Showing posts with label presentation. Show all posts
Showing posts with label presentation. Show all posts

Monday, October 18, 2010

The End of Oil as We Know It - 2010 ASPO-USA Conference

Global Energy Experts Agree: We are Facing the End of Oil as We Know It WASHINGTON (October 12, 2010): Economists, activists, technical experts and policymakers from across the political spectrum gathered here, October 7-9, to discuss the global energy crisis. After 150 years of oil extraction; most major oil exporting nations are well past their supply peaks, defined by scientists as “Peak Oil.” At the Association for the Study of Peak Oil and Gas’ (ASPO-USA) sixth annual conference speakers offered a single, coherent picture of a world unprepared to encounter energy limits, petroleum scarcity and the inevitable—and possibly unprecedented—rise in prices. “We are on the brink of a major energy crisis,” stated Jim Baldauf, President of ASPO-USA. “The era of low-cost, easy to get oil has come to an end. Yet, our society is heavily dependent on oil and we have no contingency plan. It is our goal every year to bring together the world’s best global energy experts to grapple with solutions to this catastrophic situation and discuss the future.”

The presentation files of the 2010 World Oil Conference have been posted on the aspo-usa web site including:

Monday, June 28, 2010

World3 in Modelica: System Dynamics Models

World3 in Modelica: Creating System Dynamics Models in the Modelica Framework

This paper and presentation by F. E. Cellier introduces a new release of the System-Dynamics library of Modelica and shows how it is being used by discussing a fairly large application code: Meadows’ World3 model.

Meadows’ only talked in Limits to Growth about the results obtained with the model. The model itself, originally coded in Dynamo, was described in a separate book.

Meadows’ World3 model has seen two major upgrades since its original inception, one in 1992, i.e. after 20 years, and the second in 2002, i.e., after 30 years. The World3 application code contained in SystemDynamics 2.0 implements the 2002 version of the World3 model. In the code, we offer not only the basic model, but also all 10 scenarios that Meadows and co-workers are talking about in Limits to Growth: The 30-Year Update.

Future Research

What future additions are in the works? In today’s world of dwindling fossil fuel reserves, it becomes important to track how much energy we are actually using. Whereas classical System Dynamics is designed to track material flows, it does not track energy flows. This is a major drawback of the methodology.

For this reason, a second version of the System Dynamics library has also been released as a sublibrary of BondLib, our bond graph library. In that version, all material flows are represented internally by bond graphs. A bond graph naturally tracks energy flows. Each energy flow, in that version of the library, is represented as the product of a specific enthalpy and a mass flow. Hence we can track material flows and energy flows simultaneously.

When I drive my car from home to work, I am not only spending energy in the form of the gas that my car consumes. Some energy was also spent in producing the car, and more energy will be spent in discarding it at the end of its lifecycle and in recovering those materials from it that can be recycled.

The accumulated energy that accounts for all of those indirect uses of energy is called emergy. The specific enthalpy can be used to encode in the model the specific emergy, i.e., the emergy per unit of mass.

I plan on porting examples of emergy modeling, as described in the publications by Howard Odum, over to the bond graph implementation of the System Dynamics library, but this work has not yet been completed.


Check out the full paper and presentation by Prof. Dr. François E. Cellier here.

Thursday, June 10, 2010

BP Statistical Review of World Energy 2010


For 59 years, the BP Statistical Review of World Energy has provided high-quality, objective and globally consistent data on world energy markets. The Review is one of the most widely respected and authoritative publications in the fi eld of energy economics, used for reference by the media, academia, world governments and energy companies. A new edition is published every June.

BP Statistical Review of World Energy June 2010 is available online at bp.com/statisticalreview. The website contains all the tables and charts found in the latest printed edition, plus a number of extras, including:
  • Historical data from 1965 for many sections.
  • Additional data for natural gas, coal, hydroelectricity, nuclear energy, electricity and renewables.
  • An energy charting tool, where you can view predetermined reports or chart specifi c data according to energy type, region and year.
  • An oil, natural gas and LNG conversion calculator.
  • PDF versions and PowerPoint slide packs of the charts, maps and graphs, plus an Excel workbook of the historical data.

Wednesday, November 18, 2009

The Challenges: Food Insecurity and Climate Change - Summary Presentation for Plan B 4.0

COULD FOOD SHORTAGES BRING DOWN CIVILIZATION?

“In early 2008, Saudi Arabia announced that, after being self-sufficient in wheat for over 20 years, the non-replenishable aquifer it had been pumping for irrigation was largely depleted,” writes Lester R. Brown in his new book, Plan B 4.0: Mobilizing to Save Civilization.

“In response, officials said they would reduce their wheat harvest by one eighth each year until production would cease entirely in 2016. The Saudis then plan to use their oil wealth to import virtually all the grain consumed by their Canada-sized population of nearly 30 million people,” notes Brown, President and Founder of the Earth Policy Institute, a Washington, D.C.-based independent environmental research organization.

“The Saudis are unique in being so wholly dependent on irrigation,” says Brown in Plan B 4.0. But other, far larger, grain producers such as India and China are facing irrigation water losses and could face grain production declines.

A World Bank study of India’s water balance notes that 15 percent of its grain harvest is produced by overpumping. In human terms, 175 million Indians are being fed with grain produced from wells that will be going dry. The comparable number for China is 130 million. Among the many other countries facing harvest reductions from groundwater depletion are Pakistan, Iran, and Yemen.

“The tripling of world wheat, rice, and corn prices between mid-2006 and mid-2008 signaled our growing vulnerability to food shortages,” says Brown. “It took the worst economic meltdown since the Great Depression to lower grain prices.”

“Past decades have witnessed world grain price surges, but they were event-driven—a drought in the former Soviet Union, a monsoon failure in India, or a crop-withering heat wave in the U.S. Corn Belt. This most recent price surge was trend-driven, the result of our failure to reverse the environmental trends that are undermining world food production.”

These trends include—in addition to falling water tables—eroding soils and rising temperatures from increasing greenhouse gas emissions. Rising temperatures bring crop-shrinking heat waves, melting ice sheets, rising sea level, and shrinking mountain glaciers.

The number of hungry people, which was declining for several decades, bottomed out in the mid-1990s at 825 million. It then climbed to 915 million in 2008 and jumped to over 1 billion in 2009. With world food prices projected to continue rising, so too will the number of hungry people, leaving millions of families trying to survive on one meal per day.

“We know from studying earlier civilizations such as the Sumerians, Mayans, and many others,” says Brown, “that more often than not it was food shortages that led to their demise. It now appears that food may be the weak link in our early twenty-first century civilization as well.

“The world is entering a new food era, one marked by rising food prices, growing numbers of hungry people, and an emerging politics of food scarcity. As grain-exporting countries restrict or even ban exports to keep domestic food prices from spiraling out of control, importing countries are losing confidence in the market’s ability to supply their needs. In response, the more affluent ones such as Saudi Arabia, China, and South Korea are leasing and buying large tracts of land in developing countries on which to grow food for themselves.”

Our early twenty-first century civilization is showing signs of stress as individual countries compete not only for scarce food but also for the land and water to produce it. People expect their governments to provide food security. Indeed, the inability to do so is one of the hallmarks of a failing state. Each year the list of failing states grows longer, leaving us with a disturbing question: How many failing states before our global civilization begins to unravel?

“Will we follow in the footsteps of the Sumerians and the Mayans or can we change course—and do it before time runs out?” asks Brown. “Can we move onto an economic path that is environmentally sustainable? We think we can. That is what Plan B 4.0 is about.”

Plan B aims to stabilize climate, stabilize population, eradicate poverty, and restore the economy’s natural support systems. It prescribes a worldwide cut in net carbon emissions of 80 percent by 2020, thus keeping atmospheric CO2 concentrations from exceeding 400 parts per million. “In setting this goal,” says Brown, “my colleagues and I did not ask what would be politically popular but rather what would it take to have a decent shot at saving the Greenland ice sheet and at least the larger glaciers in the mountains of Asia.”

Cutting carbon emissions will require both a worldwide revolution in energy efficiency and a shift from oil, coal, and gas to wind, solar, and geothermal energy. The energy efficiency revolution will transform everything from lighting to transportation.

The shift to renewable sources of energy is moving at a pace and on a scale we could not imagine even two years ago. Consider the state of Texas. The enormous number of wind projects under development, on top of the 9,000 megawatts of wind generating capacity in operation and under construction, will bring Texas to over 50,000 megawatts of wind generating capacity (think 50 coal-fired power plants) when all these wind farms are completed. This will more than satisfy the needs of the state’s 24 million residents.

Nationwide, new wind generating capacity in 2008 totaled 8,400 megawatts while new coal plants totaled only 1,400 megawatts. The annual growth in solar generating capacity will also soon overtake that of coal. The energy transition is under way.

The United States has led the world in each of the last four years in new wind generating capacity, having overtaken Germany in 2005. But this lead will be short-lived as China appears set to blow by the United States in new wind capacity added in 2009.

China, with its Wind Base program, is working on six wind farm mega-complexes with generating capacities that range from 10,000 to 30,000 megawatts, for a total of 105,000 megawatts. This is in addition to the hundreds of smaller wind farms built or planned.

“The soaring investment in wind, solar, and geothermal energy is being driven by the exciting realization that these renewables can last as long as the earth itself,” says Brown. “In contrast to investing in new oil fields where well yields begin to decline in a matter of decades, or in coal mines where the seams run out, these new energy sources can last forever.”

The combination of efficiency advances, the wholesale shift to renewable energy, and expansion of the earth’s tree cover outlined in Plan B would allow the world to cut net global carbon emissions 80 percent by 2020. In contrast to today’s global electricity sector, where coal supplies 40 percent of electricity, Plan B sees wind emerging as the centerpiece in the 2020 energy economy, supplying 40 percent of all electricity.

We are in a race between political tipping points and natural tipping points. Can we cut carbon emissions fast enough to save the Greenland ice sheet and avoid the resulting rise in sea level? Can we close coal-fired power plants fast enough to save at least the larger glaciers in the Himalayas and on the Tibetan Plateau? Can we stabilize population by lowering birth rates before nature takes over and halts population growth by raising death rates?

“Yes,” affirms Brown. “But it will take something close to a wartime mobilization, one similar to that of the United States in 1942 as it restructured its industrial economy in a matter of months. We used to talk about saving the planet, but it is civilization itself that is now at risk.

“Saving civilization is not a spectator sport. Each of us must push for rapid change. And we must be armed with a plan outlining the changes needed.

“It is decision time,” says Brown. “Like earlier civilizations that got into environmental trouble, we have to make a choice. We can stay with business as usual and watch our economy decline and our civilization unravel, or we can adopt Plan B and be the generation that mobilizes to save civilization. Our generation will make the decision, but it will affect life on earth for all generations to come.”

Worrying Trends

The new summary presentation of Plan B 4.0 outlines worrying trends:
  • As levels of atmospheric carbon dioxide continue to increase, the Intergovernmental Panel on Climate Change has predicted that Earth’s average temperature will rise 1.1-6.4˚C during this century.
  • Our current trajectory is already outpacing these projections.
  • For every 1˚C rise in temperature above the norm, yields of wheat, rice, and corn drop 10 percent.
  • The glaciers feeding rivers like the Yellow, Yangtze, Ganges, and Indus, which provide critical irrigation water, are disappearing at accelerating rates.
  • The United States has been converting more and more corn into fuel for cars; yet the grain needed to fill an SUV’s 25 gallon tank once with ethanol could feed one person for an entire year.
  • World grain and soybean prices tripled from mid-2006 to mid-2008, causing riots and unrest in dozens of countries.
  • More than 1 billion people in the world are suffering from hunger.
  • In an effort to ensure their own food security, some affluent food importing countries, such as Saudi Arabia, China, and South Korea, have begun buying or leasing land abroad to grow their own food.
  • It was food shortages that led to the collapse of several ancient civilizations.