Designing Refrigerant–Lubricant Pairs for Reliable Heat Pump Operation with Low-GWP Refrigerants
As heat pumps adopt new low-GWP refrigerants, lubricant selection becomes increasingly critical. This session explores refrigerant trends and provides practical guidance on selecting suitable lubricant chemistries to ensure reliability across evolving operating conditions.
Topic
When & Where
Details
Format:
Lecture
Language:
English
Session description
The rapid growth of heat pumps, combined with the transition to low-GWP refrigerants, is driving significant changes in system design and operating conditions. Emerging refrigerants, including HFOs, HFO blends, hydrocarbons, and CO₂, introduce new challenges for lubrication, requiring a more deliberate approach to refrigerant–lubricant pairing.
This presentation will examine the key refrigerants gaining traction in heat pump applications and explore how their physical and chemical properties influence lubricant selection. Topics will include miscibility behaviour, viscosity characteristics, oil return, and thermal stability, all of which are critical to maintaining reliable compressor operation across a wide range of conditions.&n ...
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