Sustainable Materials – Page 42

Hydroelectric Technologies and Geographical Prospects in Louisiana

Langlois R., Leevongwat I., Rastgoufard P., University of New Orleans, US

As the world grows we struggle to meet our energy demands while trying to limit the greenhouse gas emissions. We must be responsible in exploring the most rational options for meeting the energy needs. Hydroelectric [...]

New Technique for Identifying Optimal Generating Units Parameters

Abdel Samed S.F., Helwan University, EG

This paper focuses on selecting optimal wind generator turbine according to the site wind information so that the output energy can optimized while maximizing the utilization of the wind power available at the location. The [...]

Design and Analysis of a Small-Scale Vertical-Axis Wind Turbine

Abraha J.P., Mowry G., Erickson R., University of St. Thomas, US

A novel, vertical-axis wind turbine has been designed and analyzed for use in crowded urban and rooftop environments. The features of the turbine include a contoured blade which maximizes the rotational velocity while minimizing drag. [...]

Diamond-Hardfaced TiC/Ti Composite for Submersible Pump Bearings in Geothermal Systems

Voronov O.A., Kear B.H., Diamond Materials Inc., US

Renewable energy sources include electrical generators driven by steam from geothermal sources. Typically, the bearings of submersible pumps used in geothermal systems are hardfaced with WC/Co and WC/CoCr composites. To enhance bearing performance, we have [...]

Geothermal Power from Dry Wells

Michaelides E.E., Davis A., University of Texas at San Antonio, US

A numerical simulation for the determination of geothermal power production from abandoned oil wells by injecting and retrieving a secondary fluid was performed. The analysis takes into consideration local geothermal gradients and typical well depths [...]

Fiber Resin Composite Bearings in Wave Energy Converter

Kim M.R., Ankeny A.E., GGB Bearing Technology, US

The Pelamis Wave Energy Converter is an electric power generation system that uses a revolutionary power conversion unit to convert ocean wave energy to electricity. It harnesses the undulating motion of ocean waves by translating [...]

Renewables: Wind, Geothermal, Hydro, Wave

Lithium selective adsorption on low-dimensional TiO2 nanoribbons

Zhang Q-H, Li S-P, Sun S-Y, Yin X-S, Yu J-G, East China University of Science and Technology, CN

Low-dimensional TiO2-related nanomaterial with high morphology specificity, including nano-tube, -wire, -sheet, -fiber and -ribbon, had attracted particular interest in advanced applications as catalyst, solar-energy conversion semiconductor, gas sensor and electrochemical material, as it was discovered [...]

NanoZeolites – porous nanomaterials for cleantech, encapsulation and triggered release applications

Daniell W., Sauer J., Kohl A., NanoScape AG, DE

Recent advances in hydrothermal synthesis techniques and procedures to modify the surfaces of the particles have led to the development of a new class of material – the NanoZeolites. The availability of porous, nanocrystalline materials [...]

Nanoscaled Mg(OH)2 Used as Flame Retardant Additive

Zhou B., Zhou Z., Wu Z., Fransson M., Zhou B., Zhou Z., Headwaters Technology Innovation LLC, US

Headwaters Technology Innovation (HTI) has applied aqueous colloidal chemistry with great success in the development of “bottom-up” nanomaterials and nanotechnologies. One such material is a nano-scaled magnesium hydroxide, NxCat® Mg(OH)2, which is primarily used as [...]