Other Greenhouse Gases
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Other greenhouse gases
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http://www.greenlivingtips.com/ posted a great article on other greenhouse gases other than carbon dioxide to be aware of. One section really caught my eye and that was the section on coolant gasses (Freon). With the warm weather coming and people using air conditioning it's something to be mindful of if you are considering purchasing a new air conditioner, fridge or freezer.
Here's some highlights:
CFC-12 is a type of Chlorofluorocarbon, more accurately Dichlorodifluoromethane, which does not occur in nature. It's an artificially produced greenhouse gas which was used extensively as coolant in refrigerators and air conditioners and was usually sold under the brand name Freon-12. It's manufacture was discontinued in 1995 after it was found to cause terrible damage to the ozone layer. While it has been discontinued, be wary of old appliances such as refrigerators that may still contain freon gas. Call your local waste disposal authority to get advice on how to dispose of it.
It's not only bad for the ozone layer, but HCFC-22 has a GWP over 100 years of 10600!
HCFC-22 is a hydrochlorofluorocarbon, aka Chlorodifluoromethane or R22. It was also sold under a Freon brand name - Freon-22. It's been used mainly in air conditioning applications, but is also being phased out due to environmental concerns, among them its impact as a greenhouse gas. Air conditioning manufacturers will no longer be permitted to produce R22 equipment from 2010. If you're buying an air conditioning system either new or second hand, check that it doesn't use this gas.
HCFC-22 has GWP over 100 years of 1700.