Extended range of the Lockheed Martin Mini cryocooler

•Design based on unit originally developed for NASA and higher capacity unit for ESA.•The unit is in a split configuration with the cold head separated from the compressor.•Cold head arranged in U shape with inertance coil in plenum on warm flange.•This unit provides a compact system for many active...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2017-12, Vol.88, p.125-128
Main Authors: Frank, D., Sanders, L., Nason, I., Mistry, V., Guzinski, M., Roth, E., Olson, J.R.
Format: Article
Language:English
Subjects:
Compressors
Cooling
Design standards
Low temperature physics
Studies
Turbofan engines
Online Access:Get full text
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Summary:•Design based on unit originally developed for NASA and higher capacity unit for ESA.•The unit is in a split configuration with the cold head separated from the compressor.•Cold head arranged in U shape with inertance coil in plenum on warm flange.•This unit provides a compact system for many actively cooled instruments. This paper describes the expanded performance range of the Lockheed Martin Mini cryocooler thermal mechanical unit (TMU). The design is based on the standard unit originally developed for NASA and a higher capacity developed for ESA. These higher capacity Mini units are in a split configuration with the cold head separated from the compressor. The TMU provides cooling over a wide range of temperatures with a weight of 1.9 kg including the 1.4 kg compressor and the 0.45 kg cold head. The unit provides for 3.5 W cooling at 105 K and approximately 7 W cooling at 150 K for 293 K reject temperature with 60 W of input power.
ISSN:0011-2275
1879-2235
DOI:10.1016/j.cryogenics.2017.10.020