Príspevok
It’s Getting Hot in Here: Lubricant Considerations for Heat Pumps
DOI: 10.18462/iir.compr.2024.0602
Sekcia: Heat pumps I
Stav prijatia: Abstrakt prijatý
Autori
| Meno | Organizácia | |
|---|---|---|
| Kelsey Carter, Ph.D. | CPI / Lubrizol Corp. |
Abstrakt
Growing global demand for greener heating and cooling technologies is pushing the boundaries of operating conditions for compressors. Particularly in the field of heat pumps, the need for waste heat recovery is requiring equipment to be able to do more in increasingly adverse conditions. Compressor lubricants are essential for preventing mechanical wear during operation. These lubricants have intimate contact with refrigerant gas as it travels through the compressor and are affected by the pressure, temperature, and chemistry of the refrigerant gas selection. As supplied process heat temperatures rise and the push to adopt lower Global Warming Potential (GWP) refrigerants continues, the ability of the lubricant to function changes. This paper will review recent changes in heat pump technology and how those changes affect the performance of the lubricant. Specifically, compressor operating conditions and refrigerant selection will be used to review the operating viscosity, chemical compatibility with compressor componentry, and potential for decomposition of lubricants of various chemical classes (i.e., polyol esters and polyalkylene glycols).
Kľúčové slová
heat pump, low GWP, lubricant, compressor lubricant, HTHP,