Can Renewables Provide Big Energy in America's Electric Future?

submitted by: RASEIBoulder
Renewable energy sources currently provide about only about 10% of the nation’s electricity, with most of that coming from large hydro sources. Renewable energy sources are scattered around the country, with much of the best wind and solar resources located in remote locations. These sources also may have a big footprint compared to conventional sources. Finally, solar and wind are often described as intermittent due to their variable and uncertain output. As a consequence, it is often...

Piston Rotary Engine - THREEE CHIDOT - ABSOLUTE motion

linked profile(s): synison
submitted by: synison
SYNISON Laboratory LTD R E V E A L S * the Innovative & Impressively FLEXIBLE MOTION PATTERN of Pistons of the New Piston Rotary Engine: "THREEE CHIDOT" (Absolute Motion). { this video is just a demo; for a Complete Piston Absolute Position Array (CPAPA) and/or a Complete Toothing Profile Point Array (CTPPA), of an Optimized Model, visit: www.synison.gr } (*) WO/2009/040588: Application Example & Claim 7: - YELLOW peripheral stripe represents the INTAKE slot - MAGENTA...

Feasibility Of Predominant Wind And Solar Energy Over The 48 United States

submitted by: RASEIBoulder
It is widely believed that wind and solar power are too variable in time to supply a large percentage of energy needs. This perception is based on wind and solar energy production over small domains, but is it true for a large domain? A study was conducted to determine the resource availability of wind and solar energy over the 48 US states. A meteorological assimilation model was used to estimate hourly wind and solar resources for three years – 2006 through 2008. Geographic data were...

Re-evaluating The Hubbert Curve And The Global Petroleum Revolution: A New Era - Details

submitted by: RASEIBoulder
Summary: Why have the predicted global oil and natural gas shortages and demise of civilization by 2010 related to these vanishing supplies not occurred? The static view has created a pessimistic outlook based on historical perspective such as the Hubbert curve analysis which results in the inescapable and inevitable depletion that will result in catastrophic consequences for civilization. A new paradigm, a dynamic or petroleum system view demonstrates a different and more optimistic...

High-altitude Wind Energy Generation

submitted by: RASEIBoulder
Sustainable energy generation is one of the most urgent challenges that mankind is facing nowadays. Many countries have set ambitious objectives to increase the share of energy produced from clean and renewable sources. Unfortunately, the actual renewables are still not competitive with respect to fossil fuels, due to the high costs of the related technologies, their variable and non-uniform availability and their low power density per unit area. Thus, a breakthrough would be needed in...

Phase-shift Plasma Turbine - Interplanetary Spaceflight

submitted by: MFerreiraJr
The Phase-shift Turbine consists of a set of concentric coils, axially rotated from each other, and feed by phased RF sources, producing radial and longitudinal sequences, which results in helical moving force, ionizing intake gas/particle/ion, generating continuous unidirectional thrust. It was designed in order to operate in atmospheric environments, mainly during takeoff, and in space to reuse exhaust gases from chemical rockets to booster the overall ISP, enhancing utilization of both...