True or False: The thermodynamic properties of HFC-134a are similar to CFC-12.

The correct answer is that the thermodynamic properties of HFC-134a are indeed similar to those of CFC-12. HFC-134a was developed as a replacement for CFC-12 because it provides a similar performance profile in refrigeration systems, including comparable boiling points, pressure-temperature characteristics, and thermal efficiency. Both refrigerants are used in similar applications, which is largely due to their analogous properties that allow for a seamless transition in cooling systems when switching from CFCs to HFCs, while also addressing environmental concerns regarding ozone depletion.

HFC-134a has a much lower ozone depletion potential (ODP) compared to CFC-12, aligning with regulations aimed at reducing substances harmful to the ozone layer. Understanding the shared characteristics of these refrigerants helps technicians effectively utilize HFC-134a in existing systems designed for CFC-12, making it crucial knowledge for the EPA 609 Technician Certification.