Development of an Isothermal Journal Bearing Employing Heat-Pipe Cooling Technology

Abstract

This paper reports the development of an isothermal journal bearing by employing heat-pipe cooling technology for improved thermal-tribological performance. A stainless-steel bearing with a number of heat-pipe grooves which use methanol as the working fluid was designed and constructed to verify the heat-transfer mechanism in the isothermal journal bearing. The constructed journal bearing was tested to evaluate its thermal performance. The experimental results indicated that the heat pipe uniformly distributes the “frictional heat” along the entire circumference of the bearing. As a result, the journal bearing becomes a nearly isothermal element. Experimental data also indicate that with the heat pipe as a heat sink, the bearing can work at a much higher thermal load.

Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in Toronto, Ontario, Canada, October 26–28, 1998

Notes

Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in Toronto, Ontario, Canada, October 26–28, 1998