ENVS 1126 Lecture Notes - Lecture 22: Sewage Sludge, Pellet Stove, Corn Oil
23 Nov 2016
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Intermittent winds require backup or batteries: wind farms can be visually unappealing, turbines can be hazardous to birds. When placed on migratory routes or in critical habitat. But far fewer die than from cars, traffic, and windows: offshore wind farms use dependable, strong winds. They have less of a visual impact. Land does not need to be bought: new turbines in 2011 displaced emissions from 65 coal plants. Indirect solar energy: biomass energy: burning firewood for heat is the oldest form of energy. Renamed utilizing biomass energy : biomass energy: energy derived from present-day photosynthesis. Is ahead of hydropower in u. s. renewable energy. Most is used for heat: produced by burning wood or municipal waste, generating methane, or producing alcohol. Burning firewood: with enough forests, burning firewood (fuelwood) can be a sustainable energy resource. The primary cooking and heating source for 2. 6 billion: five million u. s. homes use only wood stoves for heat.
