Energy Challenge

Cheap and abundant vast reserves in us india china

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Unformatted text preview: used (40%) Electricity generation options: Centralized fossil power plants (coal, gas, sometimes oil) Nuclear power plants (uranium fueled) Centralized renewable power plants (wind, solar PV, solar thermal, hydropower, geothermal) Decentralized fossil or renewables (rooftop PV, on- site generators) Making electricity: Turbines: need temperature differential to get turbines to turn Spin the turbine by heating water to create steam (with fossil fuels, nuclear, other thermal source) Wind power to run turbine and generator rather than steam Hydroelectric dams use water to move turbine Make directly from sunlight Solar photovoltaic (PV) Make directly from chemical bonds (hydrogen fuel cells) Need whole web of transmission of electricity for it to get to your home Coal: for electricity and process heat Pros: Cheap and abundant: vast reserves in US, India, China and Australia Major employer, politically powerful Cons: Nuclear: Pros: Cons: Mining is dangerous Highly polluting: Combustion produces par...
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This document was uploaded on 03/27/2014 for the course STIA 305 at Georgetown.

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