What is high ozone layer?

Stratospheric ozone, also known as the “ozone layer” forms high in the atmosphere, 6-30 miles above the earth’s surface, when intense sunlight causes oxygen molecules (O2) to break up and re-form as ozone molecules (O3).

Why is HFC bad?

HFC emissions cause increased warming of the stratosphere, speeding up the chemical reactions that destroy ozone molecules, and they also decrease ozone levels in the tropics by accelerating the upward movement of ozone-poor air. “HFCs are, in fact, weak ozone-depleting substances.”

What is HFC and HCFC?

HCFC refers to hydrochlorofluorocarbon, while HFC refers to hydrofluorocarbon. The key difference between HCFC and HFC is that HCFC contains chlorine and can cause harm to the ozone layer, whereas HFC is free of chlorine and does not harm the ozone layer.

What do you mean by HFC?

hydrofluorocarbon (HFC), any of several organic compounds composed of hydrogen, fluorine, and carbon. HFCs are produced synthetically and are used primarily as refrigerants.

Is it bad to smell ozone?

When inhaled, ozone can damage the lungs. Relatively low amounts can cause chest pain, coughing, shortness of breath and throat irritation. Exercise during exposure to ozone causes a greater amount of ozone to be inhaled, and increases the risk of harmful respiratory effects.

How do halocarbons destroy ozone?

When the CFCs move upward into the stratosphere, the atmospheric layer just above the troposphere, they are broken down by the ultraviolet radiation from the sun to release free chlorine atoms. The chlorine then reacts with ozone to deplete the ozone layer.

What is replacing HFC’s?

The EPA ruling has legalized the use of hydrocarbons propane, isobutane, and a chemical known as R-441A (a hydrocarbon blend also known as HCR188C) as refrigerants to replace chlorofluorocarbon CFC-12 and hydrochlorofluorocarbon HCFC-22 in household refrigerators, freezers, combination refrigerator-freezers, and …

What is CFC and HCFC refrigerants?

CFCs, or Chlorofluorocarbons, are the original refrigerant. They consist of Carbon, Chlorine, and Fluorine. When you hear someone say ‘Refrigerant,’ they are referring to CFCs. HCFCs, or Hydrochloroflourocarbons, are the close neighbor of CFCs.

What is HCF gas?

Hydrofluorocarbons (HFCs) are man-made organic compounds that contain fluorine and hydrogen atoms, and are the most common type of organofluorine compounds. They are frequently used in air conditioning and as refrigerants; R-134a is one of the most commonly used HFC refrigerants.

When were HFCs created?

HFCS was first marketed in the early 1970s by the Clinton Corn Processing Company, together with the Japanese Agency of Industrial Science and Technology, where the enzyme was discovered in 1965.