What is a key feature of R1234ze refrigerant?

• A. High global warming potential
• B. Zero ozone depletion potential
• C. Rated lower than CO2 in global warming potential
• D. It is a hydrofluorocarbon (HFC)

Answer: (C)

A key feature of R1234ze refrigerant is that it is rated lower than CO2 in terms of global warming potential. This is significant because refrigerants are reviewed and regulated based on their environmental impact, particularly their potential to contribute to global warming. R1234ze has been developed as a next-generation refrigerant to help reduce the overall carbon footprint associated with refrigeration and air conditioning systems.

By having a lower global warming potential compared to CO2, R1234ze represents a more environmentally friendly alternative to traditional refrigerants, making it beneficial for compliance with regulations aimed at reducing greenhouse gas emissions. The shift to refrigerants like R1234ze aligns with the industry's move towards more sustainable practices and is also a part of the F-Gas regulations aiming to phase down the use of high-GWP substances.

Thus, its classification as having a global warming potential lower than that of CO2 positions R1234ze as a preferred option in applications where environmental impact is a primary concern.