物性測定用小型GM冷凍機の性能試験

概要

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The performance test of a small size refrigerator has been done. The type of the refrigeratoris two-stage Gifford-McMahon (GM). The electric power consumption is 1.3 kW at 60 Hz.One of the purposes of this GM refrigerator is to using for physical properties measurement.A hybrid type regenerator material is filled in the 2nd-stage regenerator to obtain the coolingtemperature of 4 K level. The 2nd-stage of the GM refrigerator cooled from room temperature to 3.2 K in about 3.5 hours and the 1st-stage temperature was 33.7 K. Thecooling power of the 2nd-stage was 50 mW at 4.2 K. It succeeded in the measurement of theresistivity characteristics depending on temperature of copper wire. This GM refrigeratorhas the acrylic chamber instead of the stainless steel chamber to visualizing the 2nd-stage. It will be enabled to carry out many experiments.
大島商船高等専門学校の論文
2004-11-01