What is the global warming potential (GWP) of R1234ze refrigerant?

• A. Lower than zero
• B. Below one
• C. Higher than CO2
• D. Equal to R134a

Answer: (B)

R1234ze refrigerant has a global warming potential (GWP) that is indeed below one, specifically around 0.3. GWP is a measure used to compare the impact of different refrigerants on global warming relative to carbon dioxide (CO2), which has a GWP of one.

A GWP below one indicates that R1234ze has a significantly lower impact on global warming compared to CO2, making it a more environmentally friendly alternative for use in various applications. This low GWP contributes to its acceptance and utilization in efforts to reduce greenhouse gas emissions.

In contrast, options suggesting a GWP lower than zero or higher than CO2 misrepresent the nature of GWP as a comparative measure, while the equality to R134a does not hold, as R134a has a much higher GWP, close to 1430. Thus, understanding the GWP of refrigerants like R1234ze is crucial in regulatory compliance and environmental sustainability in the HVAC industry.