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Performance optimisation of a Stirling pulse tube cryocooler with an active displacer

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conference contribution
posted on 2023-06-09, 14:18 authored by M A Abolghasemi, Kun LiangKun Liang, R Stone, M Dadd, P Bailey
An 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 20

Publisher

ICC Press

Event name

The 20th International Cryocooler Conference (ICC 20)

Event location

Burlington, VT, US

Event type

conference

Event date

18-21 June 2018

ISBN

9781934021064

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-07-31

First Open Access (FOA) Date

2018-08-01

First Compliant Deposit (FCD) Date

2018-07-30

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