June 28, 2015 to July 2, 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Development of 1 kW Stirling cryocooler with using linear compressor

Jun 30, 2015, 9:00 AM
Exhibit Hall (Arizona Ballroom)

Exhibit Hall (Arizona Ballroom)

Poster Presentation CEC-03 - Cryocoolers (Non-Aerospace) C2PoB - Stirling and Pulse Tube Cryocoolers


Dr Junseok Ko (Korea Institute of Machinery & Materials)


Cryogenic cooling systems for HTS electric power devices require a reliable and efficient high-capacity cryocooler. A Stirling cryocooler with a linear compressor can be a good candidate. It has advantages of low vibration and long maintenance cycle compared with a kinematic-driven Stirling cryocooler. In this study, we developed dual-opposed linear compressor of 12 kW electric input power with two 6 kW linear motors. It is experimentally measured the electromagnetic parameters of fabricated linear motor such as thrust constant, effective resistance and inductance. The developed Stirling cryocooler has gamma-type configuration. Moving components of piston and displacer is supported with flexure spring. A slit-type heat exchange is used for cold and warm-end, and the generated heat is rejected by cooling water. In cooling performance test, electric heat is loaded to measure cooling capacity and spatial temperature distribution in cold-end heat exchanger surface. In addition, displacement of moving parts, dynamic pressure, input voltage and current are also measured during operation. With the measured experimental data, the dynamic behavior of linear compressor is discussed.

Primary author

Dr Junseok Ko (Korea Institute of Machinery & Materials)


Dr Hankil Yeom (Korea Institute of Machinery & Materials) Dr Hyobong Kim (Korea Institute of Machinery & Materials) Dr Sehwan In (Korea Institute of Machinery & Materials) Dr Seong-Je Park (Korea Institute of Machinery & Materials) Dr Yong-Ju Hong (Korea Institute of Machinery & Materials)

Presentation materials