Renewable Energy

August 2017

The researchers make their SSAs using a dip-and-dry technique which is considerably simpler than common manufacturing methods for SSAs.

A Low-Cost Method for Solar-Thermal Conversion That's Simpler and Greener

Columbia University School of Engineering and Applied Science

New York, NY -- Researchers led by Yuan Yang, assistant professor of materials science and engineering at Columbia Engineering, along with colleagues at the Department of Chemistry at Columbia University and at Stanford University, have developed a new, scalable, and low-cost "dip and dry" method for fa

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Date:

08/28/2017

Nanoparticles Pollution Rises 30 Percent When Flex-Fuel Cars Switch From bio to Fossil

Fundação de Amparo à Pesquisa do Estado de São Paulo

When ethanol prices at the pump rise for whatever reason, it becomes economically advantageous for drivers of dual-fuel vehicles to fill up with gasoline. However, the health of the entire population pays a high price: substitution of gasoline for ethanol leads to a 30% increase in the atmospheric concentration of

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Date:

08/28/2017

How 139 Countries Could be Powered by 100 Percent Wind, Water, and Solar Energy by 2050

Cell Press

The latest roadmap to a 100% renewable energy future from Stanford's Mark Z. Jacobson and 26 colleagues is the most specific global vision yet, outlining infrastructure changes that 139 countries can make to be entirely powered by wind, water, and sunlight by 2050 after electrification of all energy sectors. Suc

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Date:

08/23/2017

Noise Sensitive Applications Want Ultralow Noise LDO Regulators

Amit P. Patel, Senior Design Engineer, Power Products & Steve Knoth, Senior Product Marketing Engineer – Power Products, Linear Technology Corporation

Linear Regulators are integrated circuits that step a voltage down from a higher voltage to a lower voltage without the need of an inductor. The low dropout linear regulator (LDO) is a special type of linear regulator in which the dropout voltage – the differential between the input-to-output voltages needed to

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Date:

08/21/2017

Determining the State of Health of Batteries Quickly and Precisely

Dipl.-Ing. Andreas Mangler, Rutronik, Dr.-Ing. Olfa Kanoun and Dipl.-Ing. Thomas Günther, Chemnitz University of Technology

When Li-ion batteries age, their performance drops. Current methods still require complex instrumented laboratory-based tests to determine how quickly and to which degree this occurs. In contrast, a procedure developed by Chemnitz University of Technology now enables quick and precise diagnosis. It ensures the re

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Date:

08/21/2017

Sandia National Laboratories researchers Eric Monroe, James Jaryenneh and Tyler Eckles operate raceways growing a consortium of cyanobacteria.

Biofuels From Bacteria

DOE/Sandia National Laboratories

LIVERMORE, Calif.--You might not cook with this sugar, but from a biofuels standpoint, it's pretty sweet. A Bay Area company has patented a group of three single-celled, algae-like organisms that, when grown together, can produce high quantities of sugar just right for making biofuels. Sandia National Laboratories is

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Date:

08/21/2017

Deep-UV Probing Method Detects Electron Transfer in Photovoltaics

Ecole Polytechnique Fédérale de Lausanne

Sensitized solar cells consisting of a molecular or solid-state sensitizer that serves to collect light and inject an electron into a substrate that favors their migration are among the most studied photovoltaic systems at present. Despite its importance in determining the potential of a photovoltaic device, cu

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Date:

08/15/2017

Buildings could soon be able to convert the sun's energy into electricity without the need for solar panels, thanks to innovative new technology

Buildings to Generate Their own Power With Innovative Glass Blocks

University of Exeter

Buildings could soon be able to convert the sun's energy into electricity without the need for solar panels, thanks to innovative new technology. Renewable Energy experts from the University of Exeter are developing a pioneering new technique that could accelerate the widespread introduction of net-zero energy bui

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Date:

08/15/2017

Figure 1. Power rail voltages and tolerances required by ICs continue to decrease. These dynamics challenge traditional oscilloscope measurement approaches as the noise of the scope and probe system impairs the ability to make accurate measurements of small signals.

Precise Power Integrity Measurements

Joel Woodward, Strategic Oscilloscope Planner at Rohde & Schwarz in Munich

Development teams face increasing power integrity challenges. FPGAs, ASICs, and standard components semiconductor devices continue to increase in gate count. Each of the millions of gates on an integrated circuit requires current to switch. As devices can consume tens of amps and total power must be managed, DC

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Date:

08/09/2017

Figure 1. Extending the frequency and voltage range of a probe requires a front-end network of resistors and capacitors.

Probing Tips for High-Performance, Low-Power Circuits

Andy Heltborg, Tektronix

Low-power circuits combine high speed and low-power consumption in a single component, presenting a number of probing and testing challenges. Since many low-power devices are also high-speed systems, there is a need to test and verify their performance. Testing the low-power components for compliance with industry st

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Date:

08/09/2017

Accurate Power Measurement: The Key to Energy Efficiency

Anoop Gangadharan, Yokogawa

In response to pressures to optimise energy efficiency throughout industry, a number of trends are emerging across the power landscape: · In the automotive sector, we are seeing increased electrification of the power train and the growing adoption of hybrid, electric, plug-in and fuel-cell based transportation

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Date:

08/09/2017

Figure 3 illustrates the computer-aided design model for design configuration #13. The turbine blades are assumed to be made of carbon fiber and the turbine shaft and blade supports are made of Aluminum 2024.

Vertical Axis Wind Turbines can Offer Cheaper Electricity for Urban and Suburban Areas

American Institute of Physics

WASHINGTON, D.C. -- According to a prediction made by the U.S. Department of Energy, wind energy could provide 20 percent of electricity in the U.S. by the year 2030. This has motivated researchers from the University of Utah's Department of Mechanical Engineering to investigate the performance capabilities and

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Date:

08/03/2017

These Solar Glasses with lens-fitted semitransparent organic solar cells supply two sensors and electronics in the temples with electric power.

Solar Glasses Generate Solar Power

Karlsruher Institut für Technologie (KIT)

Organic solar cells are flexible, transparent, and light-weight - and can be manufactured in arbitrary shapes or colors. Thus, they are suitable for a variety of applications that cannot be realized with conventional silicon solar cells. In the Energy Technology journal, researchers from KIT now present sunglasses

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Date:

08/02/2017