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Performance optimisation of a Stirling pulse tube cryocooler with an active displacer
conference contribution
posted on 2023-06-09, 14:18 authored by M A Abolghasemi, Kun LiangKun Liang, R Stone, M Dadd, P BaileyAn in-line Stirling pulse tube cryocooler with an active displacer has been built and tested. An active displacer allows the mass flow and the pressure pulse at the cold end of the pulse tube to be easily adjusted for optimum performance. The effect of varying the active displacer phase and stroke on cryocooler performance was examined experimentally. It is demonstrated that both cooling power and efficiency have optimum displacer phase and stroke values. The pulse tube cryocooler can deliver up to 4 W of cooling at 80 K with an input power of 100 W when operating at optimal displacer phase and stroke. Moreover, a numerical Sage model was used to assess how this variation in displacer phase and stroke affects the mass flow and pressure pulse at the cold end. It is shown that the variation in displacer phase affects the cryocooler performance by varying the amplitude of the mass flow at the cold end. On the other hand, changes to the displacer stroke lead to variations in both phase and amplitude of the mass flow at the cold end.
History
Publication status
- Published
File Version
- Published version
Journal
Cryocoolers 20Publisher
ICC PressEvent name
The 20th International Cryocooler Conference (ICC 20)Event location
Burlington, VT, USEvent type
conferenceEvent date
18-21 June 2018ISBN
9781934021064Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-07-31First Open Access (FOA) Date
2018-08-01First Compliant Deposit (FCD) Date
2018-07-30Usage metrics
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