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2006年08月07日

【期刊论文】Thermodynamic performance prediction of pulse tube refrigeration with mixture Øuids☆

陈国邦， Guobang Chen a， *， Zhihua Gan a， G. Thummes b， C. Heiden b

Cryogenics 40(2000)261-267，-0001，（）：

-1年11月30日

摘要

A refrigeration cycle with two isentropic and two isobaric processes, referred to as the modi

Gas mixture， Thermodynamics， Brayton cycle， Pulse tube refrigeration

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2006年08月07日

【期刊论文】Refrigeration performance enhancement of pulse tube refrigerators with He-H2 mixtures and Er3NiHx regenerative material

陈国邦， G.B. Chen *， K. Tang， Y.H. Huang， Z.H. Gan， R. Bao

Cryogenics 44(2004)833-837，-0001，（）：

-1年11月30日

摘要

The computation with heat transfer, ﬂuid ﬂow and thermodynamics indicates that higher pulse tube refrigeration performance can be achieved with He–H2 mixtures as working ﬂuids than that with pure He in the cooling temperature region of 30 K. In addition, it is found that Er3Ni, a regenerative material, is able to absorb H2 and forms Er3NiHx. The hydrogen absorption capacity of Er3Ni is about 3.5 H/Er3Ni in the H2 pressure region of 0.1-2.0 MPa at 30 ℃. The calculation shows that the regenerative performance of Er3NiH3.5 is better than that of Er3Ni due to its higher volume speciﬁc heat. Experimental results show that the pulse tube refrigeration performance in 30 K cooling temperature region is obviously enhanced with He–H2 mixtures and Er3NiHx regenerative material.

Pulse tube refrigerator: Mixture: Metallic hydride

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2006年08月07日

【期刊论文】Modification test of staged pulse tube refrigerator for temperatures below 4 K

陈国邦， Guobang Chen， Jianyao Zheng， Limin Qiu， Xuan Bai， Zhihua Gan， Pengda Yan， Jianping Yu， Tao Jin and Zhixiu Huang

，-0001，（）：

-1年11月30日

摘要

Structure modification tests of a staged pulse tube refrigerator have been carried out for the purpose of increasing the performance and simplicity. The influence of oper-ation parameters on cooling effect has been tested. To reach liquid helium tempera-tures by a two-stage pulse tube refrigerator, a double-orifice configuraton is utilized for enhancing the phase shift effect. Experimental results and a discussion are also presented.

pulse tube refrigeration， staged cOnfiguration， liquid heliuim temperature， double orifice

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2006年08月07日

【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

摘要

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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2006年08月07日

【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

摘要

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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