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

2017 Fiscal Year Final Research Report

• 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
• 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.

Free Research Field

低温工学