Automotive Air Conditioning The ozone layer

 Automotive
Air Conditioning
The ozone layer

The ozone layer:

Ozone (O ) is formed in upper atmosphere (stratosphere), approximately 10 to 50 km above the earth surface.
This layer acts as a shield that protects the earth's surface from harmful ultra violet radiation coming from the sun.

The chlorine contained in CFC's rise into the ozone layer and destroys the ozone molecule O .
Depletion of the ozone layer can be catastrophic to human life causing problems such as:
- Skin cancer
- Eye cataracts
- Reduced immunity to disease
- Damage to crops
- Reduced aquatic life

Background:

-1974 - It was first recognized that the use of chlorofluorocarbons (CFC's) was potentially having a detrimental effect on the ozone layer.
-1987 - The Montreal protocol was adopted. This protocol called for restrictions on the manufacture
and usage of CFC's to 1986 levels. From 1987 manufacturers could only produce the same
quantities as produced in 1986.
-1990 - A second Montreal protocol meeting was held and recommended a total phaseout of ozone depleting refrigerant by the year 2000.
-2000 - Total phaseout of CFC's.

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