Author(s): Yijun Shi
Linked Author(s):
Keywords: No Keywords
Abstract: Hydropower plays a crucial role in the global transition toward renewable energy, yet the environmental impact of conventional lubrication systems used in hydropower turbines and bearings remains a concern. Mineral-oil-based lubricants pose risks of leakage and long-term contamination of aquatic ecosystems. This study presents the development and evaluation of a glycerol-based, fossil-free, fully biodegradable, and water-soluble lubrication concept designed for hydropower bearing applications. The proposed lubrication approach utilizes glycerol derived from renewable resources to provide effective lubrication while ensuring minimal environmental impact in case of leakage or discharge into water systems. Laboratory experiments and tribological testing were conducted to evaluate viscosity behavior, friction characteristics, load-carrying capacity, and compatibility with typical hydropower bearing materials. Results indicate that glycerol-based formulations can provide stable lubrication regimes while significantly reducing friction compared to conventional lubricants. The findings demonstrate the feasibility of environmentally benign lubrication systems for hydropower machinery and highlight their potential role in supporting sustainable hydro-environment engineering. The study contributes to the ongoing green transition in hydropower technology by proposing a fossil-free lubrication alternative that aligns energy production with environmental protection.
Year: 2026