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Colin Bennett

Wind Leading the Pack of Winning Clean Tech Technologies - 0 views

www.cleantechblog.com/...ack-of-winning-clean-tech.html

wind

shared by Colin Bennett on 02 Oct 08 - No Cached
  • Colin Bennett on 02 Oct 08
     
    Wind comes out the clear winner. Concentrated solar power, geothermal, solar photovoltaics, tidal, wave, are good additions to the mix. Hydroelectric is added for its load balancing ability. Nuclear and coal are less beneficial. Corn and cellulosic ethanol should not be included in policy options. Hopefully, the next administration will be wise enough to follow Pr. Jakobson's recommendation . . . and align its subsidies with the right kind of technologies.
Hans De Keulenaer

New World Record Set For Solar Efficiency: 31.25% : MetaEfficient - 0 views

www.metaefficient.com/...for-solar-efficiency-3125.html

concentrated solar power efficiency usa world records

shared by Hans De Keulenaer on 14 Feb 08 - Cached
  • On a perfect New Mexico winter day — with the sky almost 10 percent brighter than usual — Sandia National Laboratories and Stirling Energy Systems (SES) set a new solar-to-grid system conversion efficiency record by achieving a 31.25 percent net efficiency rate. The old 1984 record of 29.4 percent was toppled Jan. 31 on SES’s “Serial #3” solar dish Stirling system at Sandia’s National Solar Thermal Test Facility.
  • Hans De Keulenaer on 15 Feb 08
     
    Could a potential good case for developing an eco-sheet, provided we can get the bill of materials. For consideration by Sergio / Fernando.
Colin Bennett

Sunrgi Exits Stealth, Promises to be as Cheap as Coal | EcoGeek - 0 views

www.ecogeek.org/1596

costs photovoltaics

shared by Colin Bennett on 01 May 08 - Cached
  • Colin Bennett on 01 May 08
     
    Basically they use a magnifying glass to concentrate the power of the sun 1600 times onto a tiny square of the most efficient photovoltaic material on the planet.
Hans De Keulenaer

The Oil Drum: Europe | Solar Islands: A new concept for low-cost solar energy at very l... - 0 views

europe.theoildrum.com/4002

concentrated solar power photovoltaics renewables costs

shared by Hans De Keulenaer on 21 May 08 - Cached
  • The need for large scale renewable energy sources is underlined by the global warming due to increasing CO2 levels. CO2 is an unavoidable by-product of the energy generation process using any kind of fossil fuel.
Colin Bennett

Storing Solar Power In Molten Salt : MetaEfficient - 0 views

www.metaefficient.com/...olar-power-in-molten-salt.html

concentrated solar electricity storage

shared by Colin Bennett on 07 Jan 08 - Cached
  • Solar power is a truly efficient source of energy, but it tends to fluctuate, and, as you might know, it turns off at night. One clever way to alleviate this intermittence is to store solar energy in the form of heat using molten salt. An aerospace company, Hamilton Sundstra, has created a venture called SolarReserve, and it plans to have its first molten salt solar power plant online by 2010.
Sergio Ferreira

After Gutenberg » Blog Archive » BrightSource Energy - 0 views

jcwinnie.biz/wordpress

storage weather

shared by Sergio Ferreira on 13 Sep 07 - Cached
  • A molten salt system1 is a means to store thermal energy, thus mitigating the problem of an intermittent source for generating electricity at night or during cloudy weather. It is one of Tom Konrad2’s top ten favorites for an alternative energy future because it’s cheaper to store heat than it is to store electricity and concentrating solar power can produce a ton of heat without pollution or fuel.
davidchapman

Photos: More solar power bang for the buck | CNET News.com - 0 views

news.com.com/2300-11392_3-6199938-1.html

efficiency concentrated solar

shared by davidchapman on 02 Aug 07 - Cached
  • davidchapman on 02 Aug 07
     
    SolFocus, a company spun off from Xerox's Palo Alto Research Park, is building arrays of solar panels around this honeycomb design. Each dish magnifies the light 500 times and focuses it on very high-efficiency cells.
davidchapman

Nobel laureate: Wind is not the future | Green Tech - CNET News - 0 views

news.cnet.com/8301-11128_3-10254009-54.html

wind concentrated solar africa europe 2050

shared by davidchapman on 10 Jun 09 - Cached
  • davidchapman on 10 Jun 09
     
    Wind power is not the answer Steinberger now wants funding for a big pilot project. The idea is to link solar thermal power from Northern Africa to Europe via high-voltage undersea cables. The proposed 3- to 3.5-gigawatt power plant would cost an estimated $32 billion to build. Steinberger believes that 80 percent of Europe's energy needs could be met by solar thermal power plants in the Sahara by 2050.
Colin Bennett

How to Make 25% of World's Electricity from Solar Energy by 2050 - 0 views

cleantechnica.com/...city-from-solar-energy-by-2050

photovoltaics 2050 electricity

shared by Colin Bennett on 14 May 10 - Cached
  • The International Energy Agency (IEA) presented two new solar energy analyses in Valencia, Spain this week, a Solar Photovoltaic Energy Technology Roadmap and a Concentrating Solar Power Technology Roadmap. The key finding from these is that 20-25% of global electricity production could be from solar energy by 2050.
Hans De Keulenaer

Photovoltaïque : un panneau au rendement record de 41,6% - Matériaux - Le Mon... - 1 views

www.lemoniteur.fr/...au-au-rendement-record-de-41-6

renewables photovoltaics world.records

shared by Hans De Keulenaer on 06 Apr 10 - No Cached
  • Hans De Keulenaer on 06 Apr 10
     
    "Boeing et Stirling Energy Systems (SES) ont formé un partenariat stratégique afin de commercialiser le panneau photovoltaïque à haute concentration de l'avionneur. XR700, c'est son nom, concentrerait les rayons du soleil d'un facteur 700 et présenterait un rendement record de 41,6%. A titre de comparaison, les panneaux commercialisés aujourd'hui ne dépassent pas des rendements supérieurs à 20%."
Colin Bennett

New technologies may grab carbon right out of air - 1 views

www.reuters.com/...idUSN01290245

carbon CCS_CCU

shared by Colin Bennett on 02 Oct 09 - Cached
  • * New approach seen to combat climate-warming carbon * Strategy would reduce atmospheric carbon concentration * Companies investigating "air capture" method
Hans De Keulenaer

Low-cost Solar Thermal Plants at Heart of Algerian-German Research Push - 0 views

www.renewableenergyworld.com/...story

concentrated solar costs electricity germany large-scale tutorial

shared by Hans De Keulenaer on 21 Mar 08 - Cached
  • Electricity from solar thermal plants could cost as little as €0.04/kilowatt hour (kWh) [US $0.06/kWh] by 2015 to 2020, Bernhard Milow from the German Aerospace Center (DLR) said. And using solar thermal power to desalinate seawater could cost the same.
Arabica Robusta

ZCommunications | The Search for BP's Oil by Naomi Klein | ZNet Article - 1 views

www.zcommunications.org/rch-for-bps-oil-by-naomi-klein

oil industry usa pollution

shared by Arabica Robusta on 22 Jan 11 - No Cached
  • Normally these academics would be fine without our fascination. They weren't looking for glory when they decided to study organisms most people either can't see or wish they hadn't. But when the Deepwater Horizon exploded in April 2010, our collective bias toward cute big creatures started to matter a great deal. That's because the instant the spill-cam was switched off and it became clear that there would be no immediate mass die-offs among dolphins and pelicans, at least not on the scale of theExxon Valdez spill deaths, most of us were pretty much on to the next telegenic disaster. (Chilean miners down a hole—and they've got video diaries? Tell us more!)
  • Mike Utsler, BP's Unified Area Commander, summed up its findings like this: "The beaches are safe, the water is safe, and the seafood is safe." Never mind that just four days earlier, more than 8,000 pounds of tar balls were collected on Florida's beaches—and that was an average day. Or that gulf residents and cleanup workers continue to report serious health problems that many scientists believe are linked to dispersant and crude oil exposure.
  • For the scientists aboard the WeatherBird II, the recasting of the Deepwater Horizon spill as a good-news story about a disaster averted has not been easy to watch. Over the past seven months, they, along with a small group of similarly focused oceanographers from other universities, have logged dozens of weeks at sea in cramped research vessels, carefully measuring and monitoring the spill's impact on the delicate and little-understood ecology of the deep ocean. And these veteran scientists have seen things that they describe as unprecedented. Among their most striking findings are graveyards of recently deceased coral, oiled crab larvae, evidence of bizarre sickness in the phytoplankton and bacterial communities, and a mysterious brown liquid coating large swaths of the ocean floor, snuffing out life underneath.
  • ...3 more annotations...
  • All this uncertainty will work in BP's favor if the worst-case scenarios eventually do materialize. Indeed, concerns about a future collapse may go some way toward explaining why BP (with the help of Kenneth Feinberg's Gulf Coast Claims Facility) has been in a mad rush to settle out of court with fishermen, offering much-needed cash now in exchange for giving up the right to sue later. If a significant species of fish like bluefin does crash three or even ten years from now (bluefin live for fifteen to twenty years), the people who took these deals will have no legal recourse.
  • A week after Hollander returned from the cruise, Unified Area Command came out with its good news report on the state of the spill. Of thousands of water samples taken since August, the report stated, less than 1 percent met EPA definitions of toxicity. It also claimed that the deepwater sediment is largely free from BP's oil, except within about two miles of the wellhead. That certainly came as news to Hollander, who at that time was running tests of oiled sediment collected thirty nautical miles from the wellhead, in an area largely overlooked by the government scientists. Also, the government scientists measured only absolute concentrations of oil and dispersants in the water and sediment before declaring them healthy. The kinds of tests John Paul conducted on the toxicity of that water to microorganisms are simply absent.
  • Coast Guard Rear Adm. Paul Zukunft, whose name is on the cover of the report, told me of the omission, "That really is a limitation under the Clean Water Act and my authorities as the federal on-scene coordinator." When it comes to oil, "it's my job to remove it"—not to assess its impact on the broader ecosystem. He pointed me to the NOAA-led National Resource Damage Assessment (NRDA) process, which is gathering much more sensitive scientific data to help it put a dollar amount on the overall impact of the spill and seek damages from BP and other responsible parties.
  • Arabica Robusta on 22 Jan 11
     
    Normally these academics would be fine without our fascination. They weren't looking for glory when they decided to study organisms most people either can't see or wish they hadn't. But when the Deepwater Horizon exploded in April 2010, our collective bias toward cute big creatures started to matter a great deal. That's because the instant the spill-cam was switched off and it became clear that there would be no immediate mass die-offs among dolphins and pelicans, at least not on the scale of theExxon Valdez spill deaths, most of us were pretty much on to the next telegenic disaster. (Chilean miners down a hole-and they've got video diaries? Tell us more!)
Colin Bennett

FT.com / Home UK / UK - Gathering light to make energy - 0 views

www.ft.com/...df-11dd-ba7c-000077b07658.html

mit photovoltaics

shared by Colin Bennett on 11 Jul 08 - Cached
  • Colin Bennett on 11 Jul 08
     
    Engineers at the Massachusetts Institute of Technology have invented a simple "solar concentrator" that gathers sunlight over a large area and channels the energy to photovoltaic cells at the edges.
Colin Bennett

The Energy Blog: Big Business Says Addressing Climate Change 'Rates Very Low on Agenda' - 0 views

thefraserdomain.typepad.com/...big-business-sa.html

climate corporate germany

shared by Colin Bennett on 30 Jan 08 - Cached
  • Nearly nine in 10 of them do not rate it as a priority, says the study, which canvassed more than 500 big businesses in Britain, the US, Germany, Japan, India and China. Nearly twice as many see climate change as imposing costs on their business as those who believe it presents an opportunity to make money. And the report's publishers believe that big business will concentrate even less on climate change as the world economy deteriorates. . . . more
  • Hans De Keulenaer on 31 Jan 08
     
    Climate is a global and an outcome measure. No wonder 'business does not care', or better - gives it only lip service. But as for the multi-B$ carbon markets, that's a different story. The term 'shark pit' comes to mind.
Ako Z°om

Top 7 alternative energies listed - environment - 14 January 2009 - New Scientist - 0 views

www.newscientist.com/...ternative-energies-listed.html

wind geothermal tidal renewables wave hydropower

shared by Ako Z°om on 08 Feb 09 - Cached
  • Watch a video of Jacobson discussing his findings. The energy sources that Jacobson found most promising were, in descending order: • Wind • Concentrated solar power (mirrors heating a tower of water) • Geothermal energy • Tidal energy • Solar panels • Wave energy • Hydroelectric dams
  • Ako Z°om on 08 Feb 09
     
    finding the good sustainable energy is not so easy ... but the right way are for start to become continous choices ...
  • Ako Z°om on 08 Feb 09
     
    what are the good next soltutions for sustainable energies ? .. infacts...
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