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Engr. Mohammad Imam Hossain Rubel, Email: rubelduet04@gmail.com , Skype: mdimam
Comparison between CNG & LPG
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CNG & LPG

Comparison between CNG & LPG

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CNG & LPG

  1. 1. Engr. Mohammad Imam Hossain Rubel, Email: rubelduet04@gmail.com , Skype: mdimam Comparison between CNG & LPG Objects CNG LPG Constituents Methane CH4 Propane and Butane C3H8 C4H10 Source Obtained from natural gas-and- condensate wells, oil wells, coal bed methane wells. Automatically generated from gas fields when natural gas is extracted from the reservoir. By-product of cracking process during crude-oil refining. Uses Substitute for gasoline in automobiles. Heating and cooking in homes, refrigeration, industrial, agricultural, catering and automobile fuel. Environmental effects Releases lesser greenhouse gas. Releases CO2 which is a greenhouse gas but is cleaner when compared to gasoline Properties It is lighter than air and hence disperses quickly in the event of spillage. Highly inflammable. It is heavier than air and on leakage will settle to ground and accumulate in low lying areas. Stored Pressure 200 to 248 bars 1.7 - 7.5 bar Safety Easily disperses, hence risk of ignition is minimized. Since it is difficult to disperse risk of fire is more. Energy Produced 38 MJ/m3 or 10.6 kWh/m3 94 MJ/m3 or 26.1kWh/m3 Safety and Environmental Impact CNG does produce greenhouse gases upon combustion; it is a more environmentally clean alternative to other fossil fuels like gasoline or LPG. CNG is also safer than other fuels in the event of a spill because natural gas, being lighter than air, disperses quickly when released. Storage Little more space need Need Lesser Space For proper Combustion Air to Gas ratio Approximately 10:1 Approximately 25:1 Relative density with air 0.5537:1 1.5219:1 Auto Ignition Temp. 540C 455 to 510C Flammability Range 5-15% 2-9.5% Auto Mileage Same number of Mileage of gasoline About 28% fewer mileage than of gasoline Carbon Emission (H:C>4:1)Lesser carbon Emission than any other fossil Fuel (H:C>8:3/10:4) cleaner fossil fuel than gasoline & diesel
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    May. 6, 2018
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    Jun. 4, 2017
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    Jan. 5, 2017

Comparison between CNG & LPG

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