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Chair: Edward Hessell, Ph.D., Member, Lanxess Solutions US, Inc., Naugatuck, CT
New low global warming potential refrigerants such as hydrofluoro-olefins (HFOs) are inherently less chemically stable than their predecessors such as hydrofluorocarbons and hydrochlorofluorocarbons. It is imperative that their stability in the presence of lubricants, materials of construction and trace contaminants, such as processing chemicals, water and air, be understood to ensure safe and reliable long term operation of HVACR equipment. This seminar will provide an overview of the various tests and studies being conducted to understand the system chemistry of HVACR systems using HFO refrigerants as viewed from the perspective of HVACR system manufacturers, lubricant suppliers, and refrigerant suppliers.
1. System Chemistry Comparison of HFC and Low GWP Alternatives
Julie Majurin, Member, CPI Fluid Engineering, Midland, MI
2. Evaluation of the Chemical Stability of HFC and HFO Alternatives When Applied as R22 Retrofit in Refrigeration Equipment
Hitomi Arimoto, Associate Member, Daikin US Corporation, Washington, DC
3. Chemical Stability of New Low GWP Olefin Based Refrigerants
Stephen Kujak, Member, Trane, Ingersoll Rand, La Crosse, WI
4. What do We Need to Understand About System Chemistry and Low GWP Refrigerants?
Joe Karnaz, DSc, Member, Shrieve Chemical, Houston, TX