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【期刊论文】A thermoacoustically driven pulse tube refrigerator capable of working below 120 K
陈国邦, T. Jin, G. B. Chen*, Y. Shen
Cryogenics 41(2001)595-601,-0001,():
-1年11月30日
Based on the discussion of the matching problems between the prime mover and pulse tube, a self-made standing-wave ther-moacoustic prime mover is used to drive a coaxial single-stage pulse tube refrigerator A lowest refrigeration temperature of 138 K was obtained from the preliminary tests in 1999 Then, some improvements have been made to the heat exchangers and the con-nection between prime mover and pulse tube The minimum cooling temperatures of ll9.7 and ll7.6 K have been obtained from therecent experiments with helium andhelium-argon mixture filling of 2.0 MPa as the working fluids, respectively Itis a great progress for the standing-wave machine and provides the possibility of liquefying natural gas of 0.2 MP.
Thermoacoustics, Pqlse tube refrigerator, Cryogenic temperature
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104浏览
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【期刊论文】Experimental study on pulse tube refrigeration with helium and nitrogen mixtures☆
陈国邦, Z.H. Gan a, G.B. Chen a, *, G. Thummes b, C. Heiden b
Cryogenics 40(2000)333-339,-0001,():
-1年11月30日
An experimental investigation on two-component multi-phase helium and nitrogen mixtures in a single-stage pulse tube refrigerator was carried out. The experimental results show that both coeÅcient of performance (COP) and cooling power can be improved to some extent at above 70 K when the nitrogen fraction in the mixture is less than 25%. An approximate stable temperature platform at the triple point 63.15 K of nitrogen, which is independent of nitrogen’s fraction, is obtained when the cooling power is below 7 W.
Gas mixtures, Pulse tube, Two-phase
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76浏览
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陈国邦, G.B. Chen*, T. Jin
Cryogenics 39(1999)843-846,-0001,():
-1年11月30日
Experiments have been made on the onset and damping behavior of the oscillation in a thermoacoustic prime mover with nitrogen as the working
Thermoacoustics, Prime mover, Hysteretic loop
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33浏览
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【期刊论文】Influence of buffer on resonance frequency of thermoacoustic engine
陈国邦, G.B. Chen *, J.P. Jiang, J.L. Shi, T. Jin, K. Tang, Y.L. Jiang, N. Jiang, Y.H. Huang
Cryogenics 42(2002)223-227,-0001,():
-1年11月30日
Frequency matching is of great importance to a thermoacoustically driven pulse tube refrigeration system. To compute the resonance frequency of thermoacoustic engines, the fluid impedance method is introduced. The calculations of the thermoacoustic engines with different arrangements of buffer have been carried out. The influence of the buffer arrangements and the volume on the resonance frequency as well as the acoustic power of thermoacoustic engines is also discussed.
Thermoacoustic engine, Frequency matching, Pulse tube refrigeration
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66浏览
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