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Home/ Clean Energy Transition/ Contents contributed and discussions participated by Hans De Keulenaer

Contents contributed and discussions participated by Hans De Keulenaer

Hans De Keulenaer

EcoPinion - Issue 2 | ecoalign - 0 views

  • The second EcoPinion Survey provides further evidence of a green gap between willingness to adopt or purchase green products, services and technologies, and consumer value perceptions around those offerings. While concern for the environment is at an all time high, consumers think that many forms of green technology (renewable, energy efficient or recycled materials) are cost prohibitive, difficult to understand and maintain, and aesthetically unappealing.
Hans De Keulenaer

IEEE Spectrum: Synthetic Fuel From a Solar Collector - 0 views

  • 7 January 2008—At first blush, you might lump claims about a machine that supposedly turns sunshine, air, and water into fuel in the same category as e-mails insisting that someone in Nigeria will pay you handsomely to help free up a large sum of money. But researchers at the U.S. Department of Energy’s Sandia National Laboratories, in Albuquerque, say they have created a device that can break water into hydrogen and oxygen using sunlight, or in a another reaction convert carbon dioxide, to carbon monoxide that combines with hydrogen to make hydrocarbons such as methanol, ethanol, and even gasoline or diesel fuel. The technology holds the promise of using the same resources as biomass-to-fuel schemes but with potentially greater efficiency, according to the researchers.
Hans De Keulenaer

GM-VOLT : Chevy Volt Concept Site » Lockheed Martin Signs Agreement with EEStor - 0 views

  • We have previously discussed a secretive Texas company called EEStor, who are reported to be working on a new type of ultracapacitor that can hold 10x the energy in 1/10th the weight of typical batteries, at a fraction of the cost. They have an agreement to produce caps for Zenn electric cars but to date have not shown any prototypes. This has led some to suspect EEStor as not having the technology they report. Today, however, Lockheed Martin, the major U.S. military equipment manufacturer has announced a partnership agreement with EEStor to develop energy applications.
Hans De Keulenaer

Electric grid meets Web 2.0, savings results - 0 views

  • The Department of Energy has just wrapped up a fascinating experiment in Washington State in which it provided both homeowners and their appliances with tools that can sense stress on the power grid. Homeowners who made use of the tools saved money—approximately 10 percent on their electric bills—and the grid was more stable, too.
Hans De Keulenaer

50 people who could save the planet | Environment | The Guardian - 0 views

  • Stranded polar bears, melting glaciers, dried-out rivers and flooding on a horrific scale - these were the iconic images of 2007. So who is most able to stop this destruction to our world? A Guardian panel, taking nominations from key environmental figures, met to compile a list of our ultimate green heroes
Hans De Keulenaer

IEEE Spectrum: Silicon Nanowires Turn Heat to Electricity - 0 views

  • Two separate teams, one at Caltech and the other at the University of California, Berkeley, reported that they could increase silicon's ability to convert heat into electric current by as much as 100 times. If they can use what they've learned to improve silicon even further, or translate their findings to other materials, the discovery could lead to new ways to cool computer chips, build refrigerators, or get more power out of car engines.
Hans De Keulenaer

Sustainable is Good : The 2008 "7 R's" of Anti-Sustainability - 0 views

  • With tongue in cheek and apologies to the Wal-Mart version we have all heard, please consider these thoughts that are sure to help us NOT achieve sustainability in 2008.
Hans De Keulenaer

Japan, U.S., EU to float energy body / Joint proposal to be made at G-8 summit - 0 views

  • Japan, the United States and the European Union will jointly propose at this year's Group of Eight summit meeting that an international organization be established to study and evaluate the energy-saving measures of countries, including China and India, The Yomiuri Shimbun learned Saturday.
Hans De Keulenaer

ScienceDirect - Energy Conversion and Management : Evaluation of small wind turbines in... - 0 views

  • The island of Barbados is 99% dependent on fossil fuel imports to satisfy its energy needs, which is unsustainable. This study proposes a 10 MW distributed wind energy scheme using micro wind turbines (WT) of horizontal (HAWT) and vertical axis (VAWT) configurations. These units are rated less than 500 W, and the scheme is hereafter referred to as mWT10. mWT10 is compared to the proposed 10 MW medium WT farm by the Barbados Light & Power Company (BL&P). The economic bottom line is the levelized cost of electricity (LCOE). The results highlight the BL&P proposal as the best economic option at BDS$0.19 per kWh, while that of both mWT10 configurations exceeds the conventional cost of BDS$0.25 by two to nine times. This is attributed to significantly higher relative installation and operational costs. However, the financial gap between mWT10 LCOE and the retail price of electricity is much smaller due to a large fuel surcharge passed on to each customer. Annual additional benefits of using wind energy include: greenhouse gas emissions savings of 6–23 kt of carbon dioxide; and anavoided fuel costs of BDS$1.5–5.3 million.
Hans De Keulenaer

ASU Researchers Use Bacteria To Generate Electricity - Ecofriend - 0 views

  • Researchers at the Biodesign Institute of Arizona State University have come up with an alternative way of generating electricity. In a new study featured in the journal Biotechnology and Bioengineering, lead author Andrew Kato Marcus and colleagues César Torres and Bruce RittmannThey mentioned that they are using the tiniest organisms on the planet—bacteria—for this purpose. They added that they are looking forward to commercialization of a promising microbial fuel cell (MFC) technology. The microbial fuel cell will generate electrical energy by using any kind of waste, such as sewage or pig manure.
Hans De Keulenaer

Generating Electricity From The Waves | EcoSpace.cc - 0 views

  • Ocean waves are said to have the highest energy density of energy renewable energy source - one thousand denser than wind. Finavera Renewables is a publicly traded company focusing on the development of renewable energy resources and technologies; such as the AquaBuOY (yes, spelled that way) - a floating buoy structure that converts the energy from waves into clean electricity.. Clusters of AquaBuOYs can be combined into arrays generating output from a few hundred kilowatts to several hundred megawatts and are made up of components that have been proven in other marine industries for decades.
Hans De Keulenaer

Stanford's nanowire battery holds 10 times the charge of existing ones - 0 views

  • Stanford researchers have found a way to use silicon nanowires to reinvent the rechargeable lithium-ion batteries that power laptops, iPods, video cameras, cell phones, and countless other devices. The new version, developed through research led by Yi Cui, assistant professor of materials science and engineering, produces 10 times the amount of electricity of existing lithium-ion, known as Li-ion, batteries. A laptop that now runs on battery for two hours could operate for 20 hours, a boon to ocean-hopping business travelers.
Hans De Keulenaer

Three airships that might fly you to Europe someday : Yahoo! Green - 0 views

  • In a carbon-conscious world, passenger flight is difficult to rationalize. But we've got to get from point A to point B -- there are births, funerals, weddings, and graduations to attend. Right now, there's no alternative to traditional heavier-than-air travel. Here are three airships that have a good chance at changing that
Hans De Keulenaer

First Conventional Light Aircraft Powered by Electricity Flies over France : TreeHugger - 0 views

  • You think a Tesla Roadster is news? Try flying in the Electra, a single-seater airplane with a 25 horsepower motor and 47 (105 lbs) kilograms of lithium-polymer batteries. Anne Lavrand, the president of the APAME group, said. "This will be a real aeroplane that will have an airworthiness certificate. It's a machine built for anyone with a pilot's license."
Hans De Keulenaer

Trees Are Not The Answer To Climate Change : Environmental Graffiti - 0 views

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    What was once seen as the solution to all our CO2 problems, the ability of trees to soak up anthropogenic carbon dioxide, trees has itself been hindered by global warming.
Hans De Keulenaer

triphow.com » Air Travel Switches To Electricity - 0 views

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    Charles Bremner, Times, UK offers up some great news for air travelers. The dream of inexpensive, ecofriendly aviation has come closer to reality after a French test pilot achieved the first flight in a conventional light aircraft powered by an electric motor. The Electra, a wood-and-fabric single-seater, flew for 48 minutes for 50km (30 miles) around the southern Alps, winning a global race to apply battery power to a fixed-wing standard aircraft….Electric power for larger aircraft, including airliners, is also on the horizon, with research by Nasa and Boeing into the holy grail of the field: hydrogen-fed fuel cells. These will drive electric motors with power like those on French high-speed trains.
Hans De Keulenaer

India to provide subsidy for solar power plants | Environment | Reuters - 0 views

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    India will subsidize the running of solar power plants to help develop a renewable energy infrastructure, where high costs can be prohibitive, the minister for renewable energy said on Wednesday. Renewable energy accounts for about 7.5 percent of India's installed generation capacity of 127,673 MW, a rate that compares favorably with much of the rest of the world. Much of this capacity is wind-based, and the share of solar power is small. "My ministry will provide financial assistance amounting to 12 rupees (30 cents) per kilowatt hour in case of solar photovoltaic and 10 rupees per kilowatt hour in case of solar thermal power fed to the electricity grid," Vilas Muttemwar said in a press conference.
Hans De Keulenaer

Voltage dips at an automobile manufacturer | Leonardo ENERGY - 0 views

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    Various departments at a car manufacturing plant are suffering from regular process outages due to voltage dips. These dips are causing production losses in the Metal Operation, Spray Coating, and Assembly departments that directly affect the productivity of the plant. The cost of those losses is directly related to the profile of the voltage dip (duration and depth). Various options to reduce these costs are investigated, with particular emphasis upon the Spray Coating and Assembly departments. The following conclusions can be drawn: 1. The number and type of dips occurring at the point of connection of the plant is regular. It is similar to what is monitored at other medium voltage stations that have the same grid structure. 2. A detailed analysis of the spray coating process reveals that installing a 'restart on the fly' system on the large conditioning fans substantially reduces the related voltage dip losses. 3. A detailed analysis of the Assembly department shows that there are two main bottlenecks that determine the restart time after a dip (the 'Drive' sub-process and the 'Cockpit', 'Marking', and 'Transport chain' users). These bottlenecks can be removed by installing a Dynamic Voltage Restorer (DVR), which results in a payback time of 1.4 years. * 1 Introduction
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