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Hans De Keulenaer

Appliance Efficiency and Long-Run Energy Demand | Precourt Energy Efficiency Center (PE... - 1 views

  • This project will examine how people make decisions about appliance purchases and the effect that these choices have on energy demand. Currently, approximately half of U.S. greenhouse gas emissions are attributable to residential appliance use. However, consumers can reduce their long-run energy needs by replacing old appliances with ones that are more energy efficient. It is not surprising, then, that efficiency standards have been the cornerstone of U.S. energy conservation efforts to date. Unfortunately, the effect of these standards on appliance purchase behavior is not well understood. There are two primary reasons why. Current datasets lack crucial information, and even with appropriate data it is difficult to accurately model the dynamic aspect of appliance purchase behavior. This project addresses both of these issues.
Hans De Keulenaer

Study finds that linked wind farms can result in reliable power - 0 views

  • Wind power, long considered to be as fickle as wind itself, can be groomed to become a steady, dependable source of electricity and delivered at a lower cost than at present, according to scientists at Stanford University. The key is connecting wind farms throughout a given geographic area with transmission lines, thus combining the electric outputs of the farms into one powerful energy source. The findings are published in the November issue of the American Meteorological Society's Journal of Applied Meteorology and Climatology.
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

Battery Could Provide a Cheap Way to Store Solar Power | THE GREEN ENERGY BLOG - 0 views

  • There’s a promising new entry in the race to build cheap batteries for storing energy from solar panels and wind turbines. Stanford researchers led by Yi Cui, a professor of materials science and engineering, have demonstrated a partially liquid battery made of inexpensive lithium and sulfur. Cui says the battery will be easy to make and will last for thousands of charging cycles. Cui believes that the material and manufacturing costs of the battery might be low enough to meet the Department of Energy’s goal of $100 per kilowatt-hour of storage capacity, which the DOE estimates will make the technology economically attractive to utilities. Existing batteries can cost hundreds of dollars per kilowatt-hour of capacity, although several companies are working to commercialize cheaper ones (see “Ambri’s Better Battery” and “Battery to Take On Diesel and Natural Gas”).
Colin Bennett

The House That Twitters Its Energy Use « Earth2Tech - 0 views

    Can Twitter help you turn your lights off? IBM's "Master Inventor" Andy Stanford-Clark has rigged up his home to twitter its energy use, and if you follow the tweets you can see in real time when Stanford-Clark has turned his lights and fountain off or on and whether he has an "unusually high electricity use" or has reduced power consumption.
Colin Bennett

The Energy Blog: Wind Power as a Baseload for Electric Power - 0 views

  • A study conducted by Stanford University confirmed that interconnected multiple wind farms can be used to provide baseload electric power. Interconnecting wind farms with a transmission grid reduces the power swings caused by wind variability and makes a significant portion of it just as consistent a power source as a coal power plant. "This study implies that, if interconnected wind is used on a large scale, a third or more of its energy can be used for reliable electric power, and the remaining intermittent portion can be used for transportation, allowing wind to solve energy, climate and air pollution problems simultaneously," said Archer, the study's lead author and a consulting assistant professor in Stanford's Department of Civil and Environmental Engineering.
Colin Bennett

40-Hour Laptop Batteries - Stanford Silicon Nanowires - 0 views

  • By using silicon nanowires as the anode, in rechargeable lithium ion batteries, instead of graphite the amount of lithium the anode can hold is extended tenfold and thus the battery’s life.
Colin Bennett

Bioelectricity vs biofuels: which is most efficient? | Energy Efficiency News - 0 views

    According to researchers from the Carnegie Institution, the University of California, Merced and Stanford University, converting biomass to electricity delivers 80% more miles per acre of crops and doubles the potential for greenhouse gas offsets.
Hans De Keulenaer

elektrozine : Papieren batterijen niet langer een illusie (video) - 0 views

  • Wetenschappers van Stanford University denken een manier gevonden te hebben om papier te transformeren naar batterijen en supergeleiders.
Hans De Keulenaer

Natural Power and Rev1 Renewables join asset management forces in North America | Natur... - 3 views

    With 5 million wind turbines needed (Stanford paper), asset management of renewable plant can only be a rising trend.
Colin Bennett

Can technology persuade us to save energy? - 3 views

  • Last week New Scientist reported that US emissions could be cut by more than 7 per cent if people changed their ways at home. Separate studies in US, Dutch and British homes have reported that 26 to 36 per cent of domestic energy use is "behavioural" – determined by the way we use machines, not the efficiency of the hardware itself. This means that "machines designed to change humans", as the persuasive technology group of Stanford University, California, calls them, could save us huge amounts of energy and money. Energy awareness Many projects are trying to make that happen, with two main motivations. One is to understand which facets of human nature can be manipulated to change behaviour. The other is to develop technical strategies to do so.
Hans De Keulenaer

U.S. Secretary of Energy Steven Chu waves the banner for energy revolution - 0 views

  • U.S. Secretary of Energy Steven Chu, a Nobel laureate and professor emeritus of Physics at Stanford, returned to campus Monday to speak about the role of clean energy in combating global climate change. A sustainable energy revolution, he said, is not only vital in mitigating climate change, but is a critical step in ensuring U.S. economic competitiveness.
Arabica Robusta

Climate Change Messaging: Avoid the Truth » CounterPunch: Tells the Facts, Na... - 1 views

  • Ted Nordhaus and Michael Shellenberger published the op-ed “Global Warming Scare Tactics” in the New York Times on April 8. Participants in recent debates over climate change may recognize their names. They’re the guys who run the Breakthrough Institute, a pseudo-contrarian “environmental research organization.”
  • While occasionally on point in its charges against the big organizations, the essay (based on interviews with mostly white male leaders of large national groups) had nothing to say about the environmental justice movement, or other grassroots groups led by women and people of color. It neglected as well the environmental movements of the Global South, today the heart of the climate justice movement.
  • Is fear of disruption of what Habermas calls the life-world the sole inducer of civic action? Of course not: social movements also cohere around other shared, negotiated understandings, identities, diagnoses of problems, and assessments of opportunities. Might fear paralyze rather than mobilize? Yes: in cases when the perceived threat appears impervious to resistance, and when commitment to the cause flags over time. Fear-based campaigns require a tangible evil: a draft card, a nuclear plant cooling tower, a polluting facility’s smoke plume, an Operation Rescue picket line.
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  • Of the massive, coordinated, ongoing effort by Exxon-Mobil, the Koch brothers, and the Heartland Institute (et al.) to do to climate science what the Tobacco Institute did to cigarette science, Nordhaus and Shellenberger have only this to say, “Some conservatives and fossil-fuel interests questioned the link between carbon emissions and global warming.” There’s no mention of how under- and mis-educated TV weathermen have been central progenitors of climate change skepticism. There’s no acknowledgement of how Big Coal, Oil and Gas have bought off local and national legislators, stalled attempts to put forward even wimpy programs (like cap and trade), or underwritten NPR’s gushing embrace of fracking.
Hans De Keulenaer

Kyoto's Great Carbon Offset Swindle - 0 views

  • According to David Victor, a leading carbon trading analyst at Stanford University, as many as two-thirds of the supposed "emission reduction" credits being produced by the CDM from projects in developing countries are not backed by real reductions in pollution. Those pollution cuts that have been generated by the CDM, have often been achieved at a stunningly high cost: billions of dollars (or pounds) could have been saved by cutting the emissions through international funds, rather than through the CDM's supposedly efficient market mechanism.
Hans De Keulenaer

Could the Electric Grid Support Far More Wind and Solar? | Wired Science from - 0 views

  • The commonly accepted wisdom in the energy industry is that the grid could only draw something like 20 percent of its power from wind and solar resources before encountering major reliability problems. But the new power flow simulation (.pdf), presented for the first time this week at the American Geophysical Union meeting, shows that, at least in California, the power grid might be able to handle three times that much renewable energy without encountering major trouble pushing electrons around the state.
Hans De Keulenaer Exclusive - 0 views

  • July 21 (Bloomberg) -- Andy Grove, the former head of Intel Corp., asked students in his Stanford University business school seminar last year to determine whether an electric car market could thrive in the U.S. Their conclusion: It can't. That propelled the 1997 Time Man of the Year, now retired, on a personal crusade to reshape U.S. energy policy, take on the auto industry and attack America's leaders for risking the nation's security.
Colin Bennett

» Interconnecting wind farms | Emerging Technology Trends | - 0 views

  • Wind power is one the world’s fastest growing electric energy source, but as wind is intermittent, a single wind farm cannot deliver a steady amount of energy. This is why scientists at Stanford University want to connect wind farms to develop a cheaper and reliable power source. Interconnecting wind farms with a transmission grid should reduce the power swings caused by wind variability and provide a somewhat constant and reliable electric power (or ‘baseload’ power) provided by other power plants. The idea is attractive, but will the various companies involved with wind farms adopt it? Time will tell.
Energy Net

New analysis: California's grid can accommodate more renewables - 0 views

    This Wired article summarizes and links to a poster for the American Geophysical Union meetings (pdf) from Elaine Hart, a graduate student in civil and environmental engineering at Stanford. Her power flow simulation suggests that the existing transmission network in California can accommodate up to 70% of renewables in the portfolio on a hot summer day. The number of overloaded lines in the simulation rises from 11 to 31, which is not that large an increase given that there are almost 5,000 transmission lines in California. Still, this kind of work can be really useful to help target transmission investment. The Wired article also has some good links for further reading. I look forward to seeing more of this research!
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