Applied Thermodynamics: Organic Rankine cycle – Wikipedia

See on Scoop.itGreen Energy Technologies & Development

Duane Tilden‘s insight:

We have all seen the Rankine Cycle engine, most typically as the inefficient steam locomotive.  The modern efficient designs use turbines to convert heat energy from two reservoirs of different temperatures to mechanical energy.

The Organic Rankine Cycle engine uses a fluid – vapor phase change other than water/steam and a wide range of compounds are available including proprietory mixtures.  These mixtures allow for the conversion to mechanical energy in a wide range of applications and temperatures.  Two such applications would be waste heat to energy and geothermal energy systems.

See on en.wikipedia.org

Hot Rocks: Canada Sits Atop Massive Geothermal Resource – Renewable Energy

See on Scoop.itGreen & Sustainable News

September 2011 Report by the Geological Survey of Canada suggests 100 projects could provide much of the country’s power needs…

Duane Tilden‘s insight:

“Canada’s in-place geothermal power exceeds one million times Canada’s current electrical consumption,” the report notes, though also stating most of that available power could not actually be produced. “Environmental impacts of geothermal development are relatively minor compared to other energy developments, however there are still key issues to be addressed….Geothermal installations have the potential to displace other more costly and environmentally damaging technologies.”

There is at least 5000 megawatts of available geothermal power in various parts of British Columbia, Alberta, and the Yukon. What’s more, the report’s authors write, the cost of delivering geothermal power is expected to rival the costs of coal within 15 years or so. The limitations of developing the huge geothermal resource have a lot to do with location: Some of the most promising areas are far away from load centers, and the costs of developing huge transmission corridors to bring the power to where it is needed would make such projects unfeasible. Still, there is enough located in accessible areas to make a big difference.

See on spectrum.ieee.org

Lockheed Martin Pioneers Ocean Thermal Energy in China – Engineers

See on Scoop.itGreen Energy Technologies & Development

A 10-megawatt ocean thermal energy conversion plant is under way

Duane Tilden‘s insight:

>[…] the company has been working on OTEC since the 1970s, and the technology hasn’t changed drastically since then. OTEC systems make use of the temperature differential in tropical areas between warm surface water and cold deep water. In most systems, ammonia, which has a very low boiling point, passes through a heat exchanger containing the warm water. The ammonia is vaporized and used to turn a turbine, and then it’s cycled past the cold water to recondense. This is a renewable energy technology with the rare capacity to supply base-load power, as water temperatures are fairly stable.

The ammonia passes through a closed loop, while the water comes and goes through massive pipes. The project in China may pump cold water up from a depth of about 1000 meters, using a pipe that’s 4 meters across. Varley says that some of the infrastructure can be borrowed from the offshore drilling industry: “We showed them our requirements for the platform, and they yawned and said, ‘Is that all you got?’ ” he says. “But then we showed them the pipe.” Attaching the massive pipe to a relatively small floating platform creates unusual stresses, Varley says. Lockheed also had to find materials for the pipes and the heat exchangers that could withstand the harsh marine environment.<

See on spectrum.ieee.org

Industrial Energy Management – Contolling Demand & Energy Usage

See on Scoop.itGreen Energy Technologies & Development

Demand-control technology supports multiple approaches for taming energy costs without sacrificing production efficiency.

Duane Tilden‘s insight:

>Navigant Research argues that efficient energy management will soon be as important as product quality in determining manufacturers’ competitive position within their respective industries. That importance, according to Navigant, is reflected in the compound annual growth rate for industrial energy management software and services.

At its current growth rate, the global market for industrial energy management solutions will nearly double over the next 7 years, going from $11.3 billion in 2013 to $22.4 billion in 2020… <

See on www.plantengineering.com

California based Pattern Energy files for IPO to $345 million – Wind Power

See on Scoop.itGreen & Sustainable News

(Reuters) – Renewable power producer Pattern Energy Group Inc filed with U.S. regulators on Friday to raise up to $345 million in an initial public offering of common shares.

 

Duane Tilden‘s insight:

>The California-based company owns and operates wind power projects and has an interest in eight wind power projects located in the United States, Canada and Chile, representing a combined capacity of 1,041 megawatts.

[…]

 

Pattern Energy said it expects to benefit from growing demand for renewable sources of energy, amid increasing concerns related to greenhouse gas emissions and increasing prices of fossil fuels.

[…]

 

Pattern Energy reported net income of $44.3 million and revenue of $58.7 million in the quarter ended June 30.  The filing did not reveal how many Class A shares the company planned to sell or their expected price.  The company listed BMO Capital Markets, RBC Capital Markets, Morgan Stanley as underwriters to its offering. <

 

See on www.reuters.com

Dong Energy Working to Cut Offshore Wind Cost by 40% This Decade

See on Scoop.itGreen Energy Technologies & Development

Dong Energy A/S, Denmark’s state- controlled utility, is leading a drive to cut offshore wind- power costs by as much as 40 percent by the end of the decade.

Duane Tilden‘s insight:

>“The cost of energy from offshore wind turbines must be reduced,” Bent Christensen, a vice president at Dong’s wind division, said in the statement. “We expect to find significant savings” by cutting the size of foundations and changing the way turbines are installed, he said. Offshore wind power costs about 2.7 times more than onshore turbines, according to Bloomberg New Energy Finance, which puts the cost at about $221 a megawatt-hour over the life of a project. Governments are seeking to reduce the expense of wind farms at sea to expand power supplies without adding to carbon emissions or building on land.<

See on www.renewableenergyworld.com

Debunking the Renewables “Disinformation Campaign”

See on Scoop.itGreen & Sustainable News

Misleading coverage fuels policy uncertainty and doubt, reducing investment security and industry development. Disinformation hurts the industry and retards its—and our nation’s—progress

Duane Tilden‘s insight:

The Fox Business example is not a singular incident. Some mainstream media around the world have a tendency to publish misinformed or, worse, systematically and falsely negative stories about renewable energy. Some of those stories’ misinformation looks innocent, due to careless reporting, sloppy fact checking, and perpetuation of old myths. But other coverage walks, or crosses, the dangerous line of a disinformation campaign—a persistent pattern of coverage meant to undermine renewables’ strong market reality. This has become common enough in mainstream media that some researchers have focused their attention on this balance of accurate and positive coverage vs. inaccurate and negative coverage.

Tim Holmes, researcher for the U.K.’s Public Interest Research Centre (PIRC), points out press coverage is important because it can influence not only “what people perceive and believe” but also “what politicians think they believe.” […]

The disinformation campaign about job creation is not limited to Europe. A Cato Institute article claimed that if people believe a commitment to renewables will fuel job growth “we’re in a lot of trouble.” Yet in 2012 alone, more than 110,000 new U.S. clean-energy direct jobs were created, and in 2010, the U.S. had more jobs in the “clean economy” than in the fossil-fuel industries. The Bureau of Labor Statistics reportsthat direct employment in May 2012 totaled 181,580 for oil and gas extraction, 87,520 for coal mining, and 93,200 for iron and steel production. BLS doesn’t similarly classify solar or wind jobs, but reputable analysts have determined from bottom-up industry surveys that in September 2012, for example, the U.S. had 119,016 direct solar jobs (89 percent full-time, the rest at least half-time), up 27 percent in two years—more than in steel-making or coal-mining. Had you heard that before? Why not?

THE COST OF DISINFORMATION

The sad truth is that the debate on clean and renewable energy is unbalanced, and seldom by accident. The CCGroup’s study showed that only 10 percent of articles focusing on renewables even contained comment from a spokesperson from the renewable energy industry. This violates basic journalistic standards. Renewables must be a part of their own conversation. Much of the conversation on renewables is misinformed and misrepresented. And when bad news does happen, says ACORE president and retired U.S. Navy Vice Admiral Dennis McGinn, opponents of renewables are pushing it “as if it’s the only news. They are dominating the conversation through misrepresentation, exaggeration, distraction, and millions of dollars in lobbying and advertising.”<

See on blog.rmi.org

Creating Value: Energy Retrofits for Buildings

See on Scoop.itGreen & Sustainable News

Buildings in the U.S. consume[…] 42 percent of the nation’s primary energy and 72 percent of its electricity. Much of that energy is needlessly wasted through inefficient design and operation.

Duane Tilden‘s insight:

>Rather than examine energy costs in isolation, our approach assesses how energy and sustainability improvements add value to all parts of a property or company. This approach is not revolutionary, but rather more comprehensive, applying industry-accepted valuation methods to the full set of retrofit value contributions, including saved energy costs, health and productivity benefits, reputation and leadership, and risk reduction.

Energy investment (and resultant property outcomes) should be treated as one of many factors that influence value, including location, tenant mix, quality of design, and more. Evaluating retrofits within the broader context of property/company value enables a logical, defensible calculation and assessment of a deep retrofit’s relative contribution to value. Previous attempts to value energy retrofits have ignored retrofits’ value contributions and overlooked standard approaches to valuing properties and companies.<

See on www.rmi.org

Jobs for the Future: Energy Efficiency creates Employment — ECEEE

See on Scoop.itGreen & Sustainable News

Energy efficiency initiatives create jobs, and normally very good jobs.  Recent analysis shows that between 17 and 19 net jobs can be created for every million euros spent.

Duane Tilden‘s insight:

>Jobs to improve energy efficiency in all end-use sectors are of high value.  Many require technical qualifications, such as engineering or architectural degrees.  Many require re-training from existing jobs. There will be a demand for financial specialists, construction engineers, behaviour specialists, project managers, auditors, data base managers, policy analysts and the like.  And these jobs are available to all, regardless of age or gender.

The hard work of creating these jobs begins once the Directive is finally approved.  The long-term policy framework needs to be in place and the funding and implementation strategy need to be well developed. But in the longer term, opportunity is knocking at the door, and it deserves a welcome mat.<

See on www.eceee.org

London Sewers Fatberg’s used for Clean Energy

See on Scoop.itGreen & Sustainable News

Giant Fatberg Found Under London Has Surprising Use

Duane Tilden‘s insight:

>”Clean” Energy?

Despite the disgust, as well as the inconvenience, there’s actually some good news about fatbergs. Made of dense fats and oils, the structures are highly caloric, which makes them helpful for producing energy.

Rob Smith, a man with the enviable title of London’s “chief flusher,” told us that simply removing the fat and burning it in a turbine can produce more than 130 gigawatts of power each year, or about enough to power 40,000 London homes. The city plans to put the 15-ton berg to the same use, creating some very real cracks in the term clean energy.<

See on news.nationalgeographic.com