Improved performance of an indigenous Stirling type pulse tube cooler and pressure wave generator

Kumar, Kranthi J and Jacob, S and Karunanithi, R and Narasimham, GSVL and Damu, C and Praveen, T and Samir, M (2015) Improved performance of an indigenous Stirling type pulse tube cooler and pressure wave generator. In: 25th International Cryogenic Engineering Conference and International Cryogenic Materials Conference, JUL 07-11, 2014, Enschede, NETHERLANDS, pp. 434-439.

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Abstract

Sustained efforts have been made in our laboratory to improve the performance of an indigenously developed pressure wave generator by reducing the mechanical losses and the required input power. An acoustically matching pulse tube cooler, with a design target of 0.5 W at 80 K, was designed using Sage and experience gained from previous studies. The pulse tube cooler was fabricated and tested. The effect of regenerator stacking pattern on the cooler performance was studied by filling the regenerator with mesh of the same size # 400 and with multi meshes # 250, 325, 400. In present experiments, regenerator with # 400 mesh at 30 bar filling pressure performed better with more energy efficiency. A no load temperature of 74 K was achieved with input power of 59 W corresponding to a cooling power of 0.22 W at 80 K. Parasitic heat load to the cooler was measured be 0.68 W. This heat load is primarily by heat conduction through the regenerator and pulse tube wall. By reducing the wall thickness from 0.30 mm to 0.15 mm, the parasitic loads can be reduced by 50%. (C) 2015 The Authors. Published by Elsevier B.V.

Item Type:	Conference Proceedings
Additional Information:	Copy right of this article belongs to the ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology
Date Deposited:	22 Oct 2016 07:11
Last Modified:	22 Oct 2016 07:11
URI:	http://eprints.iisc.ac.in/id/eprint/54687

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