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ISBN : 978-1-56700-478-6

Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)
2017, December 27-30 , BITS Pilani, Hyderabad, India

EXPERIMENTAL INVESTIGATIONS ON DEVELOPMENT OF A SINGLE STAGE G-M TYPE PULSE TUBE REFRIGERATOR

Get access DOI: 10.1615/IHMTC-2017.1680
pages 1211-1215

Abstract

A G-M type single stage pulse tube refrigerator has been designed, fabricated and operated with a helium compressor of 1.5 kW. A double-valved double-inlet configuration instead of conventional single-valved one is successfully used in experiments to reduce the DC flow. Operating under double inlet mode, 258 K minimum temperature has been reached at an average pressure of 12 bar and frequency 2 Hz. When operated as orifice type, 260 K is achieved at an average pressure of 9 bar. Minimum temperature at cold end is achieved at optimum opening of double inlet valve at 5 mm and orifice at 3.86 mm as double inlet type. A comparative study of results relating to cool-down, valve optimization and pressure variation, when the system is operated at different configurations is presented here.
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