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

Abolghasemi, M A, Liang, K, Stone, R, Dadd, M and Bailey, P (2018) Performance optimisation of a Stirling pulse tube cryocooler with an active displacer. The 20th International Cryocooler Conference (ICC 20), Burlington, VT, US, 18-21 June 2018. Published in: Cryocoolers 20. ICC Press ISBN 9781934021064 (Accepted)

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Abstract

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.

Item Type: Conference Proceedings
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Related URLs:
Depositing User: Kun Liang
Date Deposited: 31 Jul 2018 10:53
Last Modified: 03 Dec 2018 11:21
URI: http://srodev.sussex.ac.uk/id/eprint/77456

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