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.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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