What is the GWP reference used in evaluating refrigerants?

What is the GWP reference used in evaluating refrigerants?

• A. Global Warming Potential is measured relative to CO2 over 100 years.
• B. It is based on methane's warming potential over 50 years.
• C. It measures ozone depletion potential only.
• D. It reflects the energy efficiency rating of the refrigerant.

Answer: (A)

Global Warming Potential is measured relative to carbon dioxide over a 100-year time frame. In evaluating refrigerants, CO2 is the baseline with a GWP of 1, and other gases are given GWP values based on how much heat they trap over that 100-year horizon compared to CO2. This makes it possible to compare the long-term warming impact per unit mass of different refrigerants. It’s not about methane’s warming potential, not about ozone depletion potential, and not about energy efficiency ratings—those are different concepts.

Global Warming Potential is measured relative to carbon dioxide over a 100-year time frame. In evaluating refrigerants, CO2 is the baseline with a GWP of 1, and other gases are given GWP values based on how much heat they trap over that 100-year horizon compared to CO2. This makes it possible to compare the long-term warming impact per unit mass of different refrigerants. It’s not about methane’s warming potential, not about ozone depletion potential, and not about energy efficiency ratings—those are different concepts.