Evaluation of Hydride Compressor Elements for the Planck Sorption Cryocooler

Bowman, R. C.; Prina, M.; Barber, D. S.; Bhandari, Pradeep; Crumb, D.; Loc, A. S.; Morgante, G.; Reiter, Joseph W.; Schmelzel, M. E.

doi:10.1007/0-306-47919-2_83

Cited by 13 publications

(15 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another unit (ZrNi-4) was just aged at 473 K and x = 1.5 for an identical period of time. A dozen additional ZrNiH 1.5 sorbent actuators were subsequently fabricated and temperature cycled for a thousand times prior to their integration into compressor elements for a laboratory demonstration sorption cooler [40,41]. During the assembly of these latter actuators the heater attachment has been changed to incorporate the lessons learned from the results obtained with the first four units.…”

Section: Resultsmentioning

confidence: 99%

“…13. When heat is applied to the CE sorbent bed to raise its temperature and allow it to supply hydrogen at high pressure, it is important to avoid parasitic heat leaks from the CE to the aluminum outer shell mounted on its radiator/cooling plate [40,41]. During this period with the switch turned OFF (i.e.…”

Section: Resultsmentioning

confidence: 99%

“…The tests performed on the first generation of heat switches (ZrNi-1 to ZrNi-4) lead to the development of a second batch of heat switches (EBB-GGA #1-12) that were used on the engineering breadboard (EBB) of the Planck sorption cryocooler [40,41]. The twelve EBB-GGA units were tested independently before the selection of six of them that were installed on the EBB compressor elements.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Degradation study of ZrNiH1.5 for use as actuators in gas gap heat switches

Prina

Bowman

Kulleck

2004

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Degradation study of ZrNiH1.5 for use as actuators in gas gap heat switches

Prina

Bowman

Kulleck

2004

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…A successful test of the breadboard Planck sorption cooler was conducted in February 2002, 14 following significant development of the refrigerators compressor elements. 15 The flight coolers are currently in fabrication, with the first qualification/flight unit scheduled for delivery and instrument integration in early 2004, followed by the second flight unit a year later.…”

Section: Planck Cooler Developmentmentioning

confidence: 99%

NASA Space Cryocooler Programs—An Overview

Ross

Boyle

2003

Cryocoolers 12

View full text Add to dashboard Cite

Mechanical cryocoolers represent a significant enabling technology for NASA's Earth and Space Science missions. An overview is presented of ongoing cryocooler activities within NASA in support of current flight projects, near-term flight instruments, and long-term technology development. NASA programs in Earth and space science observe a wide range of phenomena, from crop dynamics to stellar birth. Many of the instruments require cryogenic refrigeration to improve dynamic range, extend wavelength coverage, and enable the use of advanced detectors. Although, the largest utilization of coolers over the last decade has been for instruments operating at medium to high cryogenic temperatures (55 to 150 K), reflecting the relative maturity of the technology at these temperatures, important new developments are now focusing at the lower temperature range from 4 to 20 K in support of studies of the origin of the universe and the search for planets around distant stars. NASA's development of a 20K cryocooler for the European Planck spacecraft and its new Advanced Cryocooler Technology Development Program (ACTDP) for 6-18 K coolers are examples of the thrust to provide low temperature cooling for this class of missions. COOLERS ON NEAR-TERM EARTH AND SPACE SCIENCE MISSIONSIn spring 2002 three new cryocooler systems were launched into space to support NASA missions. Two of the three were based at least partially on the Oxford cooler technology that first flew on the Improved Stratospheric and Mesospheric Sounder (ISAMS) instrument in 1991; this type of cooler has demonstrated multi-year lifetime in orbit, and has been adopted by many long-life instruments to enable new and improved science. The third cooler, the NICMOS cooler, was the first space application of a long-life turbo-Brayton cooler.These recently launched coolers, which are reviewed below, have each now achieved over a year of successful operation in space, adding to the growing number of long-life space coolers enabling the acquisition of important new space-science data. These recent applications build upon the coolers of earlier NASA missions, such as those on the MOPITT, ASTER and Hyperion instruments that have achieved over two years of space operation at this point. 2 Additional coolers, such as the Northrup Grumman (TRW) pulse tube coolers on the TES instrument and the Ball Aerospace Stirling cooler on the HIRDLS instrument, are in the queue for launch aboard NASA missions in early 2004 and are also described below. RHESSI Gamma-Ray SpectrometerLaunched in February 2002, the Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) uses an array of nine large germanium gamma-ray detectors to observe solar flares from 3 keV to 25 GeV. The detector

show abstract

“…Another significant milestone of sorption cooler development is the 20 K Planck hydrogen cooler [31,32], the first sorption cooler launched for a long term space mission. It was designed for the European Space Agency (ESA) Planck mission, to provide a total of 1 W cooling power for cooling the Planck Low Frequency Instrument (LFI) around 20 K while providing a pre-cooling for a 4 K JT mechanical refrigerator for the High Frequency Instrument (HFI).…”

Section: Sorption Cooler and Its Historymentioning

confidence: 99%

Development of a sorption-based Joule-Thomson cooler for the METIS instrument of E-ELT

Wu¹

View full text Add to dashboard Cite

Evaluation of Hydride Compressor Elements for the Planck Sorption Cryocooler

Cited by 13 publications

References 7 publications

Degradation study of ZrNiH1.5 for use as actuators in gas gap heat switches

Degradation study of ZrNiH1.5 for use as actuators in gas gap heat switches

NASA Space Cryocooler Programs—An Overview

Development of a sorption-based Joule-Thomson cooler for the METIS instrument of E-ELT

Contact Info

Product

Resources

About