Which lubricant is recognized as a promising new option for refrigerants?

Polyvinylether is recognized as a promising new lubricant option for refrigerants due to its unique properties that enhance performance in refrigeration systems. It offers superior thermal stability and chemical compatibility with a wider range of refrigerants compared to traditional lubricants. This is important because as refrigerants evolve, particularly with the move towards low-global warming potential (GWP) alternatives, the lubricants used must also provide effective lubrication while maintaining the integrity of the system components.

Additionally, polyvinylether has a lower tendency to form sludge or polymerize, which helps to minimize system wear and maintain efficiency over time. The ability to maintain efficiency is crucial in modern HVAC systems, where energy consumption and environmental impact are prioritized.

In contrast, other lubricants like mineral oil and polyester are more commonly used but may not perform as well with new refrigerants, particularly those that are less polar. Silicone oil can offer benefits such as excellent thermal stability, but it often lacks the required compatibility with certain refrigerants. Therefore, the properties of polyvinylether make it a favorable choice in the context of evolving refrigerant technologies and the need for efficient and reliable HVAC systems.