Development of bearings for a small high speed cryogenic turboexpander

Development of bearings for a small high speed cryogenic turboexpander Purpose – The purpose of this paper is to examine the development of aerodynamic thrust bearings and aerodynamic journal bearings applied to a small high speed cryogenic turboexpander in Indian conditions. Design/methodology/approach – As a part of indigenous programme in the process of development, some input parameter was taken from the available literature and then dimensions were optimized and computed while taking care to minimize fabrication constraints. Findings – A series of tests were conducted to confirm the findings. Detailed study of the effect of stability and vibration of bearings was taken up. The maximum rotational speed obtained was 200,000 rpm. Practical implications – The outcome may help the designers, researchers and manufacturers of these components. Originality/value – Although manufacturers design and develop the bearings of turboexpanders for their production, no academic literature has been available for this purpose until now. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

Development of bearings for a small high speed cryogenic turboexpander

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Publisher
Emerald Publishing
Copyright
Copyright © 2012 Emerald Group Publishing Limited. All rights reserved.
ISSN
0036-8792
DOI
10.1108/00368791211196835
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to examine the development of aerodynamic thrust bearings and aerodynamic journal bearings applied to a small high speed cryogenic turboexpander in Indian conditions. Design/methodology/approach – As a part of indigenous programme in the process of development, some input parameter was taken from the available literature and then dimensions were optimized and computed while taking care to minimize fabrication constraints. Findings – A series of tests were conducted to confirm the findings. Detailed study of the effect of stability and vibration of bearings was taken up. The maximum rotational speed obtained was 200,000 rpm. Practical implications – The outcome may help the designers, researchers and manufacturers of these components. Originality/value – Although manufacturers design and develop the bearings of turboexpanders for their production, no academic literature has been available for this purpose until now.

Journal

Industrial Lubrication and TribologyEmerald Publishing

Published: Feb 3, 2012

Keywords: India; Turbines; Mechanical behaviour of materials; Bearings; Cyrogenic engineering; Turboexpanders; Aerodynamic thrust bearing; Aerodynamic tilting pad journal bearing

References

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