Experimental Study on Journal Gas Bearing with Axial Slot for a Miniature Air Turboexpander

Abstract:

A new type of hydrostatic journal gas bearing with axial slot of tangential gas entry for miniature air turboexpander is firstly developed in this paper. This bearing configuration is presented and constructed to fit manufacture simplicity. The experimental investigations are carried out to reveal the relationship between bearing parameters and instability threshold speed. It is feasible to increase the stability of hydrostatic journal gas bearing by adopting this kind of configuration with axial slot of tangential gas entry. Some valuable tested results are obtained to reveal the optimum slot height and radial clearance for this miniature air turboexpander.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 611-614
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.611
• Online since: November 2012
• Authors: Ru Gang Chen, Ya Jun Nie, Quan Zhou, Chao Gong, Tao Chen
• Keywords: Air Bearing, Axial Slot, Hydrostatic, Journal Bearing, Stability, Turboexpander

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