Environmental Impacts of Refrigerant

Ozone layer depletion

• resulting in increases in ultra violet radiation
  
  
• increases skin cancers
  
  
• eye problems
  
  
• food production decreases
  
  
• effects human immune system

To Control Emissions

• environmental controls have been placed on ODS such as:
  
  
• class 1 ODS CFC’s new production eliminated January 1 1996
  
  
• Class 2 ODS HCFC’s new production eliminated January 1 2020
  
  
• All refrigerants: Given Ozone Depleting Potential number and global warming potential

Refrigerant Classification

• ASHRAE standard adopted by the B-52 refrigeration code
  
  
• Refrigerants classified as to their toxicity and flammability

Low toxicity Low flammability

Low toxicity Higher flammability

Higher toxicity Low flammability

Higher toxicity Higher flammability