中国科技论文在线

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2006年08月07日

【期刊论文】Discussion on refrigeration cycle for regenerative cryocoolers

陈国邦， Guobang Chen*， Zhihua Gan， Yanlong Jiang

Cryogenics 42(2002)133-139，-0001，（）：

-1年11月30日

Based on review and analysis of thermodynamic efficiency e of the Carnot cycle and the cycle with two isothermal and two polytropic processes, another thermodynamic cycle with two isentropic and two polytropic processes, which can achieve the Carnot value of thermodynamic efficiency, is testiﬁed theoretically. Thermodynamic efficiency expressions of a number of ideal regenerative refrigeration cycles are derived, including the ideal pulse tube refrigeration cycle. A classiﬁed branch chart and a plot of ideal thermodynamic efficiency of regenerative refrigeration cycles are given for the purpose of comparison.

Thermodynamics， Refrigeration cycle， Carnot cycle， Brayton cycle， Pulse tube

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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】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】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】EXPerlmental study on a double-orifice two-stage pulse tube refrigerator

陈国邦， G. Chen， L. Qiu， J. Zheng， P. Yan， Z. Gan， X. Bai and Z. Huang

Cryogenics 1997 Volume 37, Number 5，-0001，（）：

-1年11月30日

摘要

This paper describes the basic structure of a two-stage pulse tube refrigerator. A novel phase shifter termed a double-orifice is introduced. The machine was driven by a valved compressor and the on-off timing was controlled by a computer and solenoids. The lowest temperature of 3.1 K at the cold end of the second stage was achieved.

pulse tube refrigerator， multiple staging methods， cryocoolers， experi-mental investigation

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