Abstract
Interest in miniaturization of pulse tube coolers necessitated its operation at higher frequencies where fluid inertia effects start to show significant influence on the performance of the cooler. Commonly used means to achieve optimum performance of the cooler are orifice or capillary tube and double inlet. Fluid inertia at higher frequencies provide another means to achieve optimum performance. This type of phase shifter is referred in literature as “neck-tube” or “inertance tube”. Ravikumar and Matsubara [Adv. Cryogenic Eng., Vol. 43] presented experimental results of the cooler using fluid inertia as phase shifter. Their results showed that as frequency increased the “inertance tube” phase shifter enhanced the cooler performance in a region where orifice or double-inlet deteriorated the performance. For similar operating conditions inertance tube phase shifter resulted in higher pressure ratios inside the pulse tube. The fluid inertia is a strong function of inertance tube cross sectional area and length. Further experimental results exploring the dependence of no-load refrigeration temperature and refrigeration load vs refrigeration temperature on frequency of operation, inertance tube diameter and length are presented here.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
R. Radebaugh, Advances in Cryocoolers, Proceedings of the 16th International Cryogenic Engineering Conference/International Cryogenic Materials Conference, Editors: T. Haruyama, T. Mitsui and K. Yamafuji, Elsevier, Part-1, p:33 (1997).
S. W. Zhu, S.L. Zhou, N. Yoshimura and Y. Matsubara, Phase Shift Effect of the Long Neck Tube for the Pulse Tube Refrigerator, Cryocoolers 9, Editor: R.G. Ross, Jr., p:269 (1997).
A. Tominaga, Phase Controls for Pulse-Tube Refrigerator of the Third Generation, Cryogenic Engineering, Vol. 27,No. 2, p: 146 (1992) (in Japanese).
D. L. Gardner and G.W. Swift, Use of Inertance in Orifice Pulse Tube Refrigerators, Cryogenics, Vol. 37,No. 2, p: 117(1997).
K. Kanao, N. Watanabe and Y. Kanazawa, A Miniature Pulse Tube Refrigerator for Temperatures Below 100K, Cryogenics, Vol. 34, ICEC Supplement, p: 167 (1994).
T. Haruyama and H. Inoue, Cooling Characteristics of a Modified Miniature Pulse Tube Refrigerator, Advances in Cryogenic Engineering, Vol. 41B, p: 1427 (1996).
K.V. Ravikumar and Y. Matsubara, Pulse Tube Refrigerator Based on Fluid Inertia, Advances in Cryogenic Engineering, Vol. 43 (1998) (in press).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Kluwer Academic Publishers
About this chapter
Cite this chapter
Ravikumar, K., Matsubara, Y. (2002). Experimental Results of Pulse Tube Cooler with Inertance Tube as Phase Shifter. In: Ross, R.G. (eds) Cryocoolers 10. Springer, Boston, MA. https://doi.org/10.1007/0-306-47090-X_34
Download citation
DOI: https://doi.org/10.1007/0-306-47090-X_34
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-306-46120-0
Online ISBN: 978-0-306-47090-5
eBook Packages: Springer Book Archive