Retrofit guidelines for stationary refrigeration converting r-404a/r-507 systems to opteon® xp40 (r-449a) refrigerant
Retrofit Guidelines for Stationary Refrigeration Converting R-404A/R-507 Systems to Opteon® XP40 (R-449A) Refrigerant
R-404A and R-507 were developed as non-ozone depleting hydroflurocarbon (HFC) refrigerants to replace R-502 in low and medium temperature refrigeration applications and have been in use many types of equipment since the 1990’s. Due to existing and potential legislation and regulation related to the direct Global Warming Potential (GWP) of refrigerants, there is increased interest by equipment owners in using lower GWP refrigerant options in order to reduce these systems’ total carbon footprint. Opteon® XP40 is a low GWP hydrofluoroolefin (HFO)-based refrigerant developed to replace R-404A/R-507 in positive displacement, direct expansion low and medium temperature systems.
Opteon® XP40 is the registered trade name for a blend of HFC-32/HFC-125/HFC-134a /HFO-1234yf (24.3/24.7/25.7/25.3 wt. %) with ASHRAE designation R-449A. It is commercially available for both retrofit of existing R-404A/R-507 equipment as well as a suitable replacement option in new equipment. Opteon® XP40 offers improved energy efficiency and environmental properties versus R-404A/R-507, with an AR4 Global Warming Potential (GWP) of 1397 (vs. 3922 for R-404A). Opteon® XP40 refrigerant has a zero Ozone Depletion Potential (ODP).
Using these retrofit guidelines, many R-404A/R-507 systems can be converted to operate using Opteon® XP40 allowing existing equipment to continue to operate safely and efficiently with a greatly reduced environmental impact.
http://www2.dupont.com/Opteon_Stationary/en_GB/assets/downloads/opteon-xp40-retrofit-guidelines.pdf