Energy & Sustainability – Page 130

CIGS PV Power Enhancement from Photonic Crystal Fiber Concentrators

Shepard S., Carver G., Louisiana Tech University, US

Two of the most promising means of reducing the cost per kilowatt of photovoltaic (PV) systems are: 1) to reduce the cost – which includes recent progress made in CIGS; and/or 2) to increase the [...]

Synthesis and characterization of Silver doped TiO2 nano films for

Murty V.V.S., Choudhry R.J., Deshore V., Government Autonomous Model Holkar Science College, IN

Utilization of Solar Energy is based on the ability of semiconductor particles to function as photo catalysts by promoting various oxidation and reduction reactions under sunlight. For the improvement of its catalytic capability, Silver doped [...]

The characterization of p-GaAs/i-InGaAsN/n-GaAs hetero-junction solar cell with various DMHy flow rates

Wu T.H., National Cheng Kung University, TW

Since the high efficiency tandem solar cell sturcture has been reported, the conversion efficiency of triple-junction solar cells would achieve 40% with concentrator. To further enhance the conversion efficiency of solar cells, the fourth-junction is [...]

Novel Building Integrated Solar Concentrators

Chatten A.J., Farrell D.J., Bose R., Dixon A., Poelking C., Gödel K.C., Mazzer M., Barnham K.W.J., Imperial College London, US

In developed countries 60% of the electricity consumed is attributable to commercial and public buildings. Even in the UK, the solar energy incident on buildings is more than 7x the electrical energy they consume. This [...]

Solar Power Technologies & Materials

Vertical-Axis Wind Turbines for Powering Cellular Communication Towers

Plourde B.D., Abraham J.P., Mowry G.S., University of St. Thomas, US

A vertical-axis turbine has been designed to power cellular communication towers. The turbine’s design is specifically focused on providing continuous power to manage the tower’s electronics without interfering with the tower structure. The design of [...]

A Smarter Grid enables Communal MicroGrids

Mohn T., General MicroGrids, Inc, US

As policy makers seek to integrate a serious sociological and environmental issue into energy production, the typical utility is faced with not only technology upgrades, but also dealing with new systemic events that occur far [...]

Expermental Study of CH4/H2 Mixtures in Internal Combustion Engines

Kahraman N., Albayrak Çeper B., Akansu S.O., Bayrak M., Erciyes University, TR

In this study, an experimental study on the performance of a spark ignition engine fuelled with CH4/ H2 mixtures (90%CH4 +10%H2 and80%CH4 +20%H2)was performed at different engine speed and different injection timing coefficient (ITC). This [...]

Wind Mechanical Engineering: Energy for Water Pumping in Rural Areas in Sudan

Omer A.M., Energy Research Institute, UK

The imminent exhaustion of fossil energy resources and the increasing demand for energy were the motives for those reasonable in Sudan to put into practice an energy policy based on rational use of energy; and [...]

High-Power-Density Miniscale Renewable Energy Systems

Lyshevski S.E., Rochester Institute of Technology, US

This paper reports design, analysis, evaluations and characterization of miniscale self-sustained power generation systems. Our ultimate objective is to guarantee highly-efficient mechanical-to-electrical energy conversion, ensure premier wind- or hydro- energy harvesting capabilities, enable electric machinery [...]