GE CLST M1B Lecture 8: Alternative Energy Resources: Energy Efficiency and Renewable Energy Sources
21 Aug 2017
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Alternative energy resources: energy e(cid:126)ciency & renewable energy. Energy e(cid:126)ciency: ability to obtain same output with smaller input. Personal choices can be made to reduce energy consumption. We can conserve energy by developing more e(cid:126)cient tech. Rebound e(cid:125)ect : e(cid:125)ect of gain in e(cid:126)ciency can be diminished by increased consumption. Important to consider also the e(cid:125)ect of extracting the resource on the environment. Hydraulic fracturing (fracking): injection of high pressure water, sand and/or chemical extract and hydrocarbons (o ) from low permeabilities could alsty depo be used to extract uranium. Wastewater injected in designed wells increases man-made earthquakes. Petroleum : 1. 5 trillion barrels of proven reserves. Any energy source other than fossil fuels. It does not need to be renewable. Uranium is the heaviest naturally occurring element on. Most abundant isotope on earth (99. 3%): u-238. Naturally (cid:128)ssible isotope: u-235 (naturally found in 0. 7%) Capable of sustaining a nuclear (cid:128)ssion chain reaction.
