Sources of Energy
Have you ever thought about how we get the energy to run the things we take for granite every single day. There are many sources of energy that that are used for transportation, heat, light, and the manufacturing of goods of all kinds. The development of science and civilization is closely linked to the availability of energy in useful forms. The seven main energy sources are fossil fuels, hydroelectric, solar power, win power, geothermal, nuclear power, and biomass energy. By harnessing the sun, wind, falling water, plant matter, and heat from the earth, energy planners expect to decrease the environmental impact on energy use. Most of the nonhydro renewable power comes through some form of combustion, such as the burning of biomass, landfill gas, or municipal solid waste. Little electricity comes from solar, wind, and geothermal sources. Factors that are increasing interest in renewable energy include cost advantages in niche markets, regulatory pressures, customer service requirements, fuel flexibility, and security. One of the biggest source of energy is fossil fuels. Fossil fuels have served as a reliable source of heat for cooking and warmth since the beginning of history. T
Another important source of energy is wind power. The most popular device is a mechanical device that harnesses wind power in order to pump water, grind grain, power a sawmill, or drive an electrical generator. This device is called a windmill. Windmills were probably not known in Europe before the 12th century, but then they became the chief source of power until the steam engine. The windmill is very useful on farms where farmers need water to irrigate their crops on the farm. The windmill pulls water from underground water wells so it can be used for irrigation. The windmill is also made for decoration and sold for large amounts of money. It is very expensive to make and you have to have a large land space to put a windmill on. Also, the windmill makes so much noise that it can't be put near any houses. One important solar energy application concentrators is a solar furnace. They are ideal for research requiring high temperature and contaminant-free environments. Solar cooling can be achieved through the use of solar energy as a heat source in an absorption cooling cycle. Solar power research is being pursued in connection with efforts to design residential and commercial buildings that will use energy more efficiently. Some other promising devices are solar collectors and solar mirrors. The demand for energy has increased steadily, not only because of the growing population but also because of the greater number of technological goods available and the increased affluence that has brought these goods within the reach of a larger proportion of the population. Despite the introduction of more fuel-efficent automobiles, the consumption of gasoline by vehicles in America increased by 18% between 1973 and 1989. The rise in gasoline consumption is attributed to an increase in the number of miles the average person travels and to a 42% increase from 1973 to 1989 in the number of cars on the road. Gas is also a fossil fuel. It is a gaseous substance that burns in the air and releases enough heat to be useful as a fuel. It is advantageous if a fuel gas is readily transportable through pipes and is easily liquefied. Oil gas is a type of gas made by applying heat to various petroleum distillates. Its principal use is as a supplement to natural gas during periods of heavy demand. Coal gas may be any of a variety of gases produced by heating coal in the absence of air and driving off the volatile constituents. It is not as high in fuel value as other gases and often contains tars, light oils, ammonia, and hydrogen sulfide. These common fuels are used in industry, transportation, and the home are burned in the air. Scientists research and develop alternatives to gasoline every single day. One possible alternative is methanol, which can be produced from wood, coal, or natural gas. Another possibility is ethanol. Ethanol is an alcohol produced from grain and currently used in some types of US gasoline. A example of this is gasohol. It is a compressed natural gas, which is much less polluting than gasoline and is currently used by a half-million vehicles around the world. Natural gas is a natural mixture of gaseous hydrocarbons found from the ground or obtained from specially driven wells. The composition of natural gas varies in different localities. It is used extensively as an illuminant and a fuel. Some geologists theorize that natural gas is a by-product of decaying vegetable matter in underground strata. Others think it may be primordial gases that rise up from the mantle. Natural gas was known to the ancients but was considered by them to be a supernatural phenomenon because it appeared as a mysterious fire bursting from the ground.
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Approximate Word count = 2890
Approximate Pages = 12 (250 words per page double spaced)
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