ID 24011 Lecture Notes - Lecture 2: Renewable Energy, Diesel Fuel, Chlorofluorocarbon
Document Summary
In the usa, buildings account for 41% of our total energy use and 65% of our electrical use. Is nonrenewable since the uranium needed to start and maintain the reaction for fission are finite and rare. Is capable of contaminating soil, air, water sources, and those who work in close proximity. In recent years there has been a major turn away from nuclear power after lessons learned from past meltdowns. Requires the least amount of processing and is still widely used. Measuring pollution | greenhouse gases: carbon dioxide (co2) - causes fatigue, methane (ch4) - car exhaust; lethal, chlorofluorocarbons (cfcs) - aerosols, nitrous oxide (n20) - agricultural by product, biomass burning, hydrofluorocarbons (hcfs) - refrigeration, hydrochlorofluorocarbons (hcfcs) - refrigeration. Measuring energy | btu (british thermal unit: a btu is the energy required to increase the temperature of a pint of water by on degree.