Cryocoolers 8 pp 149-161 | Cite as

Performance Characterization of the Sunpower Cryocooler

  • G. T. Smedley
  • R. G. RossJr.
  • D. M. Berchowitz


The Sunpower 140K cryocooler is an integral in-line single compressor/single displacer configuration that features the use of low friction gas bearings on all running surfaces. The design is very compact, simple, and light-weight. This type of cryocooler was originally intended for use in the electronics industry. The original machine provided 35 watts of cooling at 223 K at a heatsink temperature of 45°C with 65 watts of input power. The 140 K cooler, characterized by JPL, is a modified version of the original cooler and achieves 4 to 8 watts of cooling over the temperature range 120 K to 140 K with less than 70 watts of input power.

The Sunpower 140K cryocooler was characterized by JPL in a number of performance areas including thermal, vibration, resonance, EMI, and off-state parasitics. The results of these measurements are presented; where possible, the measurements are compared with calculated performance curves.


Input Power Thermal Performance Load Curve Drive Voltage Compressor Stroke 
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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • G. T. Smedley
    • 1
  • R. G. RossJr.
    • 1
  • D. M. Berchowitz
    • 2
  1. 1.Jet Propulsion LaboratoryPasadenaUSA
  2. 2.Sunpower Inc.AthensUSA

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