Experimental Results on Inertance and Permanent Flow in Pulse Tube Coolers

2002 ◽  
pp. 281-290 ◽  
Author(s):  
L. Duband ◽  
I. Charles ◽  
A. Ravex ◽  
L. Miquet ◽  
C. Jewell
Keyword(s):  
Experimental Results ◽  
Pulse Tube

Permanent flow in low and high frequency pulse tube coolers – experimental results

Cryogenics ◽  
1999 ◽  
Vol 39 (9) ◽  
pp. 777-782 ◽  
Author(s):  
I Charles ◽  
L Duband ◽  
A Ravex
Keyword(s):  
High Frequency ◽  
Experimental Results ◽  
Pulse Tube ◽  
Frequency Pulse

Impedance Measurements of Inertance Tubes for Pulse Tube Cryocoolers

2013 ◽  
Vol 718-720 ◽  
pp. 739-744
Author(s):  
S.S. Li ◽  
Y.N. Wu
Keyword(s):  
Theoretical Model ◽  
Turbulent Flow ◽  
Experimental Results ◽  
Operating Parameters ◽  
Pulse Tube ◽  
Impedance Measurements ◽  
General Rules ◽  
Wide Range ◽  
Compressor Piston ◽  
Mass Flows

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 model. The wide range of impedance measurements with different inertance tube geometries and operating parameters enable us to summarize the general rules of their effects on impedance respectively, also the differences between the experiments and calculations can be used to modify the theoretical model.

Numerical and Experimental Investigations of an Orifice Type Cryogenic Pulse Tube Refrigerator

2012 ◽  
Author(s):  
Dion Savio Antao ◽  
Bakhtier Farouk
Keyword(s):  
Porous Media ◽  
Experimental Studies ◽  
Travelling Wave ◽  
Cryogenic Cooling ◽  
Experimental Results ◽  
Experimental Investigations ◽  
Pulse Tube ◽  
Pulse Tube Refrigerator ◽  
Mean Pressure ◽  
Energy Equations

A helium filled orifice type pulse tube refrigerator (OPTR) was designed, built and operated to provide cryogenic cooling. The OTPR is a travelling wave thermoacoustic refrigerator that operates on a modified reverse Stirling cycle. The experimental studies are carried out at various values of the mean pressure of helium (0.35 MPa – 2.2 MPa), amplitudes of pressure oscillations, frequencies of operation and sizes of orifice opening. The experimental results are compared with the predictions from a detailed time-dependent numerical model. In the CFD model, the compressible forms of the continuity, momentum and energy equations are solved for both the refrigerant gas (helium) and the porous media regions (the regenerator and the three heat-exchangers) in the OPTR. An improved representation of heat transfer in the porous media is achieved by employing a thermal non-equilibrium model to couple the gas and solid (porous media) energy equations. The model predictions show better comparisons with the experimental results when the effects of wall thicknesses of the various components of the OPTR are included in the model.

scholarly journals Experimental results on the free cooling power available on 4K pulse tube coolers

2009 ◽  
Vol 150 (1) ◽  
pp. 012038 ◽  
Author(s):  
T Prouvé ◽  
H Godfrin ◽  
C Gianèse ◽  
S Triqueneaux ◽  
A Ravex
Keyword(s):  
Experimental Results ◽  
Cooling Power ◽  
Pulse Tube ◽  
Free Cooling

Experimental results on V-M type pulse tube refrigerator

Cryogenics ◽  
2002 ◽  
Vol 42 (6-7) ◽  
pp. 433-437 ◽  
Author(s):  
Wei Dai ◽  
Yoichi Matsubara ◽  
Hisayasu Kobayashi
Keyword(s):  
Experimental Results ◽  
Pulse Tube ◽  
Pulse Tube Refrigerator
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