Saturday, April 7, 2012

Final exam information

The final exam is read and the point breakdown is as follows:

63% short answer
22% multiple choice
12% matching and ranking
3% fill in the blank

The subjects that will be covered will be:

24% energy mix (putting everything together)
18% coal
7% offshore oil production and the Deep Water Horizon Disaster
6% diamonds and Blood Diamonds BP
6% risk assessment
6% hydroelectric/dams
6% petroleum geochemistry
5% Plundered Planet
5% other
4% energy mix- Dominion
4% energy mix- USA
3% Yellow Dirt
3% Keystone XL pipeline
3% misc. petroleum

The exam should be challenging (I hope) and slightly to moderately shorter than the mid-term. If you have any questions, let me know, otherwise, I will plan on seeing many of you Tuesday at 3:00pm.

Friday, April 6, 2012

Lecture 35 Summary and Notes

Some questions for the day...

1. How is understanding the current world population and expected growth, the relationship between per capita energy use and HDI, and HDI and ecological footprint essential to understanding how humans use resources at unsustainable rates?

2. What are the nine sources of energy listed on the Lawrence Livermore National Laboratory? What are the three largest sources of energy? What are the two major uses of energy? How are the sources of energy split between the two major uses of energy? How much electricity does the US import (net)? What is the approximate % loss of energy throughout the system from start to finish?

3. What factors drive our current energy portfolio (ei why petroleum, natural gas, and coal)? Why highly concentrated energy particularly important ot the transportation sector? Does the US have large reserves of petroleum, natural gas, or coal? What is a reserve? How does US oil production stack up on the world scene? How does the number of producing oil wells stack up on the world scene? Is the US a major producer of coal and/or natural gas? How does current US production of oil relate to production in the past several decades? What is institutional inertia? How does institutional inertia determine (at least partially) our current energy portfolio?

4. What factors drive current interest and potential future increases in alternative energy? How does the current volatility, current high market price, and foreseeably high market price for petroleum increase interest in alternative fuel sources? How has the is the cost of production domestic petroleum production changed in recent years? How is the cost of production domestic petroleum production expected to change in the future? What does Prof. Low mean by "sourcing concerns" when talking about petroleum? Why is this an issue in determining our future energy mix? What are the major pollutants that are emitted during the combustion of fossil fuels? How are do the pollutants differ based on the fuel (petroleum, natural gas, coal) used? What new regulations have just been implemented that might have an effect on the nation's future energy portfolio? How does the push toward a more sustainable society drive current interest and potential future increases in alternative energy?

5. What is the utility of dividing electricity generation sources into baseload, peakers, uncontrollable and predictable and uncontrollable and unpredictable? How to biomass, coal, nuclear, hydroelectric, natural gas, tidal, geothermal, solar thermal, solar PV, and wind fit into these categories?

6. Why is there so little room for large improvements on the generation side of the energy equation?

7. Why is it difficult to compare the environmental, social, and human health consequences of different mechanisms of generating energy?

8. Why is it important to consider the end use of at the generation stage for certain situations? Why is it relatively rare that our systems actually do this. What are some of specific examples of particularly good generation-consumption fits?

9. What is a fuel cell, how does a fuel cell work, and why do you look foolish if you say or insinuate that fuel cells generate energy?

10. What is "the grid"? A shift from less sustainable, traditional baseload and peaker plants to more sustainable uncontrollable and unpredictable will require what changes in "the grid"?

11. What is general anthropomorphized attitude of the American electricity consumer? Why is it important to understand the requirements of electricity generation and distribution? What is a "smart grid"? What specific improvements to existing grid infrastructure will be required to meet the needs of a uncontrollable sustainable energy generation mixes? Which of these challenges will be easier (or harder) to accommodate in the near future?

12. When considering a holistic approach to energy, why is minimizing energy conversion important? How can energy infrastructure be redesigned to address the increasing use of electronic devices that run on direct current? What are examples of directly using mechanical energy to do work instead of using mechanical energy to generate electricity which can then be used to do work?

13. What is co-generation? What is an example of co-generation?

14. What are some examples of "low-hanging fruit" that could be used to reduce energy consumption? What are some examples of the "high-hanging fruit" that could be used to reduce our energy consumption?

Slides from lecture are on Sakai. I will post information on the final exam once I finish writing it.

Thursday, April 5, 2012

Book Review

Your critical review of your book project book should contain the following:

1. a brief summary of the themes explored in the book

2. a comment on what you think the author did well

3. a comment on what you think the author did poorly

4. a comment on whether, after having seen the presentations by the other two book groups, you are happy with your original choice or whether you think that the you would have benefited more from reading one of the other books

You should be able to accomplish this in not much more than 600-800 words which, I am told*, is the length of a New York Times book review.

*thanks, Lauren

Wednesday, April 4, 2012

Reading assignemnt for Friday

Your reading assignment for Friday is U.S. Department of Defense & Renewable Energy: An Industry Helping the Military Meet Its Strategic Energy Objectives.

Yellow Dirt Project Blog Summary

The Fundamentals from Yellow Dirt
-Written by Judy Pasternak
- Most of book takes place in 1940s during WWII and throughout Cold War
-Tells the story of government’s desperate push for more nuclear weapons
- Needed uranium extracted from mine on Navajo land
- Story of Navajo tribe that labored in mine and the subsequent health issues
- Vanadium Company of America (VCA)- mined for vanadium—element that was crucial to the construction of armor plates for warships
-Every 6 pounds of vanadium harvested from carnotite yielded one pound of harvested uranium
- At first uranium secretly sold to U.S. gov’t to support Manhattan Project
- Central focus of book tells the story of the betrayal of Navajo land and people by mining companies and U.S. gov’t
- Despite apparent health effects of uranium, the government still allowed the employment of Navajo people to work on mines
- Practices continued throughout Cold War until end of 20th century due to the demand for atomic bombs at this time
- Effects on Navajo people
- Thousands of Navajo miners worked in mines unprotected despite the warnings from physicians and scientists
- Uranium dust not only affected miners but entire Navajo community due to it contaminated air, soil and water—these findings were presented to government
- Radioactive “yellow dirt” found in Navajo drinking sources, walls and floors, playgrounds, homes and buildings, and garbage dumps. Navajo people still affected by the mining and many deaths can still be attributed to uranium mining in area.

Uranium
— Different grades of Uranium ore
-Very High-grade = 200,000 ppm Uranium (20% U)
- High – grade = 20,000 ppm Uranium (2% U)
- Low-grade = 1,000 ppm Uranium (0.1% U)
- 85 % of Uranium is hydrothermal

The Navajo Culture
- Diné- the name the Navajo call themselves. Means “The People”
- Dinétah = The Navajo Land
- Currently largest federally recognized tribe with 300,048 members
- Reservation is the largest Indian reservation in the United States
- Migrated from Canada, settled near Pueblo people
- Healing: Medicine men = Hatalii
- Believed that violation of taboos causes ailments
- Ceremonies usually last at least 4 days
Politics
- Radium discovered and mined with vanadium in 1910’s and 1920’s
- Used in Marie Curie’s experiments of fluorescence and patent medicines
- Vanadium used to strengthen ship hulls during and after WWI
- Peruvian mine slowing production for VCA by 1931—forced to move to Navajo reservation
- Uranium = a known waste product of Vanadium refining
- Domestic production 1938 of vanadium/uranium = 70,000 tons in 1948; by 1956 = 3,000,000 tons
- October 28, 1957- “We have arrived at the point where it is no longer in the interest of the federal government to expand the production of uranium concentrates”

Chemistry
- Nuclear reaction—change in the nucleus of an atom; emission of radiation
- 1896—discovery of radioactivity in Uranium salts by Henri Becquerel and Marie Curie
-Uranium that remains outside the body is much less harmful than uranium that is inhaled or swallowed
- Long-term intakes of uranium isotopes in food, water, or air can lead to internal irradiation and chemical toxicity, increased cancer risk, and liver damage

Radon
- Inhalation is the main means of entry of radon into our bodies
- Lung cancer and other pulmonary diseases are the main diseases from radon exposure
- Other forms of cancer also prevalent in uranium miners
- Birth defects in Navajo babies during uranium mining were 2 to 8 times higher than national average

Current Domestic Nuclear Situation
- U.S. is the world’s third largest producer of nuclear power
- 2010: U.S. had 104 reactors that produced 807 billion kWh (20% of electrical output)
- Four to six new nuclear reactors expected to be built by 2020
- No new constructed has occurred since 1977
- Since 1970s U.S. has dramatically improved safety and operational performance
- Net capacity is now 90% and safety standards exceed targets
- Exelon- largest U.S. operator—has plans to update most of reactor fleet to provide the equivalent of one new reactor by 2017
-September 2011—Nuclear Regulatory Commission extended 71 reactors w/ more applications for extensions expected in 2014
- The Energy Policy Act in 2005 provided much needed funding for nuclear power
- Tax credits and federal loan guarantees
- Incentivized 19 applications for 14 plants involving 21 reactors all over U.S.
- U.S. government has invested heavily in nuclear reactor research and development
- Particularly concerned with next generation reactor technology
- Domestic uranium production supplies about 10% of U.S. requirements for nuclear fuel
- As of 2008 U.S. uranium reserves provide a projected 23 years of uranium at current demand
- Wyoming and New Mexico lead the nation in total uranium reserves
- Together they hold roughly two-thirds of domestic uranium reserves

Monday, April 2, 2012

Lecture 33 Summary and Notes

Some questions for the day...

1. Real-time, interactive wind maps of the lower 48 (like the one here), while not as useful for siting windmills or win farms, are still pretty awesome.

2. When thinking about the future evolution of electricity generation and distribution, why is it important to consider where population density is the greatest. Why are considerations of the evolution of where Americans live particularly important for the potential future of solar energy?

3.How does electricity consumption vary throughout the day? How does this variation change seasonally? Why is this relevant to discussions of electricity generation from solar energy?

4. How does an industrial-scale solar thermal electricity generation plant work? What are the two basic designs? How does residential (or commercial or small-scale industrial) solar thermal work? How is it different from industrial-scale solar thermal? What are the specific advantages and disadvantages of solar thermal?

5. How does solar PV work (ei how do solar PV panels produce electricity)? What are the four basic categories of solar PV cells? Which are currently the most efficient? Which are currently the most commonly used? Why is there a difference? What % of campus energy is supplied by our new solar PV installations on the parking deck and the Law School? Is the W&L parking garage a net producer or consumer of electricity? Where are the best places in the lower 48 to site solar resources? What are the specific advantages and disadvantages of solar thermal?

6. What are the factors that will determine whether a state will be a net importer or exporter of electricity? What is "the grid"?

Slides from lecture today are on Sakai. Your reading assignment for Wednesday's class is here.

Yellow Dirt Reading Assignment

Hey Guys,

On this page are two links to articles we’d like you to read before our class discussion on Wednesday. On the next page are two graphs that simply help quantify the exposure to uranium that the Navajo people are facing.

1) “Yellow Dirt”: Radioactive Reservation

This link is to an article that does a good job contextualizing “Yellow Dirt”. Be sure to click the “Continue Reading” button if the article isn’t already expanded.

http://www.salon.com/2010/09/19/yellow_dirt/

*note from Prof. Low- I would also recommend looking at Church Rock, NM (mentioned at the beginning of the article) on google maps (click below). Be sure to zoom in and look at the remaining house "footprints" that were left behind after many of the houses were removed.


View Larger Map

2) “The Cold War Threat to the Navajo”
This link is to a very short article that briefly addresses a number of the players and factors that we’ll be discussing on Wednesday. You can even listen to it with 3 different accents..

http://web.ebscohost.com/ehost/detail?sid=3f087595-29f9-46bf-a347-71c98eba4574%40sessionmgr104&vid=4&hid=126&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=a9h&AN=29377619

3) One table and one figure taken from:“Development of risk maps to minimize uranium exposures in the Navajo Churchrock mining district”
By:Jamie L deLemos

Full article available here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2714847/

Figure 3: Percent of participants hauling water from unregulated source, regulated source, and groceries.

*Primary, secondary, and tertiary hauling sources are the first three water sources reported by participants in the survey. N = number of participants that use a primary, secondary, and tertiary source.

Table 2: Environmental history self-reported by survey participants.