Energy and Climate

Renewable Energy

More Efficient Fuel Cells under Development by Engineers

Solar power and other sources of renewable energy can help combat global warming but they have a draw­back: they don’t produce energy as predictably as generating plants powered by oil, coal, or natural gas. Solar panels only produce electricity when the sun is shining, and wind turbines are only productive when the wind is brisk. […]

High-Efficiency Solar Thermochemical Reactor for Hydrogen Production

On June 16th, the Department of Energy Fuel Cell Technology Office (FCTO) announced $20 million for 10 R&D projects to advance technologies that can economically produce and deliver hydrogen to power fuel cells from diverse, domestic, and renewable resources thereby enabling substantial reductions in energy use and carbon emissions. Advancing these technologies is critical to […]

Sandia Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind Conference

In June, Brian Owens (in Sandia’s Analytical Structural Dynamics Dept.) and Todd Griffith (in Sandia’s Water Power Technologies Dept.) traveled to DTU Lyngby (Technical University of Denmark: Copenhagen, Denmark) to present Sandia research on deep-water multiple-megawatt vertical-axis wind turbines (VAWTs). High tip-speed ratios, low frequency structural vibration modes, and flexible blades of multiple-megawatt VAWTs can […]

Novel Nanoparticle Production Method Could Lead to Better Lights, Lenses, Solar Cells

Titanium-dioxide (TiO2) nanoparticles show great promise as fillers to tune the refractive index of anti-reflective coatings on signs and optical encapsulants (protective coverings or coatings) for light-emitting di­odes (LEDs), solar cells and other optical devices. Industry has shunned TiO2 nanoparticles because they have been difficult and expensive to make, and current methods produce particles that are too […]

Investigations on Marine Hydrokinetic Turbine Foil Structural Health Monitoring Presented at GMREC METS

Structural health-monitoring (SHM) systems can provide key information to improve marine hydrokinetic (MHK) device management: reduce operations & maintenance costs, mitigate failures, and improve capacity factor. While present systems include instrumentation to measure power output, few adequately monitor mechanical loads and structural response, which are equally important for determining device performance and integrity. Fiber-optic Bragg […]

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