To investigate how to reach 4 K using a pulse tube and the best multiple staging configuration for the pulse tube, experiments were performed on several types of singlestage pulse tube refrigerators coupled with a Gifford-McMahon cryocooler. The minimum temperature obtained at the cold end of the pu
The experimental investigation of a two-stage pulse tube refrigerator
โ Scribed by C. Wang; Y.L. Ju; Y. Zhou
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 442 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0011-2275
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โฆ Synopsis
A two-stage pulse tube refrigerator in combination with a rotary valve and a valved compressor has been constructed. Its performance and the effects of the operating parameters were investigated.
A minimum temperature of 11.5 K and a cooling capacity of 1.3 W at 20 K were obtained at a frequency of 4.2 Hz and a system pressure of 1.5 MPa. The 2nd-stage regenerator was only filled with lead shot.
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We report on the design and test of a three-stage refrigerator, consisting of a liquid nitrogen bath with heat exchangers and two subsequent pulse tube stages. The liquid nitrogen bath serves for precooling the oscillating 4He-gas flow. The PTR stages are operated in orifice and double-inlet mode wi
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