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Encyclopedia > Natural gas vehicle
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A Natural gas vehicle or NGV is a vehicle that uses compressed natural gas (CNG) or, less commonly, liquified natural gas (LNG)) as a clean alternative to other automobile fuels. Worldwide, there are roughly 4 million NGVs as of 2004, with the largest number of NGVs in Argentina, Brazil, and Pakistan. They are also popular in Italy and Germany. Vehicles are non-living means of transportation. ... Jump to: navigation, search Compressed Natural Gas (CNG) is a substitute for gasoline or diesel fuel. ... Liquefied natural gas or LNG is natural gas that has been cooled until it becomes liquid, and it is stored in tanks. ... Jump to: navigation, search A small variety of cars, the most popular kind of automobile. ... 2004 is a leap year starting on Thursday of the Gregorian calendar. ...


While existing gasoline-powered vehicles may be converted to CNG, an increasing number of vehicles worldwide are being manufactured to run on CNG. For example, in Klang Valley, Malaysia taxis had converted theirs car to NGV, greatly reducing the cost of operation. However, NGV refill stations are scarce, so cab drivers need to wait in long queues to refill. Klang Valley is the area in central Selangor, Malaysia comprising Kuala Lumpur and its surroundings and suburbs naturally delineated by hilly areas and the Port Klang coastline. ...

Contents


Chemical composition and energy content

Chemical composition

The primary component of natural gas is methane (CH4), the shortest and lightest hydrocarbon molecule. It may also contain heavier gaseous hydrocarbons such as ethane (C2H6), propane (C3H8) and butane (C4H10), as well as other gases, in varying amounts. Hydrogen sulfide (H2S) is a common contaminant, which must be removed prior to most uses. Jump to: navigation, search Natural gas (commonly refered to as gas in many countries, but note that this is also American and Canadian slang for gasoline) is a gaseous fossil fuel consisting primarily of methane. ... Jump to: navigation, search The simplest hydrocarbon, methane, is a gas with a chemical formula of CH4. ... Jump to: navigation, search General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Jump to: navigation, search // Definition In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrogen (H). ... Ethane is a chemical compound with chemical formula C2H6. ... Jump to: navigation, search General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Flash point -104 °C Autoignition temperature 432 °C R/S statement R: 12 S: 9, 16, 33 RTECS number TX2275000 Supplementary data page Structure and properties n, εr, etc. ... Jump to: navigation, search General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Butane, also called n-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. ... Jump to: navigation, search General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Jump to: navigation, search Hydrogen sulfide (hydrogen sulphide in British English), H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Jump to: navigation, search General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Atomic mass 32. ...


Energy content

Combustion of one hundred cubic feet (1 ccf) of commercial quality natural gas typically yields approximately 1 therm (100,000 british thermal units, 30 kWh). One cubic meter yields 38 MJ (10.6 kWh). Natural gas has the highest energy/carbon ratio of any fossil fuel, and thus produces less carbon dioxide per unit of energy. Jump to: navigation, search Combustion or burning is an exothermic reaction between a substance (the fuel) and a gas (the oxidizer), usually O2, to release heat. ... The cubic foot (symbols ft³, cu. ... The therm (symbol thm) is a non-SI unit of heat energy. ... The British thermal unit (BTU or Btu) is a non-metric unit of energy, used in the United States and, to a lesser extent, the UK (where it is generally only used for heating systems). ... The kilowatt-hour (symbol: kW·h) is a unit for measuring energy. ... Jump to: navigation, search The cubic metre (symbol m³) is the SI derived unit of volume. ...


Storage and transport

Transport

The major difficulty in the use of natural gas is transportation. Natural gas pipelines are economical, but are impractical across oceans. Liquefied natural gas (LNG) tankers are also used, but have higher cost and safety problems. Liquefied natural gas or LNG is natural gas that has been cooled until it becomes liquid, and it is stored in tanks. ... Jump to: navigation, search A tank truck or tanker lorry is a motor vehicle designed to carry liquefied loads or cargo on roadways. ...


Storage

Natural gas is often stored as CNG, in hard containers at high pressure.


See also

Jump to: navigation, search This is list of natural gas vehicles. ...

External links

  • About Natural Gas Vehicles
  • International Natural Gas Vehicle Statistics
  • Vehicle Emissions Reduction: CNG

North America

  • What is Compressed Natural Gas?
  • Could CNG work in America?
  • US Department of Energy Consumers' Guide

South Asia

  • Pakistan: Conversion to CNG up 64% from last year
  • Pakistan: Daily Times stories about cheap ($2000 - $3000) CNG cars: [1] [2]
  • India: How New Delhi used CNG to ease pollutionge:Erdgasfahrzeug

  Results from FactBites:
 
Natural gas - Wikipedia, the free encyclopedia (1696 words)
Natural gas (commonly refered to as gas in many countries) is a gaseous fossil fuel consisting primarily of methane.
In many cases, as with oil fields the natural gas which is recovered in the course of recovering petroleum cannot be profitably sold, and is simply burned at the oil field (known as flaring).
Natural gas is supplied to homes where it is used for such purposes as cooking and heating/cooling.
  More results at FactBites »

 
 

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