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CLEAN ENERGY FUELS visualize her future to be a diversified conglomerate providing solution towards a Green Energy, a Green Environment, A Green Nation and a Green World
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Collaborating with Principal Researchers and Innovation Providers in introducing and realizing the proven Green Energy Technologies for the benefit of the Society and Mankind.

Progressively realizing these innovation with business owners whilst grooming skilled engineers and entrepreneurs to take up the business opportunities within the spectrum.

Create and educate Public Awareness about Green Energy Technology.

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Saturday, April 23, 2011

Hydrogen Safety

Hydrogen safety

Hydrogen safety
Hydrogen is a basic chemical element with tremendous potential as a source of energy. When oxidized, its only by-products are heat (thermal energy) and pure water.
At room temperature, hydrogen exists in a gaseous state. It is handled in a similar fashion to natural gas. And, since hydrogen has long been a component of the petroleum refining process, and is being used more and more frequently as a fuel, techniques for the safe handling and storage of hydrogen are well established.

Like other common gaseous fuels, such as natural gas, hydrogen is only combustible in the presence of oxygen. It cannot burn when contained by itself in a tank or a pipeline. Hydrogen also has certain properties that make it advantageous with respect to safety. For example, it is non-toxic - harmless to people and the environment. It is also the lightest element on earth, twice as light as helium. Thus, if released into the air, it disperses very quickly, reducing the potential for accumulation and unwanted or accidental combustion.

Tuesday, April 5, 2011

Reported Weyburn carbon capture project failure is bad news for the world




A Saskatchewan report that the world's first commercial carbon capture project 
is failing could be grave news for those involved in efforts to blunt humanity's 
contribution to climate change.It's a story with global implications, potentially 
bad ones, for the energy sector.A farm couple whose property sits over a 
Cenovus oilfield in Weyburn, Sask. which is supposed to be serving as 
the permanent storage site for more than 15 million tonnes of carbon dioxide - 
on Tuesday released a consultant's report which says the CO2 is leaking into 
their soil.The Weyburn project, which has received millions of dollars in 
government funding and is owned by Cenovus Energy, has been trumpted
for a decade as the international flagship for technology that would allow the 
continued use of fossil fuels including coal and natural gas without adverse 
environmental impacts.
According to Canadian Press reports on the web site of the Winnipeg Free Press,
the couple paid for the report themselves after the Saskatchewan government -
which derives an increasingly significant portion of its revenue from the oil and gas
industry - ignored their request  for an investigation.

A disturbing part of this story is that the couple have reportedly been complaining
about the situation - including carbonation in pond water and explosions on their
land - since 2006. Carbon dioxide and its equivalent gases, emitted during
industrial processes, have been identified by the international scientific community
as primary accelerators of climate change - including increased weather volatility,
ocean acidification, flooding and drought. Coal and gas fired electricity generation
plants, as well as gas and oil processing facilities, are among the world's largest producers of carbon dioxide.Finding a way to capture and store those CO2
emissions, rather than dump them into the atmosphere, is considered an essential
step in development of new fossil fuel-derived resources - such as coal-fired
electricity  for both the developing world as well as replacement of aging coal
generating plants in Canada, the United States, and elsewhere.Governments
around the world, along with multinational corporate partners in the  fossil fuel
industry, are spending billions of dollars to research and develop methods to
capture carbon dioxide emissions and storing the CO2 in deep underground
wells.
The carbon capture and storage project in Weyburn, Saskatchewan, has been
cited as a world-leading example of the technology since it commenced operation
in 2000, and really the only venue in the world that can offer more than a year or
 two's worth of evidence that carbon capture can succeed - or fail.

ps, in response to some reader comments, below, I'm adding this clip from story
I wrote last year about carbon capture and storage, or CCS:

"At Weyburn we have been operating at a commercial scale for over 10 years so
indeed there is commercial scale CCS, " Cenovus Energy executive vice-president
 for environment and strategic planning Judy Fairburn said at a Globe conference
panel discussion in Vancouver. Cenovus -- a subsidiary of EnCana -- has spent
more than $1 billion developing the facility, which is sequestering 2.2 million tonnes
of CO2 per year,  and is the subject of an International Energy Agency audit
because it is likely to serve as a global prototype. "To put the impact further into
perspective ... it is effectively similar to a 3,200-megawatt [capacity] wind farm or
2,000 [wind] turbines, or 152 million compact fluorescent light bulbs, or five
per cent of the compact fluorescent light bulb  market," Fairburn said.

Carbon Capture: Solution or Scam?

Carbon capture and storage (CCS) - a technology that would capture carbon emissions at centralized sources like coal plants and store them underground - has become a new fault line in the climate movement. On one hand, CCS is firmly opposed by a large segment of the youth movement, including Energy Action Coalition. A recent report by Greenpeace, "False Hope," concluded that "investment in CCS risks locking the world into an energy future that fails to save the climate."And in a recent letter to Congress, 43 nonprofits declared their opposition to public support for CCS:

"On behalf of our members and supporters we are writing to express our opposition to any policies that promote or provide taxpayer subsidies for carbon capture and storage... We strongly urge you to oppose any policies that provide mandates or taxpayer funded incentives for CCS."
On the other hand, a large number of climate expertsincluding the IPCC have concluded that CCS is a critical tool for achieving emissions reduction targets. A literature reviewby the Clean Air Task Force found supporting analysis for CCS by environmental groups including the World Wildlife Fund and Friends of the Earth. NRDC has also been a large proponent. Areport by the International Energy Agency (IEA) in 2007 concluded:
"Carbon dioxide capture and storage (CCS) is a critical technology to significantly reduce CO2 emissions. In a global CO2 emissions stabilisation scenario, CCS in power generation, industry and fuel transformation could account for 20% of CO2 savings... CCS along with other mitigation measures could significantly reduce the costs of stabilising greenhouse gas concentrations and increase the flexibility to achieve that goal."
What this argument isn't about: cost and urgency. Concerns about cost and urgency are not the cause for disagreement.Both camps recognize that CCS is an early-stage technology with significant costs for full-scale deployment, but this can be used as an argument both for and against supporting CCS.The primary concern raised by the Congressional letter opposing CCS was that CCS is too underdeveloped and expensive: "CCS cannot deliver in time. The best-case scenario is that the technology would be ready by 2030." The majority of groups promoting CCS agree, and as the IEA demonstrates, they see this as more reason to support its rapid development: "Accelerating investment in R&D and demonstration projects will be needed if CCS is to make a significant contribution."
What this argument is really about:
1. Energy Justice
Which is the greater injustice: entrenched global poverty and inequality, or mountaintop removal and its community impacts? How you answer this question may shape your opinion on CCS.
CCS raises important questions about justice. The environmental justice movement fervently opposes CCS because of the very real injustices of coal mining,mountaintop removal, and the associated impacts upon communities. Groups and communities battling the impacts of coal extraction are understandably skeptical, and often outright opposed, to any new technology that uses coal.
Mountain top removal
Coal mining can lay waste to ecosystems and communities. Here, the practice of mountain top removal coal mining has leveled this Appalachian mountain.
CCS is interpreted differently by those who focus on the injustices of global poverty and inequality. Jeffrey Sachs, for example, is a major supporter of CCS. This technology is seen as a potential way for developing countries to retain access to affordable electricity to lift their populations out of entrenched poverty. China, for example, has brought hundreds of millions of its citizens out of poverty with coal-powered development just in the last few decades.
China and the developing world's energy access per person is miniscule compared to the developed world. Is this just?
Hundreds of millions of Chinese peasants spend their lives in the field.
One of the greatest sources of passion and dedication among today's youth climate movement is its commitment to justice."Clean and just energy future" - this has become our vision and rallying cry. But what is a just energy future? Which injustices are we addressing? How do we get there, and which of the many injustices do we tackle first? If you believe that global poverty is as great (or greater) of an injustice as mountaintop removal, are you justified in supporting CCS?
2. Energy Reality
Will China and the developing world continue to build coal plants? Will developing countries agree to shut down their existing coal plants? Can the United States achieve deep carbon emissions reductions (80% by 2050 or greater) solely with renewables and efficiency? Your answers to these questions may determine your view on CCS as well.
Opponents and proponents of CCS disagree on the world's energy reality and the scale of our energy challenges.Opponents argue that affordable alternative energy technologies already exist and are close to becoming massively scalable. According to Greenpeace's report, "False Hope":
"The world already has the solutions to the climate crisis... Many nations have recognised the potential of these true climate solutions and are pressing ahead with ambitious plans for energy revolutions within their borders. New Zealand plans to achieve carbon neutrality by midcentury..."
Will China construct wind mills instead of coal plants? (Credit: Greenpeace)
Proponents of CCS are more skeptical, pointing out that a comparison of New Zealand to China, India, Brazil or other rapidly developing nations is a bit of a red herring. They point to projections that China and the developing world will construct an overwhelming number of new coal plants in the coming decades. The Energy Information Administration (EIA) projects that global coal consumption will double by 2030.China accounts for a staggering 61% of this increase. The EIA projects that China's total coal-related carbon emissions will grow by 232% between 2004 and 2030. Europe may also be following this trend - European countries were recently reported to be constructing 50 new coal plants.
A skeptical view of energy reality - or "realistic" as CCS proponents might say - may lead you to the conclusion that CCS is an imperfect but necessary technology. If developing countries continue to consume coal and construct new coal plants to build their economies and lift their populations out of poverty, CCS will be a critical technology to capture their emissions and avoid climate disaster. Coal mining and its impacts may be unacceptable, proponents would argue, but unless you can stop global coal development and shut down the world's existing plants, CCS investment and development is crucial.
The famous "wedge" approach by Socolow & Pacala proposed 15 wedges of global emissions reductions, three of which were achieved by CCS. Recent analysis incorporating new data on coal growth has shown that at least 18 wedges of reduction will be necessary. (Credit: SciAm 2006)
CCS plays a large role in emissions reduction scenarios (CCS reductions in red)
Indeed, from a global perspective, the scale of the energy challenge makes many skeptical that renewables and efficiency alone can power the economic development of nations home to billions of currently impoverished human beings.
But what about our situation in the United States? Do we need CCS here? What is its role in America's energy future as we strive to cut carbon emissions down to zero as quickly as possible? This question troubles youth activist, Breakthrough Generation Fellowship co-director and ItsGettingHotInHere editor, Jesse Jenkins. After working as a renewable energy advocate in the Pacific Northwest for the past two years and co-founding the Cascade Climate Network, Jesse wonders:
Regional projections right now show that even with renewable energy standards in place in three of four Northwest states (25% by 2025 in Oregon for example) and with some of the most aggressive energy efficiency programs in the nation, efficiency and renewables will only be enough to meet growing electricity demand over the next 20 years. To put it another way: ramping up renewables and efficiency as fast as our aggressive renewable energy and efficiency policies requires will only hold emissions steady at current levels. In order to cut emissions 15%, 30%, 80%, we'll need to do something to replace and close down existing coal-fired power plants serving the Pacific Northwest. The question then, is what will we replace them with?
Keeping LNG away means limiting the role of natural gas plants. Nukes are pretty much off the table in Oregon (banned in state by a statewide ballot measure!). We may be able to push renewables and efficiency farther, faster, but how far will it get us? What are we going to replace the Boardman coal plant with?...
We must grapple with these difficult questions as we consider the role of CCS technology both home and abroad and press onward toward a clean and just energy future.
3. Risk Assessment
Which is the greater risk: thousands of coal plants worldwide with no way to capture and store their emissions, or a potential for periodic carbon leakage from underground carbon storage sites? Once again, your assessment of risk may influence your position on CCS.
Opponents of CCS argue that the risk of carbon leakage is too great to allow its use. According to Greenpeace:
"Storing carbon underground is risky. Safe and permanent storage of CO2 cannot be guaranteed. Even very low leakage rates could undermine any climate mitigation efforts."
Their report also points to other public health and safety risks:
"Large-scale applications of CCS pose significant liability risks, including negative health effects and damage to ecosystems, groundwater contamination including pollution of drinking water, and increased greenhouse gas emissions resulting from leakage... CCS would not only worsen fuel security issues but intensify the major localised environmental problems..."
Proponents of CCS argue that the greater risk is a world with thousands of coal plants without a way to capture and store their emissions - a recipe for a complete collapse of our climate system. The best analysis, they argue, such as that performed by the IPCC, shows that geologic structures are capable of holding more carbon than total global emissions expected to be emitted throughout the entire the 21st century, at a 99 percent retention rate.
The dark gray areas represent "highly prospective sedimentary basins" for captured carbon deposits. Source: IPCC WGIII
Conclusion: You decide
Our collective decision on whether or not to make investments in CCS technology may have profound impacts on our generation and the future of the planet. The majority of the youth climate movement has been opposed to investments in CCS technology. Are you?