Full Text:   <1057>

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CLC number: TB661

On-line Access: 2015-07-03

Received: 2015-03-24

Revision Accepted: 2015-06-08

Crosschecked: 2015-06-16

Cited: 0

Clicked: 1830

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Li-min Qiu

http://orcid.org/0000-0003-1943-8902

Guenter Thummes

http://orcid.org/0000-0003-0371-962X

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Journal of Zhejiang University SCIENCE A 2015 Vol.16 No.7 P.577-585

10.1631/jzus.A1500057


Operating characteristics of a single-stage Stirling-type pulse tube cryocooler with high cooling power at liquid nitrogen temperatures


Author(s):  Jiu-ce Sun, Marc Dietrich, Li-min Qiu, Guenter Thummes

Affiliation(s):  Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   Limin.Qiu@zju.edu.cn, Guenter.Thummes@ap.physik.uni-giessen.de

Key Words:  Stirling-type pulse tube cryocooler (SPTC), High power, Operating characteristics, Temperature non-uniformity


Jiu-ce Sun, Marc Dietrich, Li-min Qiu, Guenter Thummes. Operating characteristics of a single-stage Stirling-type pulse tube cryocooler with high cooling power at liquid nitrogen temperatures[J]. Journal of Zhejiang University Science A, 2015, 16(7): 577-585.

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author="Jiu-ce Sun, Marc Dietrich, Li-min Qiu, Guenter Thummes",
journal="Journal of Zhejiang University Science A",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500057"
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%T Operating characteristics of a single-stage Stirling-type pulse tube cryocooler with high cooling power at liquid nitrogen temperatures
%A Jiu-ce Sun
%A Marc Dietrich
%A Li-min Qiu
%A Guenter Thummes
%J Journal of Zhejiang University SCIENCE A
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500057

TY - JOUR
T1 - Operating characteristics of a single-stage Stirling-type pulse tube cryocooler with high cooling power at liquid nitrogen temperatures
A1 - Jiu-ce Sun
A1 - Marc Dietrich
A1 - Li-min Qiu
A1 - Guenter Thummes
J0 - Journal of Zhejiang University Science A
VL - 16
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SP - 577
EP - 585
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1500057


Abstract: 
The operating characteristics are important for design and optimization of pulse tube cryocoolers, in particular for those with high cooling power, which up to now have been seldom extensively investigated. In this study, the dependence of cooling performance on the charge pressure and operating frequency has been investigated, both numerically and experimentally. A numerical model based on Sage software was established. Experiments were performed on a home-made single-stage high power stirling-type pulse tube cryocooler (SPTC) working at liquid nitrogen temperatures. The results revealed that each charge pressure corresponds to an optimum frequency with respect to compressor and regenerator efficiency. A lower charge pressure results in a higher cryocooler efficiency, but the delivered maximum pV power is significantly reduced due to the stroke limit of the pistons in the linear compressor. The influence of operating characteristics on the temperature non-uniformity in the regenerator was also investigated. By optimizing the charge pressure and frequency, the minimum no-load temperature was decreased to 46.9 K at 56.5 Hz and 2.0 MPa. A cooling power of 300 W at 71.8 K was measured with an electrical input power of 8.9 kW.

液氮温区单级大功率斯特林型脉管制冷机工作特性研究

目的:探索充气压和运行频率等工作特性对大功率脉管制冷机最低制冷温度、制冷量以及回热器温度不均匀性的影响,期望进一步提升制冷机工作性能。
方法:1.通过理论计算模拟工作频率在40-70Hz,充气压力在1.5-2.5 MPa下工作特性对制冷机性能的影响;2.实验研究充气压力为1.7-2.4 MPa,并在谐振频率附近工作时制冷机性能以及回热器温度不均匀性随充气压力、运行频率以及输入功率的变化。
结论:1.制冷机运行在1.9-2.1 MPa充气压力下,因平衡了制冷温度和焓流损失,故能取得优异性能,且每一个充气压力对应一个最优的工作频率;2.通过优化充气压力和工作频率,脉管制冷机能够达到46.9 K的最低制冷温度,此时工作频率为56.5 Hz,充气压力为2.0 MPa。在8.9 kW输入功率下制冷机能够在72 K时提供304 W制冷量。

关键词:斯特林型脉管制冷机;大功率;工作特性;温度不均匀性

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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