![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
This paper examines the findings of highly accelerated life tests (HALT), conducted according to ASHRAE Standard 97 sealed glass tube methodology for R-123 like, R-134a like and R-410A/R-404A like lower global warming potential (GWP) alternatives. Additionally, possible chemical breakdown pathways are reviewed for the new haloolefin refrigerants. Note, compositions for the following blends are shown as percent by weight. For R-123 like refrigerants, R-1336mzz(Z), R-1336mzz(E), R-514A (74.7% R-1336mzz(Z)/25.3% R-1130(E)), R-1233zd(E), and R-1224yd(Z) were examined with and without lubricants. R-1233zd(E) and R-1224yd(Z) were evaluated with mineral oil and the rest were evaluated with polyalkylene glycol (PAG), polyolester (POE) and polyvinyl ether (PVE) lubricants. For R-134a like refrigerants, R-1234ze(E), R-450A (42% R-134a/58% R-1234ze(E)), R-515B (91.1% R-1234ze(E)/8.9% R-227ea), R-1234yf, R-513A (56% R-1234yf/44% R-134a), and R-516A (77.5% R-1234yf/8.5% R-134a/14.0% R-152a) were examined with and without PAG, POE, and PVE lubricants. For R-410A/R-404A like, R-454B (68.9% R-32/31.1% R-1234yf), R-454C (21.5% R-32/78.5% R-1234yf), R-455A (3.0% R-744/21.5% R-32/75.5% R-1234yf), and R-468A (3.5% R-1132a/21.5% R-32/75.0% R-1234yf) were also examined with PAG, POE and PVE lubricants. R-466A (49% R-32/11.5% R-125/39.5% CF3I) was part of this study but will not be covered since it does not contain a haloolefin component.
Acknowledgments
The authors would like to thank all the companies, people and AHRTI (Air-Conditioning Research Technology Institute with funding support from the US Department of Energy Building Technology Office and the project monitoring committee for the sponsorship and administration of this project. Authors would like to thank Xudong Wang (AHRI), Samuel Yana Motta (previously Honeywell), Ankit Sethi (Honeywell), Jian Sun Blanks (Chemours), Sarah Kim (previously Arkema), Robert Low (Koura), Jim Scott (AGC), Bad Boggess (Emerson), Joe Karnaz (Shrieve) and Ryan Stanton (Idemitsu).
Disclosure statement
The authors declare that there is no conflict of interest regarding the publication of this article.
Additional information
Notes on contributors
Steve Kujak
Stephen “Steve” Kujak, BS Chemistry, Full Member ASHRAE is the Director of Next Generation Refrigerant Research for Trane Technologies, La Crosse, WI.
Morgan Leehey
Morgan Herried Leehey, BS Chemistry, Associate Member ASHRAE is the Refrigerant Chemistry Technology Leader for Trane Technologies Materials & Chemistry Network of Excellence, La Crosse, WI.