超電導学会
  • Place of Presentation: タワーホール船堀（江戸川）
  • Year and Date: 2016-05-30
• [Presentation] GM冷凍機の2段目蓄冷器内に挿入された円筒パイプによる冷凍能力の改善 (2015)
  • Author(s): 増山新二
  • Organizer: 低温工学・超電導学会
  • Place of Presentation: 産業技術総合研究所（つくば）
  • Year and Date: 2015-05-27