Energy & Sustainability – Page 171

Thin film solar cell based on microcrystalline nanostructure silicon grown in low temperature condition

Chung Y.B., Lim J.S., Kim H., Kim J.K., Hwang N.M., Kim H., Kim J.K., Park Y.J., Seoul National University, KR

High quality microcrystalline silicon thin film grown by Hot-Wire Chemical Vapor Deposition(HWCVD) and subsequently manufactured solar cells are presented. Intrinsic layer photoconductivity data is provided for one of the film quality measures, and the result [...]

Parallel Integrated Solar Cell Circuits for Split Solar Spectrum Light Source

Li Y., Shi F., Texas A&M University, US

Among the various solar energy application technologies, the photovoltaic technology is, in particular, the most desirable technology for large-scale applications due to the fact that the solar energy in optical form is directly transformed into [...]

Large area optimized thin film nano solar cells on metal sheets

Toivola M., Peltola T., Miettunen K., Halme J., Aitola K., Lund P.D., Helsinki University of Technology, FI

We have upscaled stainless steel based dye-sensitized solar cell (DSC) from small, 0.32 cm2 active area laboratory sized test cells to 6 cm x 6 cm large area ”minimodule”. This is a continuation to our [...]

Solar and PV Technologies

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 [...]