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About Autogas

It’s Cleaner, Greener and Cheaper. LPG Autogas is by far the most widely available environmentally friendly alternative fuel with over 1400 refuelling sites throughout the UK, most of which are on petrol forecourts. Recent independent tests have also shown that LPG has the best environmental record compared with petrol and diesel.

Drivers and fleet operators save money each year by switching to LPG and this includes cars, vans and taxis whilst benefiting the environment. Driving an LPG vehicle is safe, easy and best of all, much cheaper than driving a petrol or diesel model.

Most petrol engines can be converted and there are currently around 21 million vehicles worldwide with over 10 million in Europe and over 170,000 in the UK running on LPG. They are producing less harmful emissions than those driving petrol or diesel, whilst making significant savings at the pumps.

In the UK, LPG costs around 50 pence per litre cheaper than petrol and diesel. Although the miles per gallon when running on LPG is usually around 20% less than petrol, because it is so much cheaper to buy, significant savings in fuel costs can be made – see how much money you can save by using our Savings Calculator

What is LPG?

LPG or Liquefied Petroleum Gas is extracted alongside natural gas and is also a bi-product of the oil refining process. The primary use in the UK is in the form of propane which is used for autogas as well as heating and cooking in domestic, commercial and agricultural environments. When stored under pressure it becomes a dense liquid.

Liquefied petroleum gas, also called LPG, GPL, LP Gas or simply propane or butane, is a flammable mixture of hydrocarbon gases used as a fuel inheating appliances and vehicles. It is increasingly used as an aerosol propellant and arefrigerant, replacing chlorofluorocarbons in an effort to reduce damage to the ozone layer. When specifically used as a vehicle fuel it is often referred to as autogas.

Varieties of LPG bought and sold include mixes that are primarily propane (C3H8), primarilybutane (C4H10) and, most commonly, mixes including both propane and butane, depending on the season — in winter more propane, in summer more butane[citation needed]. In theUnited States, primarily only two grades of LPG are sold, commercial propane and HD-5. These specifications are published by the Gas Processors Association (GPA)[1] and the American Society of Testing and Materials (ASTM).[2] Propane/butane blends are also listed in these specifications. Propylene, butylenes and various other hydrocarbons are usually also present in small concentrations. HD-5 limits the amount of propylene that can be placed in LPG, and is utilized as an autogas specification. A powerful odorant, ethanethiol, is added so that leaks can be detected easily. The international standard is EN 589. In the United States, tetrahydrothiophene (thiophane) or amyl mercaptan are also approved odorants,[3]although neither is currently being utilized. Major suppliers of LPG in the UK includeAvantiGas, Calor gas and Flogas.

LPG is prepared by refining petroleum or “wet” natural gas, and is almost entirely derived from fossil fuel sources, being manufactured during the refining of petroleum (crude oil), or extracted from petroleum or natural gas streams as they emerge from the ground. It was first produced in 1910 by Dr. Walter Snelling, and the first commercial products appeared in 1912. It currently provides about 3% of all energy consumed, and burns relatively cleanly with no soot and very few sulfur emissions. As it is a gas, it does not pose ground orwater pollution hazards, but it can cause air pollution. LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for fuel oil and 43.5 MJ/kg for premium grade petrol (gasoline).[4] However, its energy density per volume unit of 26 MJ/L is lower than either that of petrol or fuel oil, as its liquid density is lower (about 0.5—0.58, compared to 0.71—0.77 for gasoline).

As its boiling point is below room temperature, LPG will evaporate quickly at normal temperatures and pressures and is usually supplied in pressurised steel vessels. They are typically filled to between 80% and 85% of their capacity to allow for thermal expansionof the contained liquid. The ratio between the volumes of the vaporized gas and the liquefied gas varies depending on composition, pressure, and temperature, but is typically around 250:1. The pressure at which LPG becomes liquid, called its vapour pressure, likewise varies depending on composition and temperature; for example, it is approximately 220 kilopascals (32 psi) for pure butane at20 °C (68 °F), and approximately 2.2 megapascals (320 psi) for pure propane at 55 °C (131 °F). LPG is heavier than air, unlike natural gas, and thus will flow along floors and tend to settle in low spots, such as basements. There are two main dangers from this. The first is a possible explosion if the mixture of LPG and air is right and if there is an ignition source. The second is suffocation due to LPG displacing air, causing a decrease in oxygen concentration. In addition, an odorant is mixed with LPG used for fuel purposes so that leaks can be detected more easily.

Where is LPG Used

LPG is a clean-burning, sustainable and efficient fuel and a vital source of energy for hundreds of thousands of people in the UK. It is a multi-purpose energy with literally hundreds of applications for consumers. It is portable, can be transported, stored and used virtually anywhere in the UK and there are sufficient reserves to last for many decades. LPG also shows lower greenhouse gas emissions than petrol, diesel, and electricity, on an energy-equivalent basis.

Heating

Heating

If your home is not connected to the natural gas main, LPG is the convenient and clean alternative that provides all the benefits of gas which is why it is already used by 150,000 homes in the UK – it can be stored in a tank on your property and brought to you by road delivery. LPG boilers have the added advantage of emitting almost no particulate matter into the air, such as black carbon (also known as soot) which has been found to cause global warming.

Outdoors

Outdoors

LPG is exceptionally versatile and has a wide variety of uses outdoors for both consumers and businesses alike. It is used for patio heaters in domestic gardens as well as pubs and restaurants to outdoor camping equipmnent. It allows you to stay outside even when the sun goes down.

Cooking

Cooking

LPG offers a fuel ideal for cooking as it requires no waiting, no mess, and provides thoroughly cooked food as you control the temperature of the cooking. This makes it an ideal choice for both indoor and outdoors, whether it be in your garden, in the caravan, or for outdoor catering. It is also cleaner than most outdoor cooking alternatives.

Driving

Driving

LPG autogas is the cleanest, greenest and cheapest most widely available alternative fuel for vehicles with over 1400 refueling sites throughout the UK, most of which are on petrol forecourts. Making it the third fuel in the UK. LPG autogas produces less CO2 and harmfull emissions making it a responsible choice for motorists around the UK.

Commercial

Commercial

LPG is widely used for many industrial and agricultural applications such as space and process heating, grain drying, poultry farming, cutting, welding, powering machinery, producing food, water heating, de-frosting, shrink-wrapping, powering industrial ovens, kilns or furnaces, or powering fork-lift trucks in and outside warehouses. Due to its versatility and emission benefits it is an ideal choice.