Chemours R410A replacement to be R452B
USA: The Chemours low GWP refrigerant touted as a competitor to R32 in air conditioners has been provisionally assigned the ASHRAE number R452B.
Final approval and assignment of the ASHRAE classification is expected in June 2016, after Chemours’ Opteon XL55 successfully completed ANSI/ASHRAE flammability and toxicology testing.
Originally developed as DR-55, Opteon XL55 has been recommended for an A2L safety classification. Like R32, it is designed as a replacement for R410A.
A blend of R32, R125 and R1234yf, XL55 has a GWP of 675. It has been said to exhibit lower discharge temperatures and a lower flammability than its rival R32.
Chemours says it believes that XL55 delivers an optimal balance of performance, safety and design compatibility to replace R410A in air conditioning, chiller and heat pump applications.
“The preliminary ASHRAE classification of Opteon XL55 is an exciting next step toward providing the industry with a safe and sustainable low GWP replacement for R-410A,” said Joseph Martinko, global business manager, Opteon products. “Successful completion of the flammability and toxicology testing review means that Opteon XL55 commercialisation for the HVAC market is now on the horizon.”
Chemours initially unveiled Opteon XL55 in a Trane chiller at the International Congress of Refrigeration show in Yokohama, Japan, last year. Trane is said to be planning to have systems available using XL55 within the next twelve months.
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