✦ LIBER ✦

Pulse tube refrigerator with low temperature switching valve: concept and experiments

✍ Scribed by Jingtao Liang; Cunquan Zhang; Jinghui Cai; Erchang Luo; Yuan Zhou; Lie Xu

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 677 KB
Volume: 37
Category: Article
ISSN: 0011-2275
DOI: 10.1016/s0011-2275(97)00075-1

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✦ Synopsis

The concept of a new type of pulse tube refrigerator, termed pulse tube refrigerator with low temperature switching valve, is proposed. It is suitable for industrial applications that require larger refrigeration powers. In this kind of pulse tube refrigerator a recuperative heat exchanger instead of a regenerator is used and a switching valve is installed at the cold end of an orifice pulse tube. The adiabatic expansion efficiency of the orifice pulse tube with low temperature switching valve, which actually works as a new type of expander, has been experimentally investigated. Adiabatic efficiencies higher than 40% have been achieved in the preliminary experiments. Methods for increasing the adiabatic efficiency are discussed.

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