IIR document

A novel analytical accelerated life model to understand refrigerant chemical stability.

Number: pap. n. 264

Author(s) : KUJAK S., SORENSON E.


A new group of refrigerants known as haloolefins which consist of hydrofluoroolefins (HFOs), hydrochlorofluoroolefins (HCFOs) and hydrochloroolefins (HCOs). These new low-GWP refrigerants may have the potential for decreased chemical stability as compared to the highly chemically stable hydrofluorocarbons (HFCs). Previous generations of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) had good product reliability even though there were chemical stability concerns. This paper summarizes the current highly accelerated life test (HALT) methodologies to qualify a new refrigerant for use. The authors will propose a methodology for extrapolating small scale highly accelerated laboratory results to real life HVACR operational conditions using a simple thermodynamic model and climate zone data. The chemical stability of HCFO-1233zd(E) will be compared to demonstrate the effectiveness of the proposed methodology to validate it’s chemical stability for use in chillers. In addition, the chemical stability of HCFC-123 will be used to validate as a baseline of comparison to validate the chemical stability acceptability of R1233zd(E).

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  • Original title: A novel analytical accelerated life model to understand refrigerant chemical stability.
  • Record ID : 30025976
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0264


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