March 2022

Valves, Pumps and Turbomachinery

Rotating equipment oil systems optimization guideline

The industry is moving away from oil shaft seals and hydraulic speed control for turbines to advanced alternatives.

FIG. 1. Lube oil supply system. Courtesy of M.E. Crane Consultant. The industry is moving away from oil shaft seals and hydraulic speed control for turbines to advanced alternatives. Many old installations have been upgraded to dry gas seals and electronic governors. However, few changes have been made to the combined oil systems, leaving the system overdesigned for its new purpose and presenting an energy optimization opportunity. Optimization solutions to existing systems vary depending on system requirements; however, the solutions discussed in this article include utilizing a lower-speed motor, magnetic coupling, recycle line and resizing th

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