NDLI: Powerplant Lubricant Selection for Improved Efficiency and Environmental Impact Reduction

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gregory, F. Simmons Evgeny, A. Kuznetsov Sergei, B. Glavatskih
Copyright Year	2010
Abstract	Computational models were used to optimize bearing performance by adjusting a number of lubricant properties. This computational optimization showed that the most beneficial characteristics to hydrodynamic bearing operation were high viscosity index (VI) and high specific heat capacity. Four environmentally adapted synthetic lubricants were developed to provide these characteristics including: ISO VG32 with 259 VI, ISO VG22 with 245 VI, ISO VG22 with 336 VI, and ISO VG15 with 226 VI. A full scale bearing test machine was then operated with these lubricants in addition to mineral based turbine oils, ISO VG68 with 103 VI and ISO VG32 with 105 VI, to determine the effect on bearing performance and to validate the models. The new lubricants reduced bearing power loss by up to 20% and significantly reduced bearing temperatures with somewhat reduced film thickness. The machine was then operated to provide equivalent minimum viscosity with the new lubricants by varying inlet temperature, finding that changes in power loss were less substantial with equivalent minimum viscosity. Comparison of simulated and experimental results led to development of a simple, practical method to estimate benefits and operational parameters for lubricants based on viscosity grade, viscosity index and a simplified description of the machine’s bearings. Other, less tangible, factors considered are bio-degradeability and impact of power loss reduction.
Starting Page	429
Ending Page	437
Page Count	9
File Format	PDF
ISBN	9780791844298
DOI	10.1115/IMECE2010-37419
Volume Number	Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
Conference Proceedings	ASME 2010 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2010-11-12
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Viscosity Temperature Lubricants Oils Bearings Minerals Film thickness Machinery Optimization Petroleum Specific heat Synthetic lubricants Power stations Turbines
Content Type	Text
Resource Type	Article

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