compressed natural gas as a fuel
TRANSCRIPT
CNG AS A FUELby M.Hashaam
CONTENTS Introduction Preparation Maintenance Properties Advantages Disadvantages Uses Conclusion
INTRODUCTION CNG is an acronym of
compressed natural gas. It is used as a substitute fossil
fuel for gasoline (petrol), diesel, propane.
It is safer than other fuels in the sense that natural gas is lighter than air and disperses quickly when released.
LOGOS OF CNG
PREPARATION It is made by compressing the natural
gas (composed of low molecular mass
hydrocarbons mainly methane) to less than 1% of the volume at standard atmospheric pressure. It is stored in hard cylindrical containers at a pressure of 20-25 MPa.
Natural gas is mostly methane , one carbon atom.
MAINTENANCE Proper training is required for all
maintenance personnel working on CNG vehicles. The oil in a CNG vehicle does not need to be changed as frequently because CNG burns more cleanly than gasoline , producing less deposits in the oil.
PROPERTIES Lighter than Air. Colourless and odourless. Does not catch fire easily. Low Density Non toxic
ADVANTAGES It is cheaper than other fuels
and has more efficiency It is dispersed quickly when
released thus produces less pollution
It releases less carbon dioxide into the atmosphere when burnt
CONTD. CNG powered vehicles have
lower maintenance cost than other hydrocarbon powered vehicles
It increases the life of lubricating oils
DISADVANTAGES CNG tank requires
more storage space.
CNG made engine vehicles are more costly than other fuel engines of the same car.
Contd. CNG filling
stations have limited availability as compared to gasoline.
CNG engine Is low power engine than the gasoline engine.
USES CNG is used in many vehicles like bikes
and cars.
It is also used in commercial vehicles like light duty truck and medium duty trucks like vans , postal vehicles and school buses.
FIRST CNG BIKE AND CAR
Top ten countries with most CNG vehicles
country No. of vehicles in millions Iran 2.86
Pakistan 2.85
Argentina 2.07
Brazil 1.7
India 1.1
Italy 0.78
China 0.61
Colombia 0.36
Uzbekistan 0.31
Thailand 0.30
World Total 14.8
CONCLUSION Based on the previous slides for the
Performance and Emission of compressed natural gas, It is concluded that the compressed natural gas represents a good alternative fuel for engine and therefore must be taken into consideration in the future for transport purpose.