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Hydrofluorocarbons, Sulphur hexafluoride, Perfluorocarbons |
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The HFC's, SF6, and PFCs make up 2.1% of the total greenhouse gas emissions. While they are not considered major greenhouse gases in they still can cause a threat becuase of potency and lifespan. |
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Hydrofluorocarbons? What in the heck is an HFC? Hydrofluorocarbons are compounds containing hyrdogen, fluorine, and carbon. They are used in pharmesutical aresols, firefighting agents, airconditioners, and foam blowing agents |
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Sulphur hexafluoride (SF6) is made of one atom of sulphur and six fluorides. It is a colorless odorless gas that is soluable in water. It is generally transported in the liquified gas state. SF6 is one of the most potent greenhouse gases, it has a global warming potential of 23,900. However even with it's potentcy it takes up a small volume of our atmsopshere and as such does not contribute heavily to global warming. If SF6 is inhaled it drops your voice an octave because sound travels slower in SF6 than it does in air. |
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Inhaling SF6 usually isn't a good idea because it displaces the oxygen that you need to breath and in large amounts it can kill you. It most commonly is used in high voltage breakers as an insulator because it doesn't conduct electricity, is gaseous at low temperatures, and non corrosive.It usually gets leaked into the ozone by escaping through the seals in older equipment, and during equipment inspections . |
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Perfluorocarbons are made of of carbon fluorine and/or sulphur molecules. They are one of the worst greenhouse gases to get into the atmosphere, because unlike all the other greenhouse gases, which will slowly dissovle in a number of years, PFC's stay in the atmosphere for 50,000 years! PFCs are used in the making of artificial blood and are a biproduct of aluminum smelting process. They aren't a prominent greenhouse gas but can cause problems because of the legnth of time they stay in the atmosphere. |
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