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Cng (Compressed Natural Gas)

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Submitted By deepikanagesh
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Compressed Natural Gas more commonly known as CNG is as form of Natural Gas which is used in the transport sector. Natural gas is a mixture of hydrocarbons mainly methane (CH4) and is produced either from gas wells or in conjunction with crude oil production. Due to its low energy density for use as a vehicular fuel, it is compressed to a pressure of 200 - 250 bars to facilitate storage in cylinders mounted in vehicle and so it is called compressed natural gas (CNG).
There are abundant supplies of natural gas in the world and most of these supplies can be developed and produced at a low cost as compared to other natural resources. Natural gas is one of the most cost effective means by which we can maintain the energy supplies but also reduce CO2 emissions.
Natural gas is important in many sectors of the economy. It can be used for varied purposes such as electricity generation, an industrial heat source and can also we used for water and space heating in residential or commercial buildings. It can use to substitute petrol or diesel in the transportation sector.
Among the fossil fuels natural gas has the lowest carbon intensity, hence emitting the least amount of co2 per unit of energy generated compared to other fossil fuels. It burns cleanly and efficiently with very few non carbon emissions. It requires limiting processing unlike oil.
CNG is a clean burning fuel. Since it is mainly composed of methane, when burnt is produces carbon dioxide and water vapor which are the same compounds we exhale when we breathe. Petroleum products when burnt give out much higher carbon emissions, nitrogen oxides and sulphur oxides. Combustion of natural gas gives out very small amounts of these.
Carbon Monoxide emission is reduced by 80% in CNG powered cars than petrol powered gas and this has been true to the case of Delhi which would be spoken about later.

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