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Gary Edwards

Next Generation Nuclear Power: Scientific American - 0 views

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    Six page article from 2003 provides an in depth discussion on existing and Future Nuclear Systems:  "In Response to the difficulties in achieving sustainability, a sufficiently high degree of safety and a competitive economic basis for nuclear power, the U.S. Department of Energy initiated the Generation IV program in 1999. Generation IV refers to the broad division of nuclear designs into four categories: early prototype reactors (Generation I), the large central station nuclear power plants of today (Generation II), the advanced lightwater reactors and other systems with inherent safety features that have been designed in recent years (Generation III), and the next-generation systems to be designed and built two decades from now (Generation IV) [see box on opposite page]. By 2000 international interest in the Generation IV project had resulted in a nine-country coalition that includes Argentina, Brazil, Canada, France, Japan, South Africa, South Korea, the U.K. and the U.S. Participating states are mapping out and collaborating on the research and development of future nuclear energy systems."
Gary Edwards

Teenager Designs Safer Nuclear Power Plants - Yahoo! News - 3 views

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    Very interesting presentation at the TED Conference.  Not quite a nuclear battery, but a really good redesign of nuclear power systems. excerpt: "Instead of finding a new way to boil water, Wilson's compact, molten salt reactor found a way to heat up gas. That is, really heat it up. Wilson's fission reactor operates at 600 to 700 degrees Celsius. And because the laws of thermodynamics say that high temperatures lead to high efficiencies, this reactor is 45 to 50 percent efficient. Traditional steam turbine systems are only 30 to 35 percent efficient because their reactors run at low temperatures of about 200 to 300 degrees Celsius. And Wilson's reactor isn't just hot, it's also powerful. Despite its small size, the reactor generates between 50 and 100 megawatts of electricity, which is enough to power anywhere from 25,000 to 100,000 homes, according to Wilson. Another innovative component of Wilson's take on nuclear fission is its source of fuel. The molten salt reactor runs off of "down-blended weapons pits." In other words, all the highly enriched uranium and weapons-grade plutonium collecting dust since the Cold War could be put to use for peaceful purposes. And unlike traditional nuclear power plants, Wilson's miniature power plants would be buried below ground, making them a boon for security advocates. According to Wilson, his reactor only needs to be refueled every 30 years, compared to the 18-month fuel cycle of most power plants. This means they can be sealed up underground for a long time, decreasing the risk of proliferation. Wilson's reactor is also less prone to proliferation because it doesn't operate at high pressure like today's pressurized-water reactors or use ceramic control rods, which release hydrogen when heated and lead to explosions during nuclear power plant accidents, like the one at Fukushima in 2011. In the event of an accident in one of Wilson's reactors, the fuel from the core would drain into a "sub-critical" setting- or tank-
Gary Edwards

Miniature Nuclear Plants Seek Approval to Work in U.S (Update1) - BusinessWeek - 2 views

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    Manufacturers of refrigerator-sized nuclear reactors will seek approval from U.S. authorities within a year to help supply the world's growing electricity demand. John Deal, chief executive officer of Hyperion Power Generation Inc., intends to apply for a license "within a year" for plants that would power a small factory or town too remote for traditional utility grid connections. The Santa Fe, New Mexico-based company and Japan's Toshiba Corp. are vying for a head start over reactor makers General Electric Co. and Areva SA in downsizing nuclear technology and aim to submit license applications in the next year to U.S. regulators. They're seeking to tap a market that has generated about $135 billion in pending orders for large nuclear plants.
Colin Bennett

Study says nuclear power isn't as "safe and clean" as Bush claims | Cleantech.com - 0 views

  • Nuclear energy doesn’t live up to its billing as the “emission-free panacea,” says a study from Pennsylvania’s Clarion University.
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    According to a study from Clarion University, Pennsylvania, USA each step in the current US process of building and running a nuclear plant, from mining the uranium ores to disposing of the wastes, contributes to greenhouse gas emissions. Indeed, the article states that for nuclear power to be a feasible alternative energy source the entire process would need to be more efficient. This study gives a view on nuclear power which includes long standing ideals. The paper seems to offer an intermediate review on issues around the subject of nuclear, in the wider energy debate.
Hans De Keulenaer

Is nuclear power essential to addressing climate change and energy independence? - NewTalk - 0 views

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    Calling climate change one of the greatest challenges ever faced by the human race, some former opponents of nuclear power have recently become its advocates, if cautious advocates. Our purpose here is not to debate climate change, but rather "Is nuclear power essential to addressing climate change and energy independence?"
Colin Bennett

The "Next Big Thing" in cleantech investing could be really… well, big. - 0 views

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    Two strong potential candidates for the Next Big Thing in cleantech venture capital are nuclear and carbon capture and storage. I've spoken with numerous VCs recently who are looking for innovative ways to play in nuclear power. Bets have already been made by VCs in small-scale nukes, hot fusion, and technologies related to big-scale nukes. The hope is to find a low-cost solution that is practically zero carbon emissions and also provides reliable "base load" power. So in other words, the hope is for a lower-carbon replacement for coal power. The challenges are also significant, however, not least of which being time to market for any new innovations, as this interesting article illustrates. With the recent news that the DOE will be putting $2.4B into carbon capture and storage, and its inclusion in emerging climate legislation, it's also clear that CCS will be leaned upon as a hoped-for way of making our existing coal-fired generation infrastructure less impactful on the atmosphere, while still preserving its value as low-cost baseload power. So in other words, the hope is for a lower-carbon "fix" for coal power.
Colin Bennett

Survey: Global support for nuclear power is growing - 0 views

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    A full 43 percent said nuclear energy provides a way to achieve a low-carbon future. The same percentage said they believed other renewable energy sources alone cannot fully replace fossil fuels. While 29 percent of those responding to the survey said they were more supportive of nuclear energy today than they were three years ago, 19 percent said they were less so.
Hans De Keulenaer

Energy, Electricity and Nuclear Power Estimates for the Period to 2030 « RFF ... - 0 views

  • The IAEA has revised upwards its nuclear power generation projections to 2030, while at the same time it reported that nuclear´s share of global electricity generation dropped another percentage point in 2007 to 14%. This compares to the nearly steady share of 16% to 17% that nuclear power maintained for almost two decades, from 1986 through 2005.
Hans De Keulenaer

Rising Sea Levels To Endanger Nuclear Future? - 0 views

  • One of the primary reasons for the building of more nuclear power plants today is to combat global warming and climate change, as nuclear power is relatively free of carbon emissions. However if this is to be used as a reason for building more plants, then this implies that the theory of global warming and its effects, such as sea levels rising are to be believed.
Gary Edwards

Space storm alert: 90 seconds from catastrophe - space - 23 March 2009 - New Scientist - 0 views

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    Interesting article from New Science describing how a "coronal mass ejection" from the Sun could melt down the electrical power gird. ".... Over the last few decades, western civilisations have busily sown the seeds of their own destruction. Our modern way of life, with its reliance on technology, has unwittingly exposed us to an extraordinary danger: plasma balls spewed from the surface of the sun could wipe out our power grids, with catastrophic consequences..." The article does offer a solution: upgrade the ACE solar satellite, to detect an electro magnetic surge and provide power grid operators with about 15 minutes to shut down their systems. The article does not discuss another possible option: stop building centralized power sources that demand increasingly massive power grids. Instead, concentrate on meeting energy needs using localized sources of power; like the highly portable Hyperion Power Module.
Colin Bennett

Nuclear, is it Renewable? - 0 views

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    Many see nuclear power as an optimal fossil to renewable transition energy.
Sergio Ferreira

EurActiv.com - EU not giving up on nuclear in quest for low-carbon future | EU - Europe... - 0 views

  • nuclear power (which represents around one-third of the EU's electricity production) is seen by the EU executive as "the largest source of largely carbon-free energy in Europe".  But member states are divided on how much nuclear should contribute - if at all - to the EU's future energy mix
Hans De Keulenaer

Economic viability of small to medium-sized reactors deployed in future European energy... - 2 views

  • Future plans for energy production in the European Union as well as other locations call for a high penetration of renewable technologies (20% by 2020, and higher after 2020). The remaining energy requirements will be met by fossil fuels and nuclear energy. Smaller, less-capital intensive nuclear reactors are emerging as an alternative to fossil fuel and large nuclear systems. Approximately 50 small (<300 MWe) to medium-sized (<700 MWe) reactors (SMRs) concepts are being pursued for use in electricity and cogeneration (combined heat and power) markets. However, many of the SMRs are at the early design stage and full data needed for economic analysis or market assessment is not yet available. Therefore, the purpose of this study is to develop “target cost” estimates for reactors deployed in a range of competitive market situations (electricity prices ranging from 45–150 €/MWh). Parametric analysis was used to develop a cost breakdown for reactors that can compete against future natural gas and coal (with/without carbon capture) and large nuclear systems. Sensitivity analysis was performed to understand the impacts on competitiveness from key cost variables. This study suggests that SMRs may effectively compete in future electricity markets if their capital costs are controlled, favorable financing is obtained, and reactor capacity factors match those of current light water reactors. This methodology can be extended to cogeneration markets supporting a range of process heat applications.
davidchapman

The Energy Blog: NRG to Build First Nuclear Plants in Thirty Years - 0 views

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    NRG Energy, Inc. and South Texas Project Nuclear Operating Company filed the first application for a Combined Construction and Operating License with the NRC in nearly 30 years. NRG proposes to build and operate two new nuclear units at the South Texas Project nuclear power station site. The total rated capacity of the new units will exceed 2,700 MW.
Hans De Keulenaer

Jim Rogers: US Leads in Nuclear Power Production - WSJ.com - 0 views

  • Investing in new nuclear power plants, which produce electricity 24 hours a day and seven days a week, can be a major growth engine for our economy. Nuclear plants can be located close to growing demand centers, and next to existing transmission lines. Renewables, which produce power intermittently, must often be sited far from cities and the grid.
Hans De Keulenaer

Nanomaterial turns radiation directly into electricity - energy-fuels - 27 March 2008 -... - 0 views

  • Electricity is usually made using nuclear power by heating steam to rotate turbines that generate electricity. But beginning in the 1960s, the US and Soviet Union used thermoelectric materials that convert heat into electricity to power spacecraft using nuclear fission or decaying radioactive material. The Pioneer missions were among those using the latter, "nuclear battery" approach.
Hans De Keulenaer

Can Efficiency Counter a Loss of Nuclear Power? - NYTimes.com - 0 views

  • That argument is particularly common in New York State and in Vermont, where state governments are trying to close nuclear reactors within their borders. So, how effectively can efficiency replace a reactor, making up for the loss of this zero-carbon energy source?
Peter Fleming

IEEE Spectrum: Q&A: Thorium Reactor Designer Ratan Kumar Sinha - 0 views

  • Given its limited reserves of natural uranium and its abundant supply of thorium, India has chalked out a unique three-stage nuclear program. In the first stage, pressurized heavy water reactors (PHWRs)—similar to those used in advanced industrial countries—burn natural uranium. In the second stage, fast-breeder reactors, which other countries have tried to commercialize without success, will burn plutonium derived from standard power reactors to stretch fuel efficiency. In the key third stage, on which India's long-term nuclear energy supply depends, power reactors will run on thorium and uranium-233 (an isotope that does not occur naturally).
    • Peter Fleming
       
      Friends of the earth do not view this a renewable energy. It is a thorny issue. Green activists will not accept it. However I am pragmatic and nuclear energy, if lead by a free flow of the western latest methods, is safe. It will do far less damage than a hydrocarbon generator to the environment. Meltdowns are a thing of the past in the west just like car engines used to blow up when they first came out.
Colin Bennett

100,000 mini power plants to substitute for 2 nuclear plants - 0 views

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    A collaboration in Germany is about to explore whether a sizable distributed generation project can supplant centralized power plants. For this project - called SchwarmStrom - 100,000 mini gas-fired generators will provide heat and power in German homes and businesses, with a combined output of 2000 MW!
Hans De Keulenaer

Environmental Capital - WSJ.com : Nuclear Option: It's Not Verboten Anymore - 0 views

  • A lot of politicians seem to love nuclear power—from John McCain to Angela Merkel and Silvio Berlusconi. But more importantly, public opinion everywhere is getting behind them.
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