Results 141 to 150 of about 852,283 (182)

AIRS Pulse Tube Cryocooler System

1997
The TRW AIRS cooler system features redundant pulse tube cryocoolers to control the temperature of the Atmospheric Infrared Imaging Spectrometer (AIRS) instrument focal plane array. The AIRS instrument mission is to acquire high resolution atmospheric temperature profile data to enhance atmospheric weather models; AIRS is scheduled to fly on the EOS-PM
C. K. Chan, J. Raab, A. Eskovitz, R. Carden, M. Fletcher, R. Orsini   +5 more
openaire   +1 more source

Helium-3 Pulse Tube Cryocooler

2003
A three-stage pulse tube refrigerator has been developed for the purpose of reaching temperatures as low as 1.5 K using 3He as the working medium. This work is a continuation of the research on a three-stage pulse tube refrigerator started in 1999 at Eindhoven University of Technology; during that effort a minimum average temperature of 1.78 K was ...
I.A. Tanaeva, A.T.A.M. de Waele
openaire   +1 more source

Modeling Pulse Tube Cryocoolers with CFD

AIP Conference Proceedings, 2004
A commercial computational fluid dynamics (CFD) software package is used to model the oscillating flow inside a pulse tube cryocooler. Capabilities for modeling pulse tubes are demonstrated with preliminary case studies and the results presented. The 2D axi‐symmetric simulations demonstrate the time varying temperature and velocity fields in the tube ...
openaire   +1 more source

A NON-TUBE INERTANCE DEVICE FOR PULSE TUBE CRYOCOOLERS

AIP Conference Proceedings, 2010
Inertance Pulse Tube Cryocoolers make use of a long tube for phase shifting and optimization of performance. This long tube presents a challenge for packaging in most applications, and is also a concern for environments where vibration is present (e.g., launch).
S. W. K. Yuan, D. G. T. Curran, J. S. Cha, J. G. Weisend   +3 more
openaire   +1 more source

Pulse tube refrigerator — an alternative cryocooler?

Cryogenics, 1986
Abstract The pulse tube refrigerator may offer an alternative to cryocooler designs such as those based on the Stirling cycle or of the Gifford-McMahon type. In the pulse tube, refrigeration is produced without the use of active components operating at low temperature thus obviating a major source of unreliability.
openaire   +1 more source

Impedance Measurements of Inertance Tubes for Pulse Tube Cryocoolers

Advanced Materials Research, 2013
The impedance of the inertance tubes which include the mass flows, pressure amplitudes and phase shifts between them at the inlet of the inertance tubes were measured by correcting the mass flows at the surface of the compressor piston. The experimental results are compared with the theoretical values based on simplified turbulent-flow thermoacoustic ...
S.S. Li, Y.N. Wu
openaire   +1 more source

Linear adjustable inertance tubes for pulse tube cryocoolers

International Journal of Refrigeration, 2018
Abstract Inertance tube is coupled with Stirling Pulse Tube Cryocooler because its ability of varying the phase angle of pressure and mass flow thereby could potentially increase the performance of the pulse tube cryocooler. The discrepancy between the theoretically designed inertance tube and the installed one causes tons of work for the researchers
Wenjie Zhou, John M. Pfotenhauer, Gregory F. Nellis   +2 more
openaire   +1 more source

Pulse tube cryocoolers for industrial applications

AIP Conference Proceedings, 2002
Stirling-type, high frequency pulse tube cryocoolers have received considerable interest in the past decade due to their high reliability, low vibration, and high efficiency. Most of the previous development of Stirling-type pulse tube cryocoolers has focused on relatively small machines with cooling powers in the range of 5 W at 80 K.
openaire   +1 more source

High Capacity Pulse Tube Cryocooler

2003
High capacity pulse tube coolers are presently under development at CEA/SBT. The Development Models of the pulse tube cold finger feature an in-line configuration to ease manufacturing and optimisation of the sizing. A cooling power of 5.2 W at 80 K has been achieved with 200 W of total electrical power, 128 W PV work, and a rejection temperature of ...
Charles, I., Duval, Jean-Marc, Duband, L., Trollier, Thierry, Ravex, A, Martin, Jean-Yves   +5 more
openaire   +2 more sources

AN INTEGRATED MINIATURE PULSE TUBE CRYOCOOLER AT 80K

AIP Conference Proceedings, 2008
Two integrated models of coaxial miniature pulse tube coolers based on an experimental model are manufactured. Performance of the integrated models is compared to that of the experimental model. Reliability and stability of an integrated model are tested and improved.
H. L. Chen, L. W. Yang, J. H. Cai, J. T. Liang, L. Zhang, Y. Zhou, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, Jennifer Lock   +20 more
openaire   +1 more source