CNG Abbreviation

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Popular abbreviations of CNG:

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What does CNG mean?

CNG is the abbreviation for Compressed Natural Gas, a type of fuel gas. CNG is composed mainly of petrol containing methane gas. . CNG is a mixture of hydrocarbon compounds but the major portion is methane. The gas is compressed to 1/100th of its normal volume which it occupies at standard atmospheric pressure of around 200 to 250 kg/cm2, thus getting its name Compressed Natural Gas.

CNG is stored in hard metal containers which are usually cylindrical or spherical in shape. The gas is lighter than air, inflammable in nature, non-carcinogenic, non-toxic and is not liquid in the state as compared to LPG which contains butane and propane in liquefied form.

History of CNG

Gases have been used as an energy source for a long time but the initial experiments for using compressed forms of gas originated in the 1850s in France. In the 1960s, a CNG carrier was tested by the Columbia Natural Gas of Ohio. The carrier took gas in compressed form in pressure bottles. The model was rejected due to its high operational cost and expensive vessels. Several designs have been proposed for optimizing gas transport, each with its set of advantages and drawbacks.

Advantages of CNG

CNG is used prominently currently because of its wide range of advantages such as:

• Fuel systems are sealed preventing leakage issues, spills or losses due to evaporation
• Vehicles supported by these vehicles have a better life and lower maintenance costs as compared to hydrocarbon fuel vehicles.
• CNG mixes easily with air since it is a gaseous fuel.
• CNG vehicles are deemed to be safer than other vehicles.
• It causes much less pollution and emissions as compared to petrol or diesel.
• It has lower carbon emissions, thus shifting to CNG vehicles can improve the greenhouse emissions.

Drawbacks of CNG

Along with its advantages, Compressed Natural Gas does have its set of disadvantages as well.

• Since the gas is stored in a cylinder, much of the space has to be reserved for it.
• Cases regarding the leakage of methane gas suggest that it is a recognized threat to the environment. 
• Also, unburnt methane can get leaked which is a strong greenhouse gas that is nearly 100 times more potent than carbon dioxide.