11:375:101 Lecture Notes - Lecture 18: Panicum Virgatum, Estuary, Sustainable Energy
5 Dec 2017
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Document Summary
Improvements in energy efficiency could save at least of the energy used in the world and up to 43% of the energy used in the. We have a variety of technologies for sharply increasing the energy efficiency of industrial operations, motor vehicles, appliances, and buildings. About 95% of the energy we use is nonrenewable. 43% energy waste (things we can control) How much useful work we get from each unit energy. Usually the cheapest way to provide more energy. Ex. turning off the lights saves energy and money at the same time. Four widely used devices that waste energy. Ex. heat from use of a car is wasted. Reduces oil imports and improves energy security. Buys time to phases in renewable energy. We can improve energy efficiency in industry, transportation, and homes. Combined heat and power (chp) (60-90% efficient) Two forms of energy from same fuel source. Switch from low-efficiency incandescent lighting to higher-efficiency fluorescent and led lighting.
