Refrigerant Solutions - the refrigerant specialists

Low global warming & higher efficiency replacement for R404A

RS-50 has a Global Warming Potential (GWP) of less than one half of R404A together with a higher efficiency which delivers energy savings and a lower contribution to global warming.

RS-50 can be used to replace R404A in both new & existing equipment. Mass flow of RS-50 is lower than R404A so that reducing the opening of the expansion device may be required. No changes to other hardware are necessary. A significant increase in energy efficiency compared to R404A and R507 can be expected. Users will achieve a lower carbon footprint due to the lower direct GWP of the refrigerant & its inherent higher efficiency.

Replacement for R22 in refrigeration applications

RS-50 is a non ozone depleting and non flammable replacement for R22 in medium and low temperature refrigeration applications. The efficiency and cooling capacity of RS-50 provide a close match for R22 in overall system performance. Flow rate is identical to R22 which avoids the need to change or alter existing pipework.

Performance Characteristics

• Global Warming Potential less than half of R404A & R507
• Suitable in OEM & retrofit applications
• ASHRAE safety classification of A1
• Higher Coefficient of Performance than R404A & R507
• Higher capacity than R404A, R507 & R22
• Effective at medium and low temperatures
• Good match for R22 in refrigeration applications
• Mass flow equivalent to R22 and considerably lower than R404A & R507
• Zero Ozone Depletion Potential
• Non flammable & low toxicity

Applications

Because the properties of RS-50 are similar to R404A & R507, it is suitable for use in many of the applications where R404A & R507 are commonly found including supermarket display cases, cold stores, freezers, refrigerated transport, ice machines, cold storage, transportation of foodstuffs, freezer cabinets, beer cellars, freeze dryers & environmental test chambers.

R22 is also used in many of these refrigeration applications where RS-50 can be a suitable replacement.

Lubricants

RS-50 is compatible with the same (POE) lubricants which are commonly used with R404A & R507 so that there is no need to change the oil when converting from R404A & R507 to RS-50. When replacing R22 with RS-50, the lubricant should be changed to a polyol ester oil.

Safety

RS-50 is non flammable under all conditions of fractionation as per ASHRAE Standard 34. The components of RS-50 have been subjected to toxicity tests carried out by Alternative Fluorocarbons Environmental Acceptability Study (AFEAS), and have been declared to be of low toxicity. RS-50 has been designated a refrigerant number of R442A by the ASHRAE with a safety classification of A1.

Servicing

Because RS-50 is a blend, it should be charged into the system in the liquid as opposed to vapour form. There is no need to make hardware changes when converting from R404A & R507 to RS-50 other than reducing the opening of the expansion device. Because RS-50 has a similar flow rate to R22, there is not need to adjust or change the expansion device during a retrofit.

Physical Properties

(1) Bubble point