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POWER PLANT ENGINEERING
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Energy possesses the ability to produce a dynamic, vital effect. Energy exists in various
forms. e.g. mechanical, thermal, electrical etc. One form of energy can transform to other by
Any Physical unit of energy when divided by a unit of time automatically becomes a
unit of power. Power can be defined as rate of flow of energy and can state that a power plant
is a unit built for production and delivery of flow of mechanical and electrical energy.
With the advancement of technology the power consumption is rising steadily. This
necessitates that in addition to the existing source of power such as coal, water, petroleum etc.
other source of energy should be searched out and new and more efficient ways of producing
energy should be decided.
1.1. SOURCES OF ENERGY:
The various sources of energy are:
Fuels- 1. Solids-Coal, Coke Anthracite etc.
2. Liquids-Petroleum and its derivates
3. Gases-Natural gas, blast furnace gas etc
Energy stored in water
Fuels may be chemical or nuclear. A chemical fuel is a substance which releases heat
energy on combustion. The principal combustible elements of each fuel are carbon and
Coal is the largest source of energy for the generation of electricity worldwide, as well
as one of the largest worldwide anthropogenic sources of carbon dioxide releases. Its main
constituents are carbon, hydrogen, oxygen, nitrogen, sulphur, moisture and ash. Coal passes
through different stages during its formation from vegetation. Coal has been used as an energy
resource, primarily burned for the production of electricity and/or heat, and is also used for
industrial purposes, such as refining metals. A fossil fuel, coal forms when dead plant matter is
converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after
that bituminous coal, and lastly anthracite. This involves biological and geological processes
that take place over a long period.