Abstract
Cryocoolers operating at liquid helium temperature span a number of application domains, such as cooling of superconducting magnets, SQUID devices etc. GM type cryocoolers are widely used at liquid helium temperature but with shortcomings of using an oil-lubricated compressor that require regular maintenance and rotary valves that reduces the efficiency of the cryocooler. We are developing an alternative system that makes use of a Vuilleumier type thermal compressor. The system consists of a Stirling type pulse tube cryocooler that provides a cold heat sink to a thermal compressor. The thermal compressor generates pressure wave to drive a second pulse tube cold head. We experimentally studied the influence of pre-cooling temperature and frequency on the performance of the pulse tube cold head. The lowest recorded temperature is 24.3 K with a pressure ratio of 1.18 and a frequency of 3 Hz. In this paper, the design of the cooling system and preliminary experimental results are presented
Original language | English |
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Title of host publication | Refrigeration Science and Technology |
Place of Publication | Bucharest |
Pages | 32-39 |
DOIs | |
Publication status | Published - 22 Jun 2016 |
Event | 1st International Conference IIR of Cryogenics and Refrigeration Technology, ICCRT 2016: Cryogenics and Refrigeration Technology - The Hotel Capitol, Bucharest, Romania Duration: 22 Jun 2016 → 25 Jun 2016 Conference number: 1 http://iccrt2016.criofrig.ro/ |
Conference
Conference | 1st International Conference IIR of Cryogenics and Refrigeration Technology, ICCRT 2016 |
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Abbreviated title | ICCRT |
Country/Territory | Romania |
City | Bucharest |
Period | 22/06/16 → 25/06/16 |
Internet address |
Keywords
- IR-101041
- METIS-317638