Liquefied Petroleum and Natural Gases

Liquefied petroleum gases are propane with an HHV of 2,522 Btu/cf (93,976 kJ/m3), butane with an HHV of 3,260 Btu/cf (121,476 kJ/m3), or a mixture of the two. These fuel gases are obtained from natural gas or produced as a by-product from oil refining. In the refinement of wet, wellhead gas, the methane and ethane (and sometimes a small portion of the propane) are used for dry pipeline gas, while most of the propane and butane are used for LP gases. Commercially distributed LP mixtures can be easily liquefied, reduced in volume by moderate pressure, and transported and stored in tanks.

A propane-air mixture can sometimes be used in the same equipment as natural gas without significant burner adjustments. In internal combustion engines, propane is sometimes used as a back-up fuel to natural gas. Both propane and butane are heavier than air, while natural gas is lighter than air. Therefore, special mechanical ventilation precautions must be taken when switching fuels. In many states, liquid propane is prohibited within the confines of a building.

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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