In Athens, Ala., the city and its Gas Department installed a public CNG station on the Interstate 65 Corridor, making it the only public CNG station between Birmingham and Nashville as of February 2014. Chemical Composition of Natural Gas Natural gas is a naturally occurring gas mixture, consisting mainly of methane. Currently Fiat, Opel, Volkswagen, Citroën, Renault, Volvo and Mercedes sell various car models and small trucks that are gasoline/CNG powered. It has been treated and compressed at high pressure (from 200-250 bar at ambient temperature) for advantage storage and transportation due to decrease the gas volume to 200-250 times. Kwale, Nigeria CNG stations was inaugurated by Mr. Abhishek Sharma, the head of marketing (Natural Gas) from NIPCO Gas Limited in 2019. , In Serbia, there are about 20 public CNG refuelling stations as of August 2019. This means that vehicles can be refueled from the natural gas network without extra gas compression, the fuel cylinders can be slimmed down and made of lighter, weaker materials. Several manufacturers (Fiat, Opel/General Motors, Peugeot, Volkswagen, Toyota, Honda and others) sell bi-fuel cars. In Texas, Railroad Commissioner David Porter launched his Texas Natural Gas Initiative in October 2013 to encourage the adoption of natural gas fuel in the transportation and exploration and production sectors.  From 2011, Tartu has five Scania manufactured CNG buses operating its inner-city routes. Georgia Regional Transportation Authority, Massachusetts Bay Transportation Authority, "Pakistan has highest number of CNG vehicles: survey", "Natural Gas Vehicle Statistics: NGV Count - Ranked Numerically as at December 2009", "Liquefied Petroleum Gas (LPG), Liquefied Natural Gas (LNG) and Compressed Natural Gas (CNG)", "2003 GMC K1500 Sierra CNG Conversion in North Olmsted", "Chugging along: After 13 years, Napa Valley Wine Train rolls to a profit - Jim Doyle - November 22, 2002", "Napa Valley Wine Train Tests CNG Locomotive - Tech.Winetrain - May 15, 2008", "The First CNG Train Starts Functioning in Peru - aula Alvarado - June 21, 2005", "Table 6. The main difference is that CNG is stored at ambient temperature and high pressure, while LNG is stored at low temperature and nearly ambient pressure. Cochran Boiler | Working, Construction, Diagram, Application. Nanthagopal, K., et al. Authorized shops can do the retrofitting and involves installing a CNG cylinder, plumbing, a CNG injection system and the electronics.  The fuel is stored at similar or greater energy density than CNG. Seagrave J(1), Gigliotti A, McDonald JD, Seilkop SK, Whitney KA, Zielinska B, Mauderly JL.  The various assets of Fuelmaker were subsequently acquired by Fuel Systems Corporation of Santa Ana, California.  Peru had 81,024 NGVs and 94 fueling stations as 2009, but that number is expected to skyrocket as Peru sits on South America's largest gas reserves. Because of high octane number flame speed is higher and it can operate with high compression ratios. Both are stored forms of natural gas. Please update this article to reflect recent events or newly available information. A hydrocarbon is an organic compound of hydrogen and carbon called petroleum. CNG vehicles are becoming more and more popular in the country. The 28 buses running the Gwinnett County Transit local routes run on 100 percent CNG. At 15 cents per gallon equivalent, $3,033,600 of motor fuel tax equates to the sale of 20,224,000 gallon equivalents of natural gas." , CNG's volumetric energy density is estimated at 42 percent of that of liquefied natural gas, because it is not liquefied, and at 25 percent of that of diesel fuel. In California, CNG is used extensively in local city and county fleets, as well as public transportation (city/school buses).  Its Maribor counterpart, Marprom has 19 CNG city buses in their fleet, as of October 2018..  Konya also added 60 buses to its fleet the same year. The first commercial CNG station in Skopje is in the advanced stage of development and was expected to start operation in July 2011.  Conversion centres, which also benefited from the rush for lower running costs, also perform partial conversions to existing road vehicles, allowing them to run on both petrol or diesel and CNG with a cost varying between RM3,500 to RM5,000 for passenger cars.  Conversion has been facilitated by a substantial price differential with liquid fuels, locally produced conversion equipment and a growing CNG-delivery infrastructure. Consultancy and engineering services for the ideal refuelling solution – many years of experience and global expertise in working with compressed natural gas that you can rely on Consultancy Based on your specific technical and commercial circumstances, we will work together with you to develop your ideal CNG refuelling solution. Additionally, at least 14 new refuelling stations are planned in all city municipalities by the end of 2020. In Pakistan in 2012, the federal government announced plans to gradually phase out CNG over a period of approximately three years given natural gas shortages which have been negatively affecting the manufacturing sector. There were 105,000 NGVs in operation in 2000; this figure peaked at 121,000 in 2004, and decreased to 110,000 in 2009. Emissions for most compounds were highest for untreated exhaust emissions and lowest for treated exhaust. This problem is solved in factory-built CNG vehicles that install the cylinders under the body of the vehicle, leaving the trunk free, e.g., Fiat Multipla, New Fiat Panda, Volkswagen Touran Ecofuel, Volkswagen Caddy Ecofuel, Chevy Taxi, which sold in countries such as Peru. It is also used as a source of hydrogen required in the manufacture of fertilizers. Mains gas (natural gas) is delivered through pipelines whilst CNG comes in natural gas bottles.  The use of methane for vehicles, started in the 1930s and has continued off and on until today. In automobiles, houses and factories, CNG is used as a fuel. However, while CNG is much cleaner fuel, the conversion requires a type certificate from the EPA. In Pakistan, the Karachi government under the order of Supreme Court in 2004 made it mandatory for all city buses and auto rickshaws to run on CNG with the intention of reducing air pollution. Only twenty buses of the local Public Transport Company have been fitted to use a mixture of diesel and CNG. CNG fuel systems are sealed, preventing fuel losses from spills or evaporation.  Now, as a result of the industry's steady growth, the cost of such fuel storage cylinders has been brought down to a much more acceptable level. At the end of 2018 there were 11,188 vehicles running with CNG in Belgium. Two in the capital Ljubljana, and one each in Maribor and Jesenice. Its use is also increasing in South America, Europe and North America because of rising gasoline prices. When it is extracted from the ground it may also contain Ethane, Propane, Butane, and Pentane, although most of these are usually stripped out for other specific applications before it is passed along through the pipelines. An initiative, known as Pickens Plan, calls for the expansion of the use of CNG as a standard fuel for heavy vehicles has been recently started by oilman and entrepreneur T. Boone Pickens. Meeting the requirements of a type certificate can cost up to $50,000. Compressed natural gas is a fuel that can be used in place of gasoline, diesel fuel and liquefied petroleum gas (LPG). , In Germany, CNG-generated vehicles are expected to increase to two million units of motor-transport by the year 2020. Several of the planned filling stations are located in the northern parts of the country, which will greatly improve the infrastructure for CNG car users. , Leakage of compressed natural gas into the environment "from well to wheels" is a recognized contributor to climate change.  National car maker Proton considered fitting its Waja, Saga and Persona models with CNG kits from Prins Autogassystemen by the end of 2008, while a local distributor of locally assembled Hyundai cars offers new models with CNG kits. At the beginning of 2015 there were 29 refueling stations in Belgium, all of them in Flanders. Natural Gas is liquefied by compressing it. Compressed natural gas is sometimes mixed with hydrogen (HCNG), which increases the H/C ratio (hydrogen/carbon ratio) of the fuel and gives it a flame speed up to eight times higher than CNG. CNG vehicles are commonly used in South America, where these vehicles are mainly used as taxicabs in main cities of Argentina and Brazil. Personal use of CNG is a small niche market currently, though with current tax incentives and a growing number of public fueling stations available, it is experiencing unprecedented growth. SMART also own a second station on Serangoon North Ave 5 which was set up end of March 2009; The fifth and largest station in the world was opened by the UNION Group in September 2009. However, the cylinders used to store the CNG take up space in the trunk of a car or bed of a pickup truck that has been modified to additionally run on CNG.  AT&T has announced its intention to invest up to $565 million to deploy approximately 15,000 alternative fuel vehicles over a 10-year period through 2018, will use the vans to provide and maintain communications, high-speed Internet and television services for AT&T customers. 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