Junseok Ko, Hankil Yeom, Hyobong Kim, Yong-Ju Hong, Sehwan In, Seong-Je Park
언어
영어(ENG)
URL
https://www.earticle.net/Article/A255259
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원문정보
초록
영어
Cryogenic cooling system for HTS electric power devices requires a reliable and efficient high-capacity cryocooler. A Striling 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. Electrical performance of fabricated linear compressor is verified by experimental measurement of thrust constant. The developed Stirling cryocooler has gamma-type configuration. Piston and displacer are supported with flexure spring. A slit-type heat exchanger is adopted for cold and warm-end, and the generated heat is rejected by cooling water. In cooling performance test, waveforms of voltage, current, displacement and pressure are obtained and their amplitude and phase difference are analysed. Moreover, temperatures of cooling water, housing and linear motor are recorded and electric power parameters of driving circuit are also obtained. The developed Stirling cryocooler reaches to 47.8 K within 23.4 min. with no-load. From heat load tests, it shows cooling capacity of 440 W at 78.1 K with 6.45 kW of electric input power and 19.4 of % Carnot COP.
목차
Abstract 1. INTRODUCTION 2. DESIGN AND FABRICATION 2.1. Linear Compressor 2.2. Cold Part 3. COOLING PERFORMANCE TEST 3.1. Experimental Setup 3.2. Experimental results 4. CONCLUSIONS ACKNOWLEDGMENT REFERENCES
키워드
Stirling cryocoolerLinear compressorFlexure
저자
Junseok Ko [ Korea Institute of Machinery & Materials, Daejeon, Korea ]
Corresponding author
Hankil Yeom [ Korea Institute of Machinery & Materials, Daejeon, Korea ]
Hyobong Kim [ Korea Institute of Machinery & Materials, Daejeon, Korea ]
Yong-Ju Hong [ Korea Institute of Machinery & Materials, Daejeon, Korea ]
Sehwan In [ Korea Institute of Machinery & Materials, Daejeon, Korea ]
Seong-Je Park [ Korea Institute of Machinery & Materials, Daejeon, Korea ]