Abstract
We report on recent progress in the development of two versions of coaxial Stirling type pulse tube cold fingers that were designed for operation on commercial linear Stirling compressors with nominal input power of 200 W (Leybold Polar SC7) and of 100 W (AIM SL400), respectively. The coaxial cold finger driven by the AIM SL400 compressor at 100 W input power reaches a no-load temperature below 40 K and provides a cooling power of 3.6 W at 80 K. Between 50 W and 120 W input power, the COP (cooling power/input power) at 80 K is larger than 3%. The other coaxial cold finger driven by the Leybold POLAR SC7 compressor achieves a COP of 3.3–3.7% at 100–250 W input power. For comparison, the performance data of the U-type and inline versions of the above pulse tube cold fingers are also presented in this paper. The cooling performance of the different pulse tube cold fingers is compared by means of the coefficient of performance based on the motor power of the linear compressors.
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References
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Yang, L.W., Thummes, G. (2005). Development of Stirling-Type Coaxial Pulse Tube Cryocoolers. In: Ross, R.G. (eds) Cryocoolers 13. Springer, Boston, MA. https://doi.org/10.1007/0-387-27533-9_20
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DOI: https://doi.org/10.1007/0-387-27533-9_20
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-23901-9
Online ISBN: 978-0-387-27533-8
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