Profile Compressed Natural Gas Cylinders is also called as Natural Gas Vehicle (NGV). The natural gas cylinders have various design types based on materials of construction used. Compressed Natural Gas (CNG) is a substitute for gasoline (petrol) or diesel fuel. It is considered to be an environmentally clean alternative to those fuels. It is a gaseous fuel and is a mixture of hydrocarbons mainly Methane (CH4) extracted from natural gas. The absence of carbon and other particulates result in negligible amount of harmful elements in exhaust fumes. It is stored and distributed in hard containers, usually cylinders. For use in Automobiles as fuel, it is compressed to a pressure of 200 to 250 Kg/cm2 to enhance the vehicle on board storage capacity. This natural gas remains clear, odourless, and non corrosive although vehicles can use natural gas as either a liquid or a gas. CNG cylinders are designed for a specified nominal service pressure at a specified temperature essentially a specified density (kg/m3) of fuel. This will result in a given mass of natural gas stored in the fuel container. The actual pressure in the fuel container will vary from the nominal service pressure as the temperature of the fuel in the container varies. Fuelling stations normally fill the cylinder up 125% of nominal service pressure to avoid under charging but this highly depends to ambient temperature. Specifications of the cylinder • Capacity = 18 litres • Outer diameter (D) 232 mm • Length (approx) 735 mm • Weight 34.5 Kgs • Plate thickness 6.1 mm Uses of C.N.G. Cylinder • Motorcycles and three wheelers: Natural gas can be used to fuel almost any kind of vehicle motorcycles and three wheelers, cars, vans & pickups, lift trucks, buses, trucks, trains, boats, even aircraft. • Lift Trucks: Available ex manufacturer in some countries CNG is ideal for lift trucks, due in part to the low emissions of CNG engines and ability to refuel on site. • Buses: Urban buses are one of the most popular uses for natural gas, usually utilizing CNG but occasionally using liquefied natural gas (LNG). • Trucks: Trucks that do lower mileages or that return to a base frequently will often be suited for CNG, while trucks that do higher mileages might be more suited for LNG. • Boats: Boats can make use of CNG or LNG and, while still small in number, are becoming a popular choice for ferries or vessels which operate fixed routes. • Aircraft: Light aircraft in Brazil have been using CNG on an experimental basis. The use of natural gas to fuel aircraft has only been conducted to date on an experimental basis, but the range of experiments conducted shows the flexibility of the fuel. The cost of CNG can be as little as half that of a gallon of gas if you use a home re fuelling device. And at commercial stations, the cost is still less than gasoline. Drivers are not expected to notice a significant difference in performance between a CNG powered vehicle and one fuelled by gasoline. CNG is much cleaner burning than gasoline. Market Scenario CNG market in India is primarily focused on light duty vehicles. So, there is a significant opportunity with the companies to bring their cost effective solutions to the medium and heavy-duty truck and transit bus market, stationary generators of all sizes, and so on. Despite the steady increase in Indias natural gas production, demand has outstripped supply and the country has been a net importer of natural gas since 2004. Indias net imports reached an estimated 429 billion cubic feet (BCF) in 2010. Natural gas presently constitutes about 10 percent of the countries energy basket. Indias hydrocarbon vision statement envisages the share of natural gas to be about 25 percent by 2025. ?