R-454B, also known by the trademarked names Opteon XL41, Solstice 454B, and Puron Advance, is a zeotropic blend of 68.9 percent difluoromethane (R-32), a hydrofluorocarbon, and 31.1 percent 2,3,3,3-tetrafluoropropene (R-1234yf), a hydrofluoroolefin.[1] Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment.[2][3][4] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088.[2]

R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L. In the United States, it is expected to be packaged in a container that is red or has a red band on the shoulder or top.[2][5][6]

History

The refrigeration industry has been seeking replacements for R-410A because of its high global warming potential. R-454B, formerly known as DL-5A, has been selected by several manufacturers, including Mitsubishi Electric, Carrier, Johnson Controls, and others.[4][7][8][9][10]

R-454B was developed at and is manufactured by Chemours. Carrier first announced introduction of R-454B in ducted residential and light commercial packaged refrigeration and air conditioning products in 2018, with R-454B-based products launches starting in 2023.[11]

R-454B is not the only blend of R-32 and R-1234yf to be proposed as a refrigerant. Other blends include R-454A (35 percent R-32, 65 percent R-1234yf) and R-454C (21.5 percent R-32, 78.5 percent R1234yf). There are also several blends that include a third component.[1]

References

  1. 1 2 "ASHRAE Refrigerant Designations". Retrieved June 27, 2021.
  2. 1 2 3 "Opteon XL41 product information". Retrieved June 27, 2021.
  3. ↑ "Solstice 454B product information". Retrieved June 27, 2021.
  4. 1 2 "Carrier Introduces Puron Advance" (Press release). December 19, 2018.
  5. ↑ "Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program". Federal Register. United States Environmental Protection Agency. 86 (86): 24444–24474. May 6, 2021.
  6. ↑ "AHRI Guideline N: 2017 Guideline for Assignment of Refrigerant Container Colors" (PDF). Retrieved June 27, 2021.
  7. ↑ "Opteon XL41 (R-454B) and Opteon XP10 (R-513A) Refrigerants selected by Mitsubishi Electric Hydronics and IT Cooling Systems SpA (MEHITS) Applications" (Press release). May 27, 2019.
  8. ↑ "Honeywell to offer R454B as alternative to R410A". March 13, 2021.
  9. ↑ "Johnson Controls moves to R454B". May 27, 2021.
  10. ↑ "Behavior of R410A Low GWP Alternative Refrigerants DR-55, DR-5A, and R32 in the Components of a 4-RT RTU DR-5A, and R32 in the Components of a 4-RT RTU". Purdue University Purdu. 2016. Retrieved June 30, 2021.
  11. ↑ "Carrier Introduces Puron Advance™: The Next Generation Refrigerant for Ducted Residential, Light Commercial Products in North America". Carrier Corporation (since 2020 Carrier Global Corporation). 2018-12-19. Retrieved 2021-07-26.
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