Closed Loop Cooling Saves Millions of Gallons of Water in Texas Combined Cycle Natural Gas Power Plant

Source: gereports.ca

>” […] Instead of water, each of the two plants will use two powerful air-cooled “Harriet” gas turbines and one air-cooled steam turbine developed by GE. “The technology uses the same cooling principle as the radiator in your car,” Harris says. “You blow in the air and it cools the medium flowing in closed loops around the turbines.”

The power plants, which are expected to open next year, will be using a so-called combined cycle design (see image below) and produce power in two steps. First, the two gas turbines (in the center with exhaust stacks) extract energy from burning natural gas and use it to spin electricity generators. But they also produce waste heat.

The system sends the waste heat to a boiler filled with water, which produces steam that drives a steam turbine to extract more energy and generate more power.

But that’s easier said than done. The steam inside the steamturbine moves in a closed loop and needs to be cooled down back to water so it could be heated up again in the boiler. “Normally, we cool this steam with water, which evaporates and cools down in huge mechanical cooling towers,” says GE engineer Thomas Dreisbach. “A lot of the cooling water escapes in those huge white clouds you sometimes see rising from towers next to power plants.” The Exelon design is using a row of powerful fans and air condensers (rear right) to do the trick and save water.

Similar to the steam turbines, GE’s Harriet gas turbines also use air to chill a closed loop filled with the coolant glycol and reduce the temperature inside the turbine. The combined efficiency of the plant will approach 61 percent, which in the power-generation industry is like running a sub 4-minute mile. […]”<

 

 

See on Scoop.itGreen Energy Technologies & Development

China’s Switch to LNG From Coal Will Cut Global Pollution

To many people, natural gas seems to be more of the same, a continuation of the old fossil fuel path that has driven industrialization, air pollution and global warming.

Source: www.vancouversun.com

“> […]  China is currently producing twice the greenhouse gases of the United States. And its emissions are growing rapidly. Its emissions surpassed those of the U.S. in 2006, reached double the U.S. in 2014, and are expected to rise by seven per cent per year for the foreseeable future. China obtains 70 per cent of its electricity from burning coal, by far the worst polluter. China has plans for doubling its use of coal in the next 10 to 15 years. Meanwhile, the emissions from the U.S. have stabilized, partly from a slowing economy, but the biggest effect came from a switch from coal to natural gas. If you replace an old coal power plant with a modern natural gas one, you can cut carbon dioxide emissions by a factor of three.

Natural gas doesn’t cut emissions to zero; it is still a fossil fuel. But it obtains much of its energy from hydrogen, an atom that out numbers the carbon atoms in methane (the key component of natural gas) by 4:1. Natural gas can be burned with much higher efficiency than coal, by use of a combined cycle turbine that harnesses both gas and steam power generation.

China wants to move away from coal, to natural gas, nuclear, and solar. Their chief concern is not global warming, but the horrific air pollution that is killing an estimated 4,000 people per day in China, 1.6 million per year. […]”<

See on Scoop.itGreen & Sustainable News

Facts About Solar Powered LED Lights

Originally posted on Clearworld Solutions:

led street lamps

In spite of all the hype about combating global warming and switching to environmentally friendly sources, little attention has been given to the streetlights. Whilst they are crucial to the public, they are very energy consuming, and their servicing is costly. Thus, it is worthy of note when a big city like Los Angeles reports that it will replace 140,000 streetlights with LEDs.

LEDs are attaining traction as a great alternative to conventional lighting because they are relatively environmentally friendly, don’t consume much power and have long life spans. They survive so long, 14 years or more in some instances, that they can be regarded as “semi-permanent”.

Several of the most significant electronic firms see LEDs as the destiny of lighting. The LED market of seasonal lights, lights on the Empire State Building, and so on, is estimated to have a worth of $1 billion by 2013.

In earlier times…

View original 341 more words

Wind Turbines

Originally posted on Rotronic UK - BLOG:

Its been pretty windy recently, So wind farms are probably doing quite well at the moment. The biggest wind farm in the world, at the moment, is the London array, which can produce 630MW of power.

Wind Energy in General

The future is very encouraging for wind power. The technology is growing exponentially due to the current power crisis and the ongoing discussions about nuclear power plants. Wind turbines are becoming more efficient and are able to produce increased electricity capacity given the same factors.

Facts & figures:

There is over 200 GW (Giga Watts) of installed wind energy capacity in the world.

The Global Wind Energy Council (GWEC) has forecasted a global capacity of 2,300 GW by 2030. This will cover up to 22% of the global power consumption.

WindPower
Converting wind power into electrical power:

A wind turbine converts the kinetic energy of wind into rotational mechanical energy. This energy is directly converted, by a generator, into electrical energy. Large wind turbines typically have a generator installed on top of the tower. Commonly, there…

View original 489 more words

Russian Energy Producer Rosneft LNG Plant Reported Delayed for Two to Five Years

MOSCOW (Reuters) – Russian energy producer Rosneft may have to delay development of its liquefied natural gas (LNG) plant on the Pacific island of Sakhalin for at least two years, sources said, after prices fell and financing all but dried up due to Western sanctions.

Source: www.reuters.com

>”[…] Rosneft, which has spearheaded President Vladimir Putin’s drive to increase oil and gas output and secure Russia’s energy dominance, signed an agreement with Exxon in 2013 that aimed at starting production of 5 million tonnes per year of LNG from 2018 at Sakhalin.

Russia is the world’s largest exporter of natural gas but mostly exports it by pipeline to customers in Europe. Once liquefied, natural gas can be transported by ship to customers in Asia, helping fulfill the Kremlin’s goal of finding new markets.

Two sources with direct knowledge of the project said the 2018 target was no longer realistic.

A source at Rosneft, who declined to be named because he was not authorized to speak to the media, said the plant would most probably “be postponed for three to five years because of lack of funds and low fuel prices”.

A second source said it could be delayed for two years.

“This is not a surprise,” the source said. “The year 2018 had never been seen as the final deadline. All the stuff that’s happening – a decline in LNG prices, a slump in demand, the economic crisis – only confirms that.”

A Rosneft company spokesman said there had been no change to the project’s timeline: “Rosneft has not revised the terms for the implementation of the far east LNG project.”

Exxon’s Moscow office declined to comment. A spokesman at Exxon’s headquarters in Texas also declined to comment.

In May 2014, Rosneft and Exxon signed a deal to continue work on the LNG plant, which will be partly fed from gas produced at Sakhalin-1, an oil and gas project in which Exxon is a major investor. […]”<

See on Scoop.itGreen & Sustainable News

Woodfibre LNG Plant: Old Technology, Design Flaws and Environmental Issues

Speakers at a presentation in West Vancouver on the risks associated with the proposed LNG project in Howe Sound voiced concerns, Wednesday, over everything from environmental contamination to the risk of explosions from transporting natural gas.

Source: www.nsnews.com

>”[…] “Canada doesn’t have a whole pile of rules about LNG because it doesn’t have a whole pile of plants,” said Eoin Finn a seasonal resident of Bowyer Island in Howe Sound, and speaker at the event. Finn holds a PhD in physical chemistry and is a close follower of the LNG project.

He said an LNG plant of this size has never before existed in Canada. He has concerns over the country’s lack of environmental regulations in place against this particular resource.

“There are no plants on the West Coast of Canada nor on the U.S. except a tiny one in Alaska but that’s 100 miles from anywhere and it’s about one-tenth (the size of) Woodfibre.”

When it comes to the risks associated with the proposed development, Finn said there are many, including emissions output, the risk of shipping accidents and the plant’s cooling system, which would use seawater.

“One of the big issues is that the plant will be cooled by seawater from the sound. This is pretty old technology that’s been dismissed and refused and abandoned in California and Europe.”

He said that the current proposed cooling system for the plant would suck in 17,000 tonnes of seawater (3.7 million gallons) per hour, and chlorinate it while it circulates through the system, before releasing it back into Howe Sound.

Finn explained that any such practice would be “extremely damaging” to marine life and that similar systems down the coast in California have been banned.

Although the plant will be powered by electricity, Finn said it will still produce emissions, including 140,000 tons of carbon dioxide a year.

Among Finn’s other concerns was tanker traffic associated with the project, which would see between six and eight tankers navigating through the sound per month.

He cited a risk of explosions associated with the ships, which could have potential negative effects on area property values. Large waves generated from those vessels could also be a problem for the area, something Finn compared to the BC Ferries Fast Cat situation years before.  […]

Wade Davis, Bowen Island resident and professor of anthropology, said the issue of whether or not the plant will go in place holds a deeper meaning than simply a local environmental danger.

“This is not simply about a local issue in Howe Sound, this is a metaphor for who we are to be as a people,” he explained to the audience. “If we are actually prepared to invest our lives in this way, the most glorious fjord in the world, what else in our country will be immune to such violations?” he asked.  […]”<

 

See on Scoop.itGreen & Sustainable News

Smart Building Investment to Reach $17.4B by 2019

According to a new IDC Energy Insights report, “Business Strategy: Global Smart Building Technology Spending 2015–2019 Forecast,”* smart building technology spending will grow from $6.3 billion in 2014 to $17.4 billion in 2019, registering a compound annual growth rate of 22.6 percent. The most aggressive adoption will be in Asia/Pacific, North America, and Western Europe.   …Continue Reading

Source: www.energymanagertoday.com

>”[…]

After several years of slower-than-expected growth, the smart building technology market is expected to grow rapidly as there is increasingly broad market awareness of the business value. Smart buildings enable facility optimization through the convergence of information technology and building automation.

In developing this forecast, several trends were identified. One trend is that vertical industries have a large impact on the rate of adoption of smart building technologies. Buildings managed in the government or healthcare verticals, for example, tend to be more mature in their appreciation of the benefits of smart buildings and more advanced in their deployment. Secondly, investments over the past several years have focused on HVAC systems. Customers are now beginning to expand their evaluation to lighting, plug load, equipment maintenance and other issues.

From a geographic perspective, North America will continue to implement smart building technology driven largely by corporate objectives of controlling and reducing energy costs. Many European nations will continue to expand their investments in smart building technology, driven by continued EU and local governmental regulations. And within Asia/Pacific, China’s rapid building boom continues apace, resulting in new construction with many smart building capabilities designed in from the beginning.”<

See on Scoop.itGreen Building Operations – Systems & Controls, Maintenance & Commissioning

UK Green Investment Bank Raises £463m on its planned £1bn Offshore Wind Farm Fund

The UK Green Investment Bank plc (GIB) has announced that its FCA regulated subsidiary, UK Green Investment Bank Financial Services Limited (GIBFS), has reached first close on commitments of £463m on its planned £1bn fund to invest in operating offshore wind farms in the UK.

Source: www.greeninvestmentbank.com

>” […] £463m of capital raised at first close, to be invested in UK offshore wind projects.Investors include UK pension funds and a sovereign wealth fund.Innovative transaction creating the world’s first dedicated offshore wind fund.This is the first fund raised by the GIB group, a first move into asset management and the first time it has managed private capital since its formation.This announcement marks the end of GIB’s financial year. It committed £723m to 22 green energy projects across the UK in 2014/15. GIB has now backed 46 UK projects with a total value of almost £7bn.

The UK Green Investment Bank plc (GIB) has announced that its FCA regulated subsidiary, UK Green Investment Bank Financial Services Limited (GIBFS), has reached first close on commitments of £463m on its planned £1bn fund to invest in operating offshore wind farms in the UK.

First close marks the completion of the first stage of fundraising and is triggered by the commitment of an initial group of investors.

The initial investors comprise UK-based pension funds and a major sovereign wealth fund. GIB is also investing £200m in the fund. Fundraising continues and GIBFS expects to raise additional funds from other investors to reach the £1bn target.

In addition to the £463m of fund commitments raised, an additional significant amount of investor capital is available to co-invest into projects alongside the fund.

The fund is an innovative, first-of-a-kind transaction. It is the world’s first fund dedicated to investments in offshore wind power generation and, once fully subscribed, will be the largest renewables fund in the UK. The fund has an expected life of 25 years, allowing a new class of long-term investor to enter the sector.

This is the first fund raised by the GIB group and its first step into asset management. It is also the first private capital to be managed by the GIB group. It will be managed by a new FCA-regulated and authorised subsidiary called UK Green Investment Bank Financial Services Limited which is staffed by a dedicated team.

GIB has now transferred its investments in two operating assets into the fund, which will produce immediate cash yield for investors. They include:

Rhyl Flats. A 90 MW, 25 turbine wind farm operated by RWE Innogy UK off the coast of North Wales. It has been operational since December 2009. GIB has sold its full 24.95% equity stake in the project to the Fund.Sheringham Shoal. A 317 MW, 88 turbine wind farm operated by Statkraft and located in the Greater Wash area off the coast of Norfolk. It has been operational since October 2012. GIB has sold its full 20% equity stake in the project to the fund.

These two offshore wind farms are able to produce 1,290 GWh of renewable energy annually, enough to power 305,000 UK homes. The fund also has a strong pipeline of future investment opportunities.

Evercore Private Funds Group is acting as advisor and exclusive global placement agent for the fundraise and King & Wood Mallesons is acting as legal counsel to the fund. […]”<

See on Scoop.itGreen & Sustainable News

“Behind the Meter” Energy Storage Solution Manages Peak Demand Charges for Buildings

Sharp Electronics Corporation’s […] 30 kW storage system is coupled with Baker’s existing 90 kW solar PV system. Baker Electric, a key channel ally of Sharp, has selected theSmartStorage® solution to help cap expensive utility demand charges for its commercial building customers.

Source: www.marketwired.com

>” […]

Peak demand charges are the fastest growing part of utility bills for commercial and industrial customers and can represent up to 50 percent of a company’s monthly utility bill. The SmartStorage® energy storage solution is a unique battery-based demand management system designed to reduce commercial and industrial buildings’ peak electricity use. It combines Sharp’s intelligent energy management system with cutting-edge hardware, operating seamlessly as a stand-alone solution or when deployed along with a solar system.

“Baker Electric brings decades of experience offering innovative technologies to its customers, including solar solutions in recent years. Their PV solutions coupled with our SmartStorage® energy storage solution provide a powerful duo for building owners wanting to lower peak demand usage without disrupting their day-to-day operations,” commented Carl Mansfield, General Manager of Sharp Electronics Corporation’s Energy Systems and Services Group.

The SmartStorage® system employs sophisticated, predictive analytics and controls to manage the release of energy from the battery, resulting in high performance, high system efficiency and world-class reliability. The SmartStorage® system can also make existing solar installations economically viable where they otherwise would not be.

Baker Electric’s SmartStorage® system installation is backed by Sharp’s innovative 10-year Asset Management Service Agreement which provides all routine and unscheduled maintenance coupled with a 10-year demand reduction performance guarantee.

“Our customers have come to expect the highest quality, highest performing products available on the market. After an exhaustive search in identifying the best solution to help lower demand charges for our customers and our own facility, we chose Sharp’s SmartStorage® system, not only because it exceeds the quality standards we are known for, but because we also have confidence in Sharp standing behind its product by offering its unique 10-year Asset Management Service Agreement and performance guarantee,” said Ted Baker, CEO of Baker Electric.

The SmartStorage® energy storage solution has undergone more than 18 months of field testing benefitting from Sharp’s world-class attention to quality and safety. The energy storage component of Sharp’s SmartStorage® system consists of state-of-the art lithium-ion batteries, which have been tested, listed and labeled as compliant with UL safety standards.

[…]”<

See on Scoop.itGreen Energy Technologies & Development

Smart Grid Testbed For Industrial Electrical Grid Innovation

Industrial Internet Consortium announces first energy-focused testbed.

Source: www.cbronline.com

The Communication and Control Testbed for Microgrid Applications, the first energy-focused testbed, was today [Mar 27/2015] announced by the Industrial Internet Consortium.

Member organisations including Real-Time Innovations (RTI), National Instruments, and Cisco, will collaborate on the project, working with power utility firms CPS Energy and Southern California Edison. Additionally, Duke Energy and power industry organisation Smart Grid Interoperability Panel (SGIP) will be also involved.

In order to put an end to renewable energy waste in neighbourhoods or businesses, a new architectural innovation was found to be needed.

Today’s power grid relies on a central-station architecture, which is not designed to interconnect distributed and renewable power sources such as roof-top solar and wind turbines. The system must over-generate power to compensate for rapid variation in power generation or demands.

The Communication and Control Testbed will introduce the flexibility of real-time analytics and control to increase efficiencies, ensuring that power is generated more accurately and reliably to match demand.

The solution proposes re-architecting electric power grids to include a series of distributed microgrids which will control smaller areas of demand with distributed generation and storage capacity.

These microgrids will operate independently from the main electric power grid, but will still interact and be coordinated with the existing infrastructure.

In order to ensure a coordinated, accepted architecture based on modern, cross-industry industrial internet technologies, companies taking part in the venture will work with Duke Energy and SGIP.

The Communications and Control framework will be developed in three phases, with initial developments being tested in Southern California Edison’s Controls Lab in Westminster, CA.

The final stage of the project will culminate in a field deployment that will take place at CPS Energy’s “Grid-of-the-Future” microgrid test area in San Antonio, Texas.

Stan Schneider, RTI’s CEO and IIC Steering Committee member, said: “The smart grid is a critical infrastructure component of the Industrial Internet of Things.

“The IIoT will span industries, sensor to cloud, power to factory, and road to hospital. This key first step will address a significant barrier to the efficient use of green energy.” […]”<

See on Scoop.itGreen Energy Technologies & Development