Archive for February, 2011


Green Tech

A Global Disaster From the Perfect Solar Storm

The average solar cycle lasts for eleven years. The cycle includes a minimum of solar activity and a maximum. The sun is unusually quiet right now and has been for some time but there should be an increase in solar activity at some point in the near future.

The best current scientific estimate for the next solar maximum is 2012. If this estimate is correct, there is still a few years to try and prevent the potential of a future global disaster. A disaster that would begin on the surface of the sun and could end with tragedy on earth.

The surface of the sun is a mass of plasma that contains highly charged energy particles. Once in a while, some of these particles escape the suns surface and a mass of plasma travels through space on the solar wind. This process is known in scientific terms as a coronal mass ejection but it can also be called a solar storm.

A disaster for the planet would occur if a solar storm reaches and hits the earths magnetic shield in just the right way. If it were to happen, millions of people would lose their lives and the planet would be thrown into chaos as the technology that has become crucial to every day living suddenly gets taken away.

The perfect solar storm will start with skies that will be filled with a bright red aurora. However, soon everything will become dark as every electric bulb becomes devoid of light. The storms damage to the electric grid would be caused through an increased DC current. The runaway current would knock out and melt hundreds of key transformers within minutes, cutting off power for hundreds of millions of people.

Those damaged transformers cannot be repaired only replaced and installing a replacement takes a well-trained crew a week or more. Its incredible to consider that most major electrical utilities have just one or two suitably trained crews available for these type of transformer repairs. In addition, there are only a few spare transformers available and the rest would have to be built to order. Its a process that can take nearly twelve months.

So, the power blackout from the perfect solar storm would last for months but its not just the absence of light that would be the problem. Drinking water would still come through the taps for maybe half a day after the storm. With no electricity to pump water from reservoirs, there would be no more tap water after that.

The electric grid is necessary for almost all natural gas and fuel pipelines to operate. As a result, fuel and natural gas will quickly run out and without food delivery, supermarket shelves would soon become bare. Soon it would become necessary to control public hysteria and the military would have to be called in to restore civil order

There will be no power for heat, cooling or refrigeration until the grid is repaired and after their back up generators run out, hospitals will not be able to provide modern healthcare. A lack of water and food will result in spreading disease but Pharmaceutical companies without electricity will not be able to produce the necessary medicine.

Of course, many will say that this is absurd science fiction and it cannot happen here, but this chilling disaster scenario was outlined in a report released last January (funded by NASA) by the US National Academy of Sciences (NAS).

The fact is that a storm from the sun did hit the earths magnetic field in 1859. The effect of this solar storm on earth became known as the Carrington Event. The event was named after the amateur astronomer who observed two patches of intensely bright and white light emanating from a large group of sunspots that may have produced the event.

The solar storm that produced the Carrington Event created a red aurora across the planet from the poles to the tropics. Throughout the world, telegraph systems crashed, machines burst into flames, and electric shocks rendered operators unconscious. Compasses and other sensitive instruments reeled as if struck by a massive magnetic fist. It can happen again and the technology of the planet is now much more advanced and vulnerable.

The next solar maximum is estimated to return in about three years. A global disaster from the perfect solar storm can be prevented with proper contingency planning. There is still time for the government to be proactive and prepare to avoid disaster by creating a potential response to quickly repair the damage to the electric grid from the perfect solar storm.

James William Smith has worked in Senior management positions for some of the largest Financial Services firms in the United States for the last twenty five years. He has also provided business consulting support for insurance organizations and start up businesses. He has always been interested in writing and listening to different viewpoints on interesting topics. Visit his website at http://www.eworldvu.com or his daily blog at http://www.eworldvublog.blogspot.com


Do We Want Too Much?

What can be done about this increasingly worrying contribution to global warming?

The most important options to reduce aircraft CO2 emissions are:

Changes in aircraft and engine technology; use of alternative fuels, such as (sustainably produced) biofuels; regulatory and operational measures such as improvements in air traffic management; economic measures such as inclusion of aircraft emissions in emission trading schemes.

But, as Giovanni Bisignani, manager of International Air Transport Association (IATA), stated: “Emissions trading schemes only make sense with efficient infrastructure. The IPCC estimates that there is 12% inefficiency in air traffic management globally: we produce up to 73 million tonnes of carbon emissions each year by aircraft flying inefficiently due to air traffic management limitations”. **

On a personal level we could ask ourselves especially in the developed world: “Do we really need to fly so frequently?” The use of telework, teleconference and video conference could be largely increased to plan work and meetings. Can’t the development of land and air transportation infrastructures be balanced better according to the real needs of people and businesses? Trains could connect cities better and more cheaply for example in Europe, where the prices are not competitive with those of many flights anymore (and night train services have been reduced if not cancelled).

Life styles do matter because if millions of people want to have cheap weekends in relatively close tourist locations, many flights are needed to satisfy their desires and consequently a lot of pollution is generated. Also, our per capita emissions could be cut also by reducing the “surplus” trips, by slowing down our life rhythms and enjoying more local attractions in our free time. Who knows? We could discover the “exotic” in our own neighborhoods without flying to the Caribbean Sea…

Furthermore the relationship between the costs and the environmental externalities (i.e. costs not included in the economy like health damages caused by pollution) needs to be considered as well: there are higher marginal impacts for short-distance flights that should be considered in prices paid by passengers.

All these political, technological and personal choices are some of the good examples needed by the developing countries to follow the 21st century’s Western society along a new sustainable path which looks like the only good alternative forward.

**”Talks to reduce aircraft global-warming emissions

For further information on Climate Change please visit the Responding to Climate Change website – http://www.rtcc.org

Going Green-6


News Of Peletex Story

Scientists Ask For Higher CO2 Cuts at Copenhagen’s Spring

The International Scientific Congress on Climate Change was held in Copenhagen between 10th to 12th March and organised by the International Alliance of Research Universities (IARU): the conclusions will be published into a full synthesis report next June. Almost 1,600 scientific contributions of researchers from over 70 countries have been received, and more than 2,500 delegates attended the event.

Connie Hedegaard, Minister of Climate & Energy of Denmark said that we have “to avoid the unmanageable and manage the unavoidable” and she pointed to their example: this European country has become a net energy exporter in 30 years, creating a green growth as a stable solution of the 70s oil crisis. The messages of the congress are various. The risk that current trends of the climatic system will accelerate has a more defined and significant meaning: more probable abrupt and irreversible shifts, and we are already above the worst scenarios published by the Intergovernmental Panel on Climate Change (IPCC) in 2001. Thus the big problem is trying to at least slow down these trends if not reverse them. The experts tell us that fast regional and global mitigation strategies are needed and that the more we wait the more expensive and ambitious actions will have to be taken in the future. The fact that scientists have come to the point of saying that “Inaction is Inexcusable” means also that people who studied relentlessly for decades are frustrated by the inaction of governments, businesses and people: it is understandable given that their work has not been considered and used enough, if not at all, up to now. They are speaking louder and clearer now. The different roles of politicians and scientists have to be combined. It is time for leaders to rely firmly on science as a basis for tough and unavoidable decisions. A “societal transformation” is being asked for by a wide group of the most intelligent people on the planet including diffusion of sustainable behaviours, innovative leadership, removal of subsidies and reduction of “vested interests”. These are all very explicit messages to politicians and public alike: there is a lot of work to do between now and next December’s COP15.

In the final debate the Danish Prime Minister, Anders Fogh Rasmussen, summarised the six messages given by scientists as 6 keywords: Urgency (of the climate change challenge), Direction (long term target to be defined), Action (short term targets to be set), Fairness (to the poorest and most vulnerable), Opportunity (to originate large benefits), Governance (creation of a new global multilateral era). He stated firmly that “Business As Usual is dead” and asked his colleagues to follow Obama’s call for a Green New Deal, already asked for by public opinion and by many political parties in the world.

After the final debate with the panel of scientists an impatient Rasmussen asked for clear words on the CO2 emission target to be set in the new treaty. Prof. Daniel Kammen, Obama’s Senior Policy Advisor, stated that an entire new industrial revolution is needed to cut 1990’s CO2 emissions by 80% in 2050 and Prof. Stefan Rahmstorf agreed on this point. The feeling was that the other panelists didn’t mind… At this point the Prime Minister concluded that the ambition for COP15 can be this -80% long-term objective following the precautionary principle to avoid worse impacts (than the ones presented in 2007 IPCC report) already hypothesized by new works. Overall a more direct communication between scientists and policy makers took place in this huge meeting: now it’s time for delegations to study and prepare the ground for brave steps forward to be made by the international community in Copenhagen’s crucial Conference of the Parties #15. Will we be able to navigate better our “ship” in the solar system during the over 200 rotations it will make before then?

Written by Luca Marazzi on behalf of Responding to Climate Change.

For further information on Climate Change please visit the Responding to Climate Change website –
http://www.rtcc.org

*Next event: Copenhagen, 24-26 May 2009. World Business Summit on Climate Change


The World Energy Crisis

The world has some decisions about sources for future energy. The increase in population and increasing demand present a problem. The cost of conventional non-renewable energy sources is on the rise. Oil, gas, water, coal, and other natural resources have a limit to their supply.

Gas, Oil and petroleum products are more expensive than ever, and the supply is running thin. Many may think that the planet may never run out of these however it seems that drilling these supplies is becoming ever more difficult. There have been three major energy crises thus far.

Due to the shortage of resources and decreased output, the cost of these energy sources has increased rapidly over the years.

How long will it take before all of these resources are exhausted? The truth is that we really do not know. Experts say that 50% of the world’s supply of available oil has been exhausted. Every day the demand is increasing and it could take mere decades to exhaust the supply of crude petroleum.

What could possibly be done about this situation? How can we as a society cope with the energy crisis at hand? What can we consumers do about this? We can all start by understanding the importance and impact that energy has in our lives. These supplies of energy should not be taken for granted. Additionally we should avoid wasting energy.

There are simple things that we could do to conserve such as getting involved with a car pool, check our car tires for proper inflation, and using fuel efficient vehicles. If we can cut down on our use of fuel and oil in everyday activities we can be further prepared for the impending energy crisis.

Another way that we can cope with the energy situation is by utilizing renewable energy sources. Solar and wind power systems are becoming ever more available. These power solutions are feasible, cost effective and environmentally friendly. In addition, you save on your power bill and help contribute towards a better future for our world.

Make power at home with solar and wind energy to eliminate your power bill. Get our complete guide at EnergySolutionsDIY.com.

Blogging Sustainability Pt.1


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The Classroom of Mobile Technology

No Bailouts Necessary – Green Transportation

Unless you have been trapped in a cave for the last seven months you are well aware of the disaster overtaking the American automobile industry. Our government is using billions of taxpayer’s dollars to prop up an industry that has been one of the leading facilitators of numerous ills in our society, which will also take billions of dollars to repair, if it is even possible to do so. 

Air pollution which contributes to increased medical costs, urban sprawl, a negative balance of payments from importing oil and global warming can all be traced at least in part to our addiction to the automobile. Now that I’ve ranted about the autos effect upon our society I also greatly acknowledge that we all, myself included, greatly enjoy the mobility and freedom provided by the pernicious machine. We can’t live with ‘em and we can’t live without ‘em. What are we to do?

A lot has been written about the currently nonexistent plug-in electric car. This machine when it finally hits the market could help solve some of our problems but current pricing estimates place the car in the forty thousand dollar range. I’m sure of one thing, it won’t solve many problems if you don’t sell them and at that price I’d hedge my bets.

However, there is one personal transportation option on the market that fits into all of President Obama’s initiatives for energy self sufficiency, global warming (reduction of green house gases), health care (exercise and weight loss), environmental protection (reduction of air and water pollution), and infrastructure renewal.   That option is the Electric Bicycle.

The electric bike using lithium batteries (traditional lead-acid is very environmentally harmful) can go, depending on load factors and riding habits, roughly twenty miles at twenty miles an hour on one charge. It is almost completely silent, gives off no emissions, does not use foreign oil, does not require much room to operate or park, never needs a tune up and provides exercise. It eliminates many of the drawbacks of riding a traditional bicycle for basic transportation while having few of its own. I recognize that not many of us are hardy enough to ride a bike in the rain, snow or freezing cold but that applies as well to motorcycles, motor scooters and traditional bicycles. The electric bike can get you farther, faster without arriving at your destination soaked in sweat. It can operate in many places where other motorized vehicles cannot and makes taking hills a cinch. Riding five or ten miles to work is no big deal and you can simply pedal around bottled up traffic. Usually the lightweight batteries easily detach from the bike and can be carried into your place of work or school for recharging.

Some electric bicycles offer high tech extras such as LiFePO4 batteries that are good for a thousand recharges, regenerative braking that helps recharge the battery much as a Prius does, and internal gearing to generate more torque for uphill climbs. Most electric bikes use what is referred to as a hub motor. This is not a traditional gear or belt-drive motor but is built directly into the hub of one of the wheels. This motor contains two internal rings of opposing magnets that when power is applied causes the wheel to spin. Such motors need little service and never require oil changes, spark plugs or new belts.

Electric bikes come in several of styles. There are the traditional “beach cruiser” and mountain bike styles as well as electric folding bikes, tricycles and “road bikes”.   The electric folding bikes are particularly interesting. Smaller and lighter than a traditional bicycle, they easily fold up and fit into a car trunk and can be carried on a commuter or subway train with little effort. You can take the train to your stop, unfold the bike and pedal on your way. They are also useful for those who live in tight quarters and have no external place to store their ride.

For those of you that are moderately handy with tools, there are a number of electric bike kits on the market that allow you to adapt an ordinary bicycle into an electric bike. One company, Worldwide Electric Bikes, has a particularly well-designed kit that has many of the features I previously mentioned. These electric bike kits do not require a high level of mechanical ability to install. A few common hand tools, a basic understanding of how things go together and the ability to read directions is all that is required. However, if you don’t know the difference between a crescent and a hex wrench, you may wish to buy a pre-made bike or have someone install the kit for you. If you do choose to go the kit route, you can end up with a much more powerful and sophisticated bike for substantially less money than a factory built electric bike. 

Electric Bicycles in all forms have long been a staple of personal transportation in Europe and Asia where there are hundreds of thousands in operation. In the United States bicycles have traditionally been dominated by the toy or recreation market or for the dedicated enthusiast. In both Europe and Asia, cycling has been a traditional means of basic transportation. I believe that this is going to be more and more the case in this country. People are avidly seeking relief from the high financial and societal cost of automobiles. The electric bicycle, while not a panacea, is definitely poised to help provide a portion of that relief.

Electric Bicycles are inexpensive to purchase, require no license or insurance, have a negligible cost of operation and are totally “green”. So, what’s not to like?

 

http://www.worldwideelectricbikes.com

   


Gasification Sees a New Dawn and How it Will Benefit Us All

If you search for gasification and terms like “wood stove” on video sharing sites these days you will see demonstrations of wood being burnt in little stoves which seem to something almost miraculous and quite different from our idea of wood as a fuel. These little boilers light rapidly, produce no detectable smoke after the initial lighting and firing, and burn very hot.

So what is the technique which is being used, and how might it help us all in weaning society off fossil fuels?

What you have seen is a method of gasification. It differs from combustion in that it uses just 20% to 30% of the air or oxygen necessary for complete fuel combustion. During gasification, the amount of air supplied to the gasifier is carefully controlled with the effect that only a small part of the fuel burns completely. Trials of this process have illustrated that up to 70% of the energy value of the fue used can be recovered as what is known as synthesis gas, or syngas. This producer gas can also be used for various applications similar to natural gas.

This is a part of the magic, and not one really shown in the YouTube type videos, but it makes this method even more useful. This is due to the fact that syngas can be put to useful work, in both drying the feed fuel prior to gasification and after collection and storage it can be used as a fossil fuel replacement, and renewable energy source. When a gasification plant also includes Combined Heat and Power (CHP) and/or electricity export from the site, the gains are even more impressive.

Gasification in addition promises to be the most efficient long-term solution for capturing carbon while utilizing these valuable feedstocks, and storing the CO2 for very long priods, to reduce or halt global warming.

Gasification of wood and wood-type residues and waste in fixed bed or fluidised bed gasifiers with subsequent burning of the gas for heat production is has become state of the art with designers of thes systems working hard to gain the absolute maximum efficiency out of these systems.

These wood gasifiers which are located primarily in the Scandinavian countries are used almost entirely for space heating heat generation. Gasification of biomass is the renewable fuel system preferred by many, and can be defined as the thermal conversion of solid biomass to gaseous fuel.

Gasification has been around for over a hundred years, but the benefits of biochar are only now being discovered. Furthermore, it is still a wide-open field.

Before electric lighting was available in cities there were street lamps fuelled by gasified coal. It is easy to forget that the process has been reliably used on a commercial scale worldwide for more than 50 years in the refining, fertilizer, and chemical industries, and for more than 35 years in the electric power industry. More than 75 companies involved in the development, licensing, and use of these technologies as well as engineering, construction, equipment manufacturing and production of synthesis gas by gasification from coal, petroleum coke, heavy oils and other hydrocarbons.

Gasification has been proven to be a viable technology for CO2 capture and reducing SOx, NOx, particulate matter, and mercury emissions from coal and petcoke-fired power plants, synthetic fuels production, and chemical facilities.

Plants in this category have been capturing carbon dioxide for several decades in chemical plants in China and the United States. It also has potential contributions to make to both transportation and electrical power energy markets. With ongoing concerns about the price and availability of oil, populous countries like the U.S. gasification has proven to be in high demand and quite successful. However, it can also be used in conjunction with gas engines and gas turbines to obtain a higher conversion efficiency than conventional fossil-fuel electric power generation. Gasification can help meet renewable energy targets, address concerns about global warming, and contribute to meeting global environmental targets.

Steve has built a great web site where there is a lot more information about gasification. This is a hot subject indeed for this technology which has become an essential read for all those in alternative energy and interested in taking action to reduce the impact of climate change.

EPA's Science Green Technology


The Global Warming Theory

We have all heard about Global Warming, where the planet’s atmosphere is supposedly heating up. Of course, we as common citizens have no real proof, only what our scientists tell us, along with the Think Tanks and mass media. But how can we trust this when Global Warming researchers have been paid 100s of millions of dollars, and they know if they disagree with global warming theory the money stops being funded and they are out of work?

One of the most fascinating debate points for Global Warming goes something like this; “The majority of scientists say global warming is real and we are already seeing its impact (the drought in the Western USA and the long term drought in Australia.”

This is seriously a flawed argument and let me tell you why. You see it is irrelevant and may not even be true. After all, 55% would be most of the scientists and thus the majority, still leaving a huge contingency of doubters, with plenty of data and research to back up the opposite point of view.

Likewise, during Copernicus’ day only one man believed the world was round, everyone else said it was flat; so the “majority of scientists” argument is irrelevant; majorities don’t mean anything. If you were one of a 100 people and they all jumped off a bridge because they agreed to, would you jump too? That is illogical.

Now then, the second part of the argument has to do with droughts in the world. And we all know that droughts come and go. Remember the Dust Bowl “Grapes of Wrath” in the US? And in the 1950s Australia had a drought just as bad during the same period, same as the one they are having now. This one we notice more because there are more people demanding the same amount of water.

In California, the snowpack this year is normal and anymore puts us above normal, thus, the drought theoretically is over? So, does that mean this so-called Global Warming is over? Of course, not the powers that be, behind global warming will continue to pursue this until it’s no longer in their interests. Think on this.

Lance Winslow – Lance Winslow’s Bio. If you have innovative thoughts and unique perspectives, come think with Lance; http://www.WorldThinkTank.net/.

Slime Ball Award for Green Tech News 003


How it Will Benefit Us All: Gasification

If you search for gasification and terms like “wood stove” on video sharing sites these days you will see demonstrations of wood being burnt in little stoves which seem to something almost miraculous and quite different from our idea of wood as a fuel. These little boilers light rapidly, produce no detectable smoke after the initial lighting and firing, and burn very hot.

So what is the technique which is being used, and how might it help us all in weaning society off fossil fuels?

What you have seen is a method of gasification. It differs from combustion in that it uses just 20% to 30% of the air or oxygen necessary for complete fuel combustion. During gasification, the amount of air supplied to the gasifier is carefully controlled with the effect that only a small part of the fuel burns completely. Trials of this process have illustrated that up to 70% of the energy value of the fue used can be recovered as what is known as synthesis gas, or syngas. This producer gas can also be used for various applications similar to natural gas.

This is a part of the magic, and not one really shown in the YouTube type videos, but it makes this method even more useful. This is due to the fact that syngas can be put to useful work, in both drying the feed fuel prior to gasification and after collection and storage it can be used as a fossil fuel replacement, and renewable energy source. When a gasification plant also includes Combined Heat and Power (CHP) and/or electricity export from the site, the gains are even more impressive.

Gasification in addition promises to be the most efficient long-term solution for capturing carbon while utilizing these valuable feedstocks, and storing the CO2 for very long priods, to reduce or halt global warming.

Gasification of wood and wood-type residues and waste in fixed bed or fluidised bed gasifiers with subsequent burning of the gas for heat production is has become state of the art with designers of thes systems working hard to gain the absolute maximum efficiency out of these systems.

These wood gasifiers which are located primarily in the Scandinavian countries are used almost entirely for space heating heat generation. Gasification of biomass is the renewable fuel system preferred by many, and can be defined as the thermal conversion of solid biomass to gaseous fuel.

Gasification has been around for over a hundred years, but the benefits of biochar are only now being discovered. Furthermore, it is still a wide-open field.

Before electric lighting was available in cities there were street lamps fuelled by gasified coal. It is easy to forget that the process has been reliably used on a commercial scale worldwide for more than 50 years in the refining, fertilizer, and chemical industries, and for more than 35 years in the electric power industry. More than 75 companies involved in the development, licensing, and use of these technologies as well as engineering, construction, equipment manufacturing and production of synthesis gas by gasification from coal, petroleum coke, heavy oils and other hydrocarbons.

Gasification has been proven to be a viable technology for CO2 capture and reducing SOx, NOx, particulate matter, and mercury emissions from coal and petcoke-fired power plants, synthetic fuels production, and chemical facilities.

Plants in this category have been capturing carbon dioxide for several decades in chemical plants in China and the United States. It also has potential contributions to make to both transportation and electrical power energy markets. With ongoing concerns about the price and availability of oil, populous countries like the U.S. gasification has proven to be in high demand and quite successful. However, it can also be used in conjunction with gas engines and gas turbines to obtain a higher conversion efficiency than conventional fossil-fuel electric power generation. Gasification can help meet renewable energy targets, address concerns about global warming, and contribute to meeting global environmental targets.

Steve has built a great web site where there is a lot more information about gasification. This is a hot subject indeed for this technology which has become an essential read for all those in alternative energy and interested in taking action to reduce the impact of climate change.

Green Technology of ISAAC 2008


USA – China – A G2 For Climate and Economy?

China appears to view global warming as an economic issue, Obama’s administration is primarily focused on the current economic crisis as well, but climate change is also a serious crisis and a threat to the world’s economic system itself with all its present and predicted impacts. Don’t these global problems require an integrated economic and environmental strategy? The hypothesized summit between Barack Obama and the Chinese president, Hu Jintao, could be an important step to accelerate urgent actions needed both to face the global economic downturn and to build a solid climate pact.

China, in its last 5-year plan, sets targets to reduce national energy intensity (energy used per unit of GDP) by 20% between 2006 and the end of 2010. According to Deborah Seligsohn, China Program Director on Climate, Energy and Pollution of the World Resources Institute, this target seems to be realizable given their latest remarkable record (-1.8% in 2006, -3.7% in 2007, and -4.2% in 2008.) Last month Hillary Clinton met experts from the Asia Society and the Pew Centre for Climate Change that together wrote a report that could help the creation of this US-Chinese partnership on climate change. But the good examples from China, although not directly referred to CO2 emissions, and Obama’s ambitious plan on energy and climate will need decisions from other 13 countries (or federations such as the EU), including Russia, India, Japan to get 80% of world’s emissions “under control”. Nowadays the other 173 countries account for about 20% of total CO2 emissions, but population increase and old development patterns could dangerously increase their “pollution share” in the future: every nation will be then required to cut the CO2, but large amount of money are needed to do so. Where will our leaders take Dollars, Yuan or Euros these days?

Next steps: -264 days to COP15:
Two events along the path to Copenhagen will take place in Bonn from March 29th to April 8th: the 7th session of the AWG-KP (Ad Hoc Working Group on Further Commitments for Annex 1Parties under the Kyoto Protocol) and 5th session of the AWG-LCA (Ad Hoc Working Group on Long-term Cooperative Action under the Convention). As we can read on the UNFCCC website “this is the first of three planned negotiating sessions before COP 15 in December” and can hopefully prepare a good ground for delegations and political leaders to decide upon.

Written by Luca Marazzi on behalf of Responding to Climate Change.

For further information on Climate Change please visit the Responding to Climate Change website – http://www.rtcc.org

Article Source: http://EzineArticles.com/?expert=Luca_Marazzi

Hybrid SUV


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Water Efficiency – Water Used in Generating US Electricity

In my four-article series on water use (The Resource Matrix), I took you on a journey to reveal the layers of The Resource Matrix in order to help you understand how water will be a highly contested commodity tomorrow, possibly as much as oil is fought over today.

You learned about your water footprint and a website where you can calculate it, virtual water and virtual water transfers, whereby choices here affect water availability elsewhere, to the point of some people not having enough water to drink in order to produce inexpensive dyed cotton, along with insane choices such as growing crops in the desert.

You learned that on average it takes 1854 to 3000 gallons to produce one pound of beef.

Yep, it’s it’s been a great journey through the sidetrip city of the Resource Matrix.

Today, we’ve found the on-ramp to the Green Lighting Interstate and are driving to take a look at water use in generating electricity.

For a simple reason. It takes a lot of water to produce electricity.

How much? 5% of all US water? 10%? Can’t be as high as 25%?

Electricity and water?

I thought the issue was fossil fuels and greenhouse gases

The U.S. Geological Survey (USGS) estimated water use in the United States in 2000.

Their grand total: 408 billion gallons per day withdrawn for all uses.

The number 1 spot, weighing in at 48%, was thermoelectric power.

Irrigation earned the runner-up prize at 34%.

The 195 billion gallons need to come from somewhere, and actions have consequences. Environmental ones, as in 40 million fish in the Great Lakes killed each year due to being trapped against water intake devices. That’s a lot of Friday night fish dinners.

How much water is used in generating electricity?

Large fossil fuel and nuclear plants require incredible quantities of water for cooling and ongoing maintenance.

Water for thermoelectric power is used in generating electricity with steam-driven turbine generators. It uses 48% of all water in the US.

According to the Pace Energy and Climate Center, the amount of water used for power plant cooling varies by each specific power plant’s electricity generating technology and size. Nuclear reactors require the most water for cooling, and baseload fossil fuel power plants come in second.

The Salem Nuclear Generating Station alone takes 3 billion gallons a day from the Delaware Bay, according to the Pace Energy and Climate Center.

Nationally:

  • Steam electric generating plants across the nation draw in more than 200 billion gallons per day.
  • Nuclear and fossil fuel power plants drink over 185 billion gallons of water per day.
  • Geothermal power plants add another 2 billion or so gallons a day.
  • Most renewable energy technologies require little or no water for cooling.

These numbers are starting to sound like the same ones the U.S. Treasury and Federal Reserve Bank use.

Imagine watching your favorite science program where astronomers explain that the universe is 78 billion light-years wide (78 billion units of 5,878,630,000,000 miles). There is absolutely nothing in our experience to help us wrap our mind around it.

How much is 3 billion gallons per day?

The Delaware Bay feeds Salem Nuclear Generating Station 3 billion gallons a day.

Imagine this rectangle: a football field with end zones (360 feet long x 160 feet wide). Then add to it walls on each side of the rectangle to create a container to hold the 3 billion gallons you pour into it.

How high do you need to make those walls to contain 3 billion gallons? 6915 feet high. Or 1.3 miles.

Maybe 6915 feet high is still hard to imagine. So how deep do you cover the field in order to feed the Salem plant every minute? Answer: 5 feet deep. Every minute.

48% of all water use: We’re Number One!

How much is 195 billion gallons per day?

Using the USGS figure for 2000, thermoelectric power nationwide used 195 billion gallons a day, or 48% of all water used in the US. My guess is the water use has grown since then.

How high are the walls on our football field now? 449,475 feet or 85 miles high. We’re back to US Treasury and astronomy numbers again.

So, let’s get a higher-level view to help us.

Lake Erie holds 116 cubic miles of water.

Nationally, thermoelectric power uses 195 billion gallons a day – or 64.2 cubic miles a year.

We drain Lake Erie every 22 months.

But the water used is returned to its source.

So what’s the issue about water use?

Power generation returns 98% of the water back to its source (bay, lake, river, ocean).

It’s the environmental consequences.

The Pace Energy and Climate Center explains it neatly:

Withdrawal of large volumes of surface water for either power plant cooling or hydropower generation can kill fish, larvae and other organisms trapped against intake structures (impinged), or swept up (entrained) in the flow through the different sections of a power plant.

Examples include:

  • The Salem Nuclear Generating Station is responsible for an annual 11 percent reduction in weakfish and 31 percent reduction in bay anchovy.
  • At the Indian Point 2 and 3 reactors on the Hudson River, the number of fish impinged totaled over 1.5 million fish in 1987.
  • The 90 power plants using once-through-cooling on the Great Lakes kill in excess of 40 million fish per year due to impingement. (Once-through cooling needs a continual flow of new water, and uses 30 to 50 times that of a closed cycle system. Closed cycles cool down water from steam then reuse it.)

The diversion of water out of the river removes water for healthy in-stream ecosystems:

  • Stretches below dams are often completely de-watered.
  • Fluctuations in water flow from peaking operations create a “tidal effect,” disrupting the downstream riparian community that supports its unique ecosystem.
  • A dam’s impoundment slows water flows, which hinders natural downstream migration of many fish species.
  • By slowing river flows, dams also allow silt to collect on river and reservoir bottoms and bury fish spawning habitat. Silt trapped above dams accumulates heavy metals and other pollutants. Disrupting the natural flow of sediments in rivers also leads to erosion of riverbeds downstream of the dam and increases risks of floods.
  • The impoundment of water by hydropower facilities fundamentally reshapes the physical habitat from a riverine to an artificial pond community.
  • This often eliminates native populations of fish and other wildlife.
  • Dams also impede the upstream and downstream movement of fish and other wildlife, and prevent the flow of plants and nutrients. This impact is most significant on migratory fish, which are born in the river and must migrate downstream early in life to the ocean and then migrate upstream again to lay their eggs (or “spawn”).
  • As mentioned above, withdrawal of water into turbines can also impinge or entrain significant numbers of fish.

The cleanest kilowatt is the one never used:

Back to those compact fluorescent lamps and LEDs

PowerScorecard.org explains the solution:

By re-directing electricity dollars to support environmentally benign energy resources, consumers are empowered, in states that offer supply choice, to influence the existing generating resources that are deployed to meet demand.

They can also support the construction of new and cleaner electricity resources that will be built to meet overall growth in demand in the future. By supporting these power options, consumers can minimize many water use and consumption impacts. Still, directing your dollars to cleaner power products in no way helps remediate damages that already have occurred. Consumers can stop the construction of new hydropower facilities or alter conditions of siting and operation, but they cannot undo previous environmental degradation that occurred at existing hydropower facilities.

In short, reduce your use of electricity.

More Info:

We used several sources for this article, including the PowerScorecard.org website, which is produced by the Pace Energy and Climate Center, which is part of the Pace University School of Law’s Center for Environmental Legal Studies, Pace University, White Plains, New York.

On PowerScorecard, you can get:

  • Ratings of Electric Power Choices for some service areas.
  • More info on electricity and the environment:
    • Technologies
    • Climate change
    • Acid rain
    • Ozone depletion
    • Water use (our article today)
    • Water quality
    • Land: on-site and off-site impacts

Thanks for letting us keep you updated . . .

To your green, brighter future,

Cinnamon Alvarez,

A19

And now I would like to offer you free access to powerful info on energy efficiency that’s easy to read and cuts through all this “green” information clutter — so you can literally start making positive changes today.

You can access it now by going to: http://www.a19.com/pub/articles/

From Cinnamon Alvarez: Founder, A19 — woman-owned green manufacturer of hand-made ceramic lighting fixtures

Green technology

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