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Thrifty Propane Guarantee - Propane Thrifty

Most people know propane as the fuel in the white container attached to a barbecue grill. But propane has long proven its versatility for heating homes and water, cooking, drying clothes, fueling gas fireplaces and as an alternative fuel for vehicles. However, more propane is used to make petrochemicals- which are the building blocks for plastics, alcohols, fibers and cosmetics, to name a few.

Thrifty Propane Guarantee Propane is bought and stored in a liquid form (LPG), and thus fuel energy can be stored in a relatively small space. Compressed Natural Gas (CNG), largely methane, is another gas used as fuel, but it cannot be liquefied by compression at normal temperatures, as these are well above its critical temperature. It therefore requires very high pressure to be stored as a liquid, which poses the hazard that, in an accident, a CNG tank may burst with great force, or leak rapidly enough to become a self-propelled missile. Therefore, CNG is much less efficient to store, due to the large tank volume required.

Octane rating is a noticeably higher 110. In the United States the propane fueling infrastructure is the most developed of all alternative vehicle fuels. Many converted vehicles have provisions for topping off from "barbecue bottles". Purpose-built vehicles are often in commercially-owned fleets, and have private fueling facilities. A further saving for propane fuel vehicle operators, especially in fleets, is that pilferage is much more difficult than with gasoline or diesel fuels.

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In addition to these two processes, propane demand is met by imports and by using stored inventories. Although imports provide the smallest (about 10%) component of U.S. propane supply, they are vital when consumption exceeds available domestic supplies. Propane is imported by land (via pipeline and rail car from Canada) and by sea (in tankers from such countries as Algeria, Saudi Arabia, Nigeria, Venezuela, and Norway).

Commercially-available "propane" fuel, or LPG, is not pure. Typically in the USA and Canada, it is primarily propane (at least 90%), with the rest mostly butane and propylene (5% maximum), plus odorants. This is the HD-5 standard, (Heavy Duty-5%maximum allowable propylene content) written for internal combustion engines. LPG, when extracted from natural gas, does not contain propylene. LPG, when refined from crude oil does contain propylene. Not all products labelled "propane" conform to this standard. In Mexico, for example, the butane content is much higher.


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