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Experimental study on pulse tube refrigeration with helium and nitrogen mixtures

✍ Scribed by Z.H Gan; G.B Chen; G Thummes; C Heiden

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
370 KB
Volume
40
Category
Article
ISSN
0011-2275

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✦ Synopsis

An experimental investigation on two-component multi-phase helium and nitrogen mixtures in a single-stage pulse tube refrigerator was carried out. The experimental results show that both coecient of performance (COP) and cooling power can be improved to some extent at above 70 K when the nitrogen fraction in the mixture is less than 25%. An approximate stable temperature platform at the triple point 63.15 K of nitrogen, which is independent of nitrogenΓ•s fraction, is obtained when the cooling power is below 7 W.

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