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Cryocoolers 12 pp 627-635 | Cite as

Evaluation of Hydride Compressor Elements for the Planck Sorption Cryocooler

  • R. C. BowmanJr.
  • M. Prina
  • D. S. Barber
  • P. Bhandari
  • D. Crumb
  • A. S. Loc
  • G. Morgante
  • J. W. Reiter
  • M. E. Schmelzel

Abstract

Hydrogen sorption cryocoolers are being developed for the European Space Agency Planck mission to provide nominal 19 K cooling to instruments for measuring the temperature anisotropy ofthe cosmic microwave background with extreme sensitivity and resolution. The behavior of the metal hydride sorbent beds used in the compressor dominates both the performance and reliability of these sorption cryocoolers. The compressor elements have been designed to minimize their input power requirements and to enhance durability during extended temperature cycling while in operation. The Lanthanum-Nickel-Tin alloy LaNi4.78Sn0.22 in the sorbent beds circulates and compresses the hydrogen refrigerant gas while the ZrNi alloy is used to provide variable pressure in the gas-gap heat switches for each compressor element. Characterization tests have been performed on the compressor elements built for an Engineering Bread Board (EBB) cooler to evaluate the behavior of both the sorbent bed and gas-gap switches under conditions simulating flight operation. These results provide a basis for predicting EBB cooler performance and to identify any design deficiencies prior to fabrication of the flight compressor elements. In addition, experiments were done on compressor elements that had been operated up to several thousand cycles to assess degradation in the sorbent hydride and reduction in the effectiveness of the gas gap switches in reducing parasitic heat losses

Keywords

Vibration Test Chiller Plate Hydride Powder Cryogenic Engineer Compressor Element 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Collaudin, B. and Passvogel, T., “The FIRST and PLANCK ‘Carrier’ Missions. Description of the Cryogenic Systems”, Cryogenics, vol. 39 (1999) pp 157–165.ADSCrossRefGoogle Scholar
  2. 2.
    Wade, L.A. et al, “Hydrogen Sorption Cryocoolers for the PLANCK Mission”, in Advances in Cryogenic Engineering 45A, edited by Q-S. Shu, et al., Kluwer Academic/Plenum, New York, 2000, pp. 499–506.Google Scholar
  3. 3.
    Pearson, D., Prina, M., Borders, J., Bowman, R.C., Schmelzel, M.E., Hardy, J., Sirbi, A., Bhandari, P., Loc, A., Wade, L.A. and Nash, A. “Test Performance of a Closed Cycle Continuous Hydrogen Sorption Cryocooler”, presented at 12th International Cryocooler Conference, Cambridge, MA, June 18–20, 2002 (Submitted to These Proceedings).Google Scholar
  4. 4.
    Prina, M., Bhandari, P., Bowman, Jr., R.C., Paine, C.G., and Wade, L.A., “Development of Gas Gap Heat Switch Actuator for the Planck Sorption Cryocooler”, in Advances in Cryogenic Engineering 45A, edited by Q-S. Shu, et al., Kluwer Academic/Plenum, New York, 2000, pp. 553–560.Google Scholar
  5. 5.
    Prina, M., Kulleck, J.G., and Bowman, Jr., R.C., “Assessment of Zr-V-Fe Getter Alloy for Gas-gap Heat Switches”, J. Alloys Comp., vol. 330–332 (2002) pp. 886–891.CrossRefGoogle Scholar
  6. 6.
    Paine, C.G., Bowman, Jr., R.C., Pearson, D., Schmelzel, M.E., Bhandari, P., and Wade, L.A., “Planck Sorption Cooler Initial Compressor Element Performance Tests”, Cryocoolers 11, Kluwer Academic/ Plenum Press, New York (2001) pp. 531–540.Google Scholar
  7. 7.
    Bowman, Jr., R.C., Prina, M., Schmelzel, M.E., Lindensmith, C.A., Barber, D.S., Bhandari, P., Loc, A. and Morgante, G., “Performance, Reliability, and Life Issues for Components of the Planck Sorption Cooler”, in Advances in Cryogenic Engineering, Vol. 47, edited by S. Breon, et al. (Am. Inst. Phys., New York, 2002) pp. 1260–1267.Google Scholar
  8. 8.
    Prina, M., Bhandari, P., Bowman, R.C., Wade, L.A., Pearson, D.P., and Morgante, G., “Performance Prediction of the Planck Sorption Cooler and initial Validation”, in Advances in Cryogenic Engineering, Vol. 47, edited by S. Breon, et al. (Am. Inst. Phys., New York, 2002) pp. 1201–1208.Google Scholar
  9. 9.
    Pearson, D., Bowman, Jr., R.C., Schmelzel, M.E., Prina, M., Bhandari, P., Paine, C.G., and Wade, L.A., “Characterization and Lifecycle Testing of Hydride Compressor Elements for the Planck Sorption Cryocooler”, in Advances in Cryogenic Engineering, Vol. 47, edited by S. Breon, et al. (Am. Inst. Phys., New York, 2002) pp. 1209–1216.Google Scholar
  10. 10.
    Bowman, Jr., R.C., Lindensmith, C.A., Luo, S., Flanagan, T.B., and Vogt, T., “Degradation Behavior of LaNi5-xSnxHz (x = 0.20 to 0.25) at Elevated Temperatures”, J. Alloys Compounds, Vol. 330–332 (2002) pp. 271–275.CrossRefGoogle Scholar
  11. 11.
    Young, J.R., “Outgassing Characteristics of Stainless Steel and Aluminum with Different Surface Treatments”, J. Vac. Sci. Technol., Vol. 6 (1969) pp. 398–400.ADSCrossRefGoogle Scholar
  12. 12.
    Perkins, W.G., “Permeation and Outgassing of Vacuum Materials”, J. Vac. Sci. Technol., Vol. 10 (1973) pp. 543–556.ADSCrossRefGoogle Scholar
  13. 13.
    Le Claire, A.D., “Permeation of Gases Through Solids”, Diff. Defects Data, Vol. 34 (1983) pp.1–35.ADSCrossRefGoogle Scholar
  14. 14.
    Ishikawa, Y., Koguchi, Y., and Odaka, K., “Outgassing Rate of Some Austenitic Stainless Steels”, J. Vac. Sci. Technol., Vol. A9 (1991) pp. 250–253.ADSCrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • R. C. BowmanJr.
    • 1
  • M. Prina
    • 1
  • D. S. Barber
    • 1
  • P. Bhandari
    • 1
  • D. Crumb
    • 2
  • A. S. Loc
    • 1
  • G. Morgante
    • 3
  • J. W. Reiter
    • 2
  • M. E. Schmelzel
    • 1
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA
  2. 2.Swales AerospacePasadenaUSA
  3. 3.IASF/CNR — Sezione di BolognaBolognaItaly

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