What is one advantage of using HFO refrigerants?

• A. Higher energy efficiency
• B. Zero ozone depletion potential
• C. Lower cost
• D. No greenhouse gas potential

Answer: (B)

One key advantage of using HFO refrigerants is their zero ozone depletion potential. HFOs, or hydrofluoroolefins, are designed to replace older refrigerants that contribute to ozone layer depletion. Unlike chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), which contain chlorine and can break down ozone molecules in the stratosphere, HFOs do not contain chlorine and thus do not have the same harmful effects on the ozone layer. This characteristic makes them more environmentally friendly and aligns with international agreements aimed at reducing substances that harm the ozone layer, such as the Montreal Protocol.

While some HFOs may have advantages such as improved energy efficiency or lower global warming potential compared to traditional refrigerants, the standout feature of their environmental profile is the zero-ozone depletion potential. This is a crucial factor for industries and applications where compliance with environmental regulations is necessary, necessitating the use of substances that will not further deplete the ozone layer.