Performance characterization of the TRW 35K pulse tube cooler

Conference · Tue Dec 31 04:00:00 UTC 1996

OSTI ID:416759

Collins, S A; Johnson, D L; Smedley, G T; Ross, Jr, R G ^[1]

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1. California Institute of Technology, Pasadena, CA (United States)

The TRW 35K pulse tube cooler is configured as an integral cooler, with the pulse tube attached perpendicular to a pair of compressors operating into a common compression chamber. The cooler was optimized for 35K operation and has a nominal cooling capacity of 850 mW at 35 K with a cooler input power of 200 W. It also provides 2 W of cooling at 60 K for 90 W of input power. The cooler was extensively characterized by JPL, measuring the thermal performance and the cooler-generated vibration and EMI as a function of piston stroke and offset position. The thermal performance was found to be quite sensitive to the piston offset position. The pulse tube parasitic conduction levels were also measured and shown to have a strong angular dependence relative to gravity. Magnetic shielding studies were performed to examine radiated magnetic emission levels from compressors with and without shielding.

• OSTI ID: 416759
• Report Number(s): CONF-950722--
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COOLING LOAD
CRYOGENICS
MECHANICAL VIBRATIONS
NOISE
ORIFICES
PERFORMANCE
REFRIGERATORS
TEMPERATURE RANGE 0013-0065 K