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Valve timing effect on the cooling performance of a 4 K pulse tube cooler

โœ Scribed by L.M Qiu; G Thummes

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
393 KB
Volume
42
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

Generally, a compressor together with a rotary valve system generates the pressure oscillation in GM-type cryocoolers. The timing of the rotary valve, which is one of the key operating parameters for cryocoolers, determines the relationship between intake and exhaust processes. A systematic investigation of valve timing effects on cooling performance of a two-stage 4 K pulse tube cooler (PTC) is reported. The experiments show that the optimization of valve timing can considerably improve the cooling performance for both stages. For the same PTC, a performance comparison for operation on different compressors with various input powers ranging from 0.5 to 6.0 kW is also presented.

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