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Group of 77: Science Advisers

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1 Group of 77: Science Advisers
Dylan West, Tylor Mansur, Brittany Davis, Shawn Blazer

2 Efficient Vehicles

3 The Need for Efficiency
As a nation develops, its economy relies increasingly upon the use of vehicles. These vehicles are cheap and inefficient. Carbon emissions from older vehicles is high Many vehicles emit more than 200% more carbon dioxide than current, modern vehicles Even in developed countries, up to 85% of the fuel put into a car is lost either through idling or engine inefficiency.

4 New Technologies Retrofitting older vehicles with modern parts is a possible way to reducing fuel waste and carbon emissions. These parts include an automated system which turns the engine off while the car is idling. Some older vehicles must be removed from the roads completely and replaced. This project could be expensive but would significantly reduce greenhouse gas emissions.

5 Other Solutions Governments can encourage the use of public transit systems. These include trains and buses. If the distance is short enough, carbon-free vehicles like bicycles should be used. These solutions alone are insufficient because of the need for personal cars in developing nations.

6 Reduced Deforestation, Plus Reforestation, Afforestation, and New Plantations

7 Deforestation Among other services, forests provide a carbon sink
It is estimated that up to 3 million square miles of forest have been destroyed since 1947, and that by 2030 only 10% of the currently undisturbed forest area will remain.

8 The World’s Forests

9 Deforestation in Developing Nations
Human pressures on forests are great in tropical developing nations, because the lumber industry is vital to the survival of many people Forests are also cleared for agriculture and urbanization

10 Addressing the Problem
Following America’s national park model – closing off areas of land for preservation – is not economically viable in developing nations In order to save rainforests from destruction, the methods must be financially beneficial for local governments and people

11 Viable Solutions Current agriculture practices should be improved using alternative cultivation techniques, increasing the productivity of existing farms This would diminish the need to clear more land Funding for these efforts would come from: Ecotourism Carbon credits Corporate sponsorship Once funding is in place: Expand protected areas Promote sustainable use Promote ecotourism and entrepreneurship Compensate displaced people Train local scientists and guides

12 Efficient Baseload Coal Plants

13 Coal Usage Nearly 30% of the world’s electricity comes from coal.
Coal use is especially prevalent in developing nations because it is inexpensive. Currently, coal plants – even in developed countries – lose about 66% of the energy stored in coal to heat. To produce one megawatt hour of electricity, coal creates 2249 lbs of carbon dioxide. It is currently the largest source of anthropogenic CO2.

14 Maximizing Coal Efficiency: Cogeneration
When coal is burned, a lot of heat is released into the environment. Cogeneration or Combined Heat and Power (CHP): a method of recapturing thermal energy and using it for heating purposes Energy that would otherwise be lost is put to use. This process is already used in developed nations, and the cost of building a heat-recycling coal plant is comparable to the cost of a regular coal plant, making it a cost-effective way to improve efficiency. Cogeneration can increase power plant efficiency from the current 33% to as much as 80%.

15 Other Solutions Clean coal technology uses carbon capture and sequestration (CCS) technology to reduce greenhouse gas emissions from burning coal. This solution does not improve the efficiency of coal, but rather mitigates the environmental effects of burning fossil fuels This solution is also very costly and will likely not be adopted even in developed nations until around 2020, so for the G-77 cogeneration is likely the most effective method

16 Cogeneration/CHP Useful heat Less waste Electricity Electricity Waste
Fuel Utility Utility and CHP Traditional System Cogeneration

17 Sources


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