Why cfc as refrigerant

The hole over Antarctica is starting to heal, and predictions are that it can be completely healed by if further damage to it can be averted. There are more environmentally friendly refrigerants available today. There are even developing technologies that hold promise to cool without the use of refrigerants! Stay tuned! And as always, call KJ Thomas Mechanical at if you need heating and air conditioning installation or service. Find Out More. Do You Need a New Furnace? Repair or Replace Your Furnace?

Thinking to Replace? Thank you for your submission. Hydrofluorocarbons HFCs also act to warm the planet. Man-made compounds such as chlorofluorocarbons CFCs , hydrofluorocarbons HCFCs and halons destroy ozone in the upper atmosphere stratosphere.

The stratospheric ozone layer makes life possible by shielding the earth from harmful ultraviolet UV-B rays generated from the sun. Decreased concentration of stratospheric ozone allows increased amounts of UV-B to reach the earth's surface. Stratospheric ozone loss can result in potential harm to human health and the environment, including:. However, their impact on global warming is very large compared with traditional refrigerants. Fluorocarbons Figure 5. However, they are extremely stable, and they have a high GWP cf.

R is an example of a fluorocarbon, and FCs are also present in the mixtures R and R Hydrocarbons are a very limited solution to the environmental problems associated with refrigerants. The use of HCs as refrigerants is confined to Europe, because many other countries elsewhere have banned the use of flammable gas in the presence of the public.

However, the standard IEC This standard has opened the way for some European refrigerator manufacturers to produce household refrigerators with flammable isobutene, Ra. These have been accepted enthusiastically by environmentalists, and have achieved great success in the market. Ammonia, R, is an attractive refrigerant alternative. It has been used in refrigeration systems since and in vapor compression since In terms of its properties, it should be considered a high-class refrigerant.

However, although it is a selfalerting gas, i. This is the main reason why ammonia was withdrawn from applications for use by unskilled people and retained only for industrial applications. It is also quite common in commercial refrigeration, although safety regulations require that it be used with a secondary distribution loop.

Obviously, this secondary loop reduces the efficiency. R soon followed suit and in R was no longer allowed to be used in any new machines. In production and imports of R was cut drastically, and in R will be completely phased out in the United States.

In an effort to solve the issue the Montreal Protocol was formed.