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Lockheed Martin Wants to Pull Electricity from the Ocean’s Heat

If all goes to plan, a new deal inked by two of the world’s biggest companies could give rise to a sustainability advocate’s paradise: a resort near the South China Sea that gets all of its power from the heat of the water nearby through a new type of renewable energy.

The deal, says a news release issued by Lockheed Martin, will see the defense giant partner with the Reignwood Group—a massive company that does everything from selling Red Bull in China to operate hotels and golf courses, managing properties and operating a private aircraft service—to develop the first commercial plant for a new type of renewable energy generation system known as ocean thermal energy conversion (OTEC).

Ocean thermal energy conversion draws on the natural temperature gradient that forms in tropical oceans worldwide. The surface of the ocean, heated by the Sun, is much warmer than the water deeper down. OTEC plants use the warm surface water to boil a liquid with a really low boiling point in a low-pressure container to form steam. This steam then drives a turbine, generating electricity. Colder water from deeper down is pulled up in a pipe, and by having this cold water pass by the pipe containing the steam, the steam is condensed back into a liquid. The liquid flows around, is heated by the warm surface water, and turns into steam once more—on and on, generating electricity from the temperature gradient in the ocean.

The idea for ocean thermal energy conversaion has been around for a really, really long time. “The concept of deriving energy from ocean thermal gradients was a French idea, suggested in 1881 by Jacques d’Arsonval, and French engineers have been active in developing the requisite technology,” says Marine Energy Times.

According to energy reporter Tyler Hamilton, famed engineer Nikola Tesla even tried his hands at making it work.

While Lockheed has been working on this for four decades, one of the first in-depth discussions of the concept came from Nikola Tesla, who at the age of 75 outlined how such a plant might be built in the December 1931 issue of Everyday Science and Mechanics journal. Tesla spent considerable time devising a way to improve the efficiencies of such a power plant, but he determined that it was too great an engineering challenge at the time. “I have studied this plan of power production from all angles and have devised apparatus for bringing down all losses to what I might call the irreducible minimum and still I find the performance too small to enable successful competition with the present methods,” he wrote, though still expressing hope that new methods would eventually make it possible to economically tap the thermal energy in oceans.

So the idea is old, but recent technological developments have driven ocean thermal energy conversion into the realm of possibility. Interestingly, some of the most troubling issues facing OTEC were solved by the oil industry, says the Marine Energy Times:

Ocean thermal is the only remaining vast, untapped source of renewable energy, and is now ripe for commercialization.  The near market-readiness of this technology is largely attributable to the remarkable ocean-engineering innovations and successful experience of the offshore oil industry during the past thirty years in developing, investing in, and  introducing mammoth floating platforms.  That achievement has inadvertently satisfied ocean thermal’s key operational requirement, for a large, stable, reliable ocean platform capable of operating in storms, hurricanes and typhoons.

Consequently, adaptations of those offshore-ocean-platform designs can be spun-off  to supply the proven ocean-engineering framework on which to mount the specialized ocean thermal plant and plantship heat exchangers, turbomachinery, cold water pipe (CWP) system, and other components and subsystems.Those offshore engineering achievements have greatly reduced the real and perceived risks of investing in ocean thermal plants.

Lockheed Martin has been working on the technology behind OTEC, too, and the deal with the Reignwood Group will see them build a test plant. If they manage to pull it off, the work could open the door to increased investment in this new form of renewable energy.

According to Green Tech Media, there are some potential environmental issues to look out for: if the cold water brought up from depth is pumped out into the surface waters, you could trigger a huge algae bloom that is really bad for the local ecosystem. But, if you release the cold water further down, around 70 meters depth, you should be able to avoid this dilemma. Having a small-scale test plant will give researchers a way to learn about any other unforeseen issues before moves are made to implement this new type of renewable energy on a larger scale.

More from Smithsonian.com:

Clean Energy Can Come From Dirt
Catching a Wave, Powering an Electrical Grid?

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Lockheed Martin Wants to Pull Electricity from the Ocean’s Heat

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A Photographer’s Focus Shifts from Suffering to Serenity

A photographer whose career has focused on suffering turns to serenity. Link: A Photographer’s Focus Shifts from Suffering to Serenity Related ArticlesAn Earth Day Thought: Litter MattersArctic Nations Seek Common Management of Fishing as Open Water SpreadsBasketball Giant Keeps Pressing China on Rhinos and Ivory

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Chinese forests now just chopstick factories in waiting

Chinese forests now just chopstick factories in waiting

China’s been dealing with a lot of pressure lately: dirty aira river full of dead pigs, new pledges to go green … To cope, there’s apparently been an uptick in stress-eating. The country is now producing 80 billion pairs of disposable wooden chopsticks a year, nearly 60 pairs for each person in the country, according to Bai Guangxin, chair of Jilin Forestry Industry Group. That’s way up from the estimated 57 billion pairs produced annually between 2004 and 2009. At this rate, China is destroying nearly 1.5 percent of its forests each year just in the name of chopsticks.

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From The Huffington Post:

The consequences of China’s chopstick production — deforestation, for one — have prompted action from some environmental groups. …

Bai pointed out during [a] meeting Friday that the Chinese government has also begun taking action by introducing policies limiting manufacturing of disposable chopsticks.

Government actions range from a 5-percent tax levied in 2006 on disposable chopsticks, to a 2010 warning of potential government regulations for companies that fail to strictly supervise disposable chopstick production. …

“We should change our consumption habits and encourage people to carry their own tableware,” Bai recommended on Friday.

If the country’s still planning on increasing its forest cover by nearly 21 percent by 2020, it should heed Bai’s advice. (You’d think as the head of a timber company he might be able to do something about this himself, but there’s the whole state-run thing to contend with.)

Maybe a little DIY could help. My brother, a sushi fanatic, carries his own steel travel chopsticks in a pouch around his neck. Similar sticks with a travel case cost a few bucks at your local Asian market. Bonus: no figurative or literal splinters in your mouth from unethical eating instruments.

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Pollution spurs more Chinese protests than any other issue

Pollution spurs more Chinese protests than any other issue

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/ Hung Chung ChihThe Chinese are fed up with pollution.

The people of China are pissed. On the long list of injustices they endure, from internet censorship to having their homelands flooded by reservoirs, nothing is inspiring more uprisings than the abuse of their environment.

Retired Communist Party official Chen Jiping said that there were as many as 50,000 riots and protests in the country last year, and that pollution has replaced land disputes as the main cause of unrest. From Bloomberg:

“The major reason for mass incidents is the environment, and everyone cares about it now,” Chen told reporters at a meeting of the Chinese People’s Political and Consultative Conference, where he’s a member. “If you want to build a plant, and if the plant may cause cancer, how can people remain calm?”

Fear of revolt could be helping to fuel a slew of green initiatives announced recently by leaders in Beijing. But the ruling Community Party, which is in the midst of a leadership transition, also wants to quash rebellion.

From The Age newspaper last month:

China has sentenced 16 people to up to a year-and-a-half in prison for involvement in an environmental protest last July when a crowd of thousands ransacked government offices, the official Xinhua news agency reported.

A court in Qidong city, 65 km (40 miles) north of Shanghai, charged the group of demonstrators with “gathering to assault state organs, damaging property and theft” during the July 28 demonstration against a pipeline for waste from a paper factory.

The protest exemplified a growing environmental awareness and willingness of urban people to voice concern about industrial pollution. At the same time, the ruling Communist Party worries that protests can undermine social order.

Power to the Chinese people, y’all.

John Upton is a science aficionado and green news junkie who

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Big Social Costs Tallied in Regions With Scant Energy Access

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Big Social Costs Tallied in Regions With Scant Energy Access

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A Communications Scholar Analyzes Bill McKibben’s Path on Climate

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How Climate Change Worsened Violence in Syria

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International security experts explain how low rainfall can evolve into violent conflict. Epic drought in Syria’s farmland, shown here, may have inflamed civil unrest. CharlesFred/Flickr In October 2010, just months before a Tunisian street vendor self-immolated and sparked what would become the Arab Spring, a prolonged drought was turning Syria’s verdant farmland into dust. By last month, more than 70,000 Syrians, mostly civilians, had been killed in the brutal and ongoing conflict between President Bashar al-Assad’s dictatorial regime and a coalition of opposition forces; just today, the UN announced that over one million refugees the country in the last two years. International security experts are now looking at the connection between recent droughts in the Middle East and the protests, revolutions, and deaths that followed, and building a body of evidence to suggest that climate change played a key role in Syria’s violence and the Arab Spring generally. The possibility that climate change could affect security is nothing new: The US Department of Defense has proven to be surprisingly progressive on planning for global warming. But Caitlin Werrell and Francesco Femia, co-founders of the Washington-based Center for Climate and Security, argue that if you want to see the connection between climate and conflict in action today, look no further than Syria. The pair contributed to a series of essays released last week by the Center for American Progress, all arguing that the Arab Spring is a textbook example of the link between climate change and social instability. Climate Desk called them up to discuss how lack of rainfall leads into violent uprising, and how the international community can prepare for the future of extreme weather. Climate Desk: How does climate change play into civil unrest? Where does it rank compared to other violence-causing factors? Caitlin Werrell: We use the term “threat multiplier” or “accelerant of instability,” in the sense that climate change can exacerbate other threats to national or international security. The way it does that is often through water: You have an increased prevalence of drought or floods or changing rainfall patterns, and what this does is it changes your ability to grow food, it has impacts on food security, it influences your ability to produce energy, it influences your infrastructure. Francesco Femia: We wouldn’t actually rank climate change amongst other factors; we would say that climate change is one of those almost special factors that exacerbates other drivers of unrest and/or conflict. It just makes other drivers of unrest worse. CD: What has happened in the case of Syria, specifically? FF: In Syria, prior to the unrest that eventually exploded into revolution and armed conflict, Syria had experienced an unprecedented drought, lasting about five years. In 2011, NOAA produced a report showing that the Mediterranean littoral and the Middle East had significant drought conditions that were directly related to climate change. And then we found some reporting that had been done over the course of the drought which were showing that in Syria the drought, connected with natural resource mismanagement by the Assad regime, had led to a mass exodus, rural-to-urban migration, as farmers lost their livelihood. The UN estimated that about 800,000 people in Syria during the course of the drought had their livelihoods entirely destroyed. In the run-up to the unrest in Syria, a lot of international security analysts, even on the eve of the exploding unrest, had determined that Syria was generally a stable country, and that it was immune to social unrest and immune to the Arab Spring. It was clear that there were some stresses underneath the surface, and those migrations that we’re talking about, internal migrations, also put pressure on urban areas that were already economically stressed, and that was added on top of refugees that had been coming in from Iraq since the US invasion. CD: Generally speaking, how well is the connection between climate change and civil unrest understood, by international aid organizations, by governments? Where is there opportunity or need for understanding it better? FF: In the past water scarcity has not necessarily led to conflict. Historically, it has sometimes led to cooperation, as conflicting parties come together to deal with their water resources. But we’re looking at an unprecedented picture in the future that we haven’t seen before. The historical record really doesn’t tell us too much about what to expect for the next 20 or 30 years, just given that we’re talking about an unprecedented climate situation and an unprecedented water situation. The international community is still piecing together how climate change is linked to these particular weather events, whether it’s drought or floods, and then how is that related to conflict. CW: Part of it is that [climate change] is one of many stressors. A lot of conflict, it’s a very complex process, there’s not direct causality between one aspect and another. But as we continue to see instances like Syria, like Egypt, that were indirectly impacted by droughts in Russia and China, these are the type of connections we will see more and more of in the future. And so the understanding we have now is a good foundation for developing more resilient practices, both mitigation and adaptation to the risks of climate change. CD: How well is this connection understood by average Syrians? Do they see the link between the conflict of which they’re a part, and climate change? FF: Generally speaking, we would say that populations are not very well educated about the links between climate change and specific weather events, and there’s a need for more education. And by generally, I mean globally. What is certainly clear is that there’s an understanding from Syrians about how this drought has impacted their own livelihoods, given that so many of them have had to pick up and move. And so, this is unprecedented within their own lifetimes, and unprecedented within the history of the region. In the Middle East and North Africa, these countries have been dealing with drought for a long time. Many of them are arid states, and they’ve had to deal with that. And so naturally there is an openness to making those connections between what is essentially increasing aridity in the region and why that’s happening, and that’s the connection to climate change. And so certainly the leadership in these regions, especially those who deal with water and energy, are very acutely aware of these things. CW: In other work we’ve done in Mali, drought is not something new, and people for thousands of years have been dealing with how do you survive in very arid regions. What is new is the rate of change, how long these droughts are lasting, the intensity of the drought. So to some degree, people in these regions are best-equipped to deal with water scarcity, but a lot of times these changes are very different from the floods and droughts of yesterday. CD: Given the likelihood that we’ll encounter more droughts like this in the future, what can be done to ensure that each one isn’t followed by some kind of violence or unrest? FF: There are certain things that governments and the international community will never be able to control. There are so many factors that feed into civil unrest and conflict, particularly armed conflict, that have to do with historical grievances, economics, democratic practice, etc., that there’s certainly no silver bullet on climate resilience, that’s going to prevent conflict. In other words, doing something about climate change is not going to bring world peace, in and of itself. However, it is very important that governments and the international community recognize that we can do something about mitigating climate change and also adapting to the risks. Governments can climate-proof their infrastructure: We’re talking about better water practices, better irrigation techniques. It also means climate-proofing institutions we normally don’t think of as associated with climate change, such as health infrastructure. If diseases are going to spread differently because of climate change, then governments should be prepared for that. In the Arab World right now, governments that are going through transition, whether it’s Libya, or Egypt, or Syria, that’s still in the midst of an armed conflict, in rebuilding post-conflict, and there really is an opportunity to get this right.

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China keeps making new green pledges

China keeps making new green pledges

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Shanghai, along with the rest of China, might soon be getting a little cleaner.

The West has long turned a collective blind eye to China’s human rights abuses, its disregard for democracy, its complicity in the mistreatment of its low-wage workers, its occupation of Tibet, and its environmental sins. By turning that blind eye, we’ve ensured a cheap and steady flow of everything from McDonald’s Happy Meal toys to iPhones and other toxic consumer goods.

But something remarkable has been happening of late: China’s despotic leaders seem to be working to clean up the country’s environmental practices.

In February, the leaders announced they would introduce a carbon tax and new pollution discharge fees.

Also last month, China finally came clean and admitted to the existence of so-called cancer villages. “The toxic chemicals [used in China but banned elsewhere] have caused many environmental emergencies linked to water and air pollution,” the country’s environment ministry acknowledged in a landmark report.

And now, Bloomberg is reporting that China has issued environmental protection guidelines for companies to follow when they make foreign investments. Chinese companies operating abroad are being directed to curb pollution and consider their impacts on local communities. From the article:

The guidelines call on companies to follow local environmental laws, assess the environmental risks of their projects, minimize the impact on local heritage and draft plans for handling emergencies.

“We want our companies to realize that they must look after environmental issues in domestic and overseas investments,” Bie Tao, a policy department official from the Chinese environment ministry, said at the briefing. “No side will win if the environment is neglected, and we have many lessons in this regard.”

Zambia last week revoked the license of a Chinese-owned coal mine in the south of the country after violations of safety and environmental laws. In Myanmar, construction of a $3.6 billion hydropower plant by a venture between China Power Investment Corp., Myanmar’s Ministry of Electric Power-1 and a local private company was halted after the project drew the criticism of environmentalists and local residents protested.

And there’s more. From a separate Bloomberg article regarding the country’s latest effort to curb its killer air pollution:

China’s largest oil companies have announced plans for billions of yuan of upgrades after air pollution in the Chinese capital hit hazardous levels on 20 days in January. China Petrochemical Corp. Chairman Fu Chengyu said in an interview with state broadcaster China Central Television last month that the nation’s biggest refiner would spend about 30 billion yuan [$4.8 billion] a year to upgrade its plants to produce cleaner fuel.

So far, this is all mostly talk. But if China carries through with these and other pledges, it may soon have fewer environmental sins that we would need to overlook. That should make it even easier for us to turn a collective blind eye to its human rights abuses, its disregard for democracy, its complicity in the mistreatment of its low-wage workers, and its occupation of Tibet.

John Upton is a science aficionado and green news junkie who

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, posts articles to

Facebook

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blogs about ecology

. He welcomes reader questions, tips, and incoherent rants:

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#6: Good Ideas EZCJR-BLK 7-Cubic-Foot Compost Wizard Jr.

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#3: Gardman R687 4-Tier Mini Greenhouse

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