R-507
R-507 is a non-ozone-depleting refrigerant primarily designed to replace R-502 in low and medium-temperature commercial refrigeration applications.
What is R-507?
R-507 (a blend of R-125 and R-143a) is a hydrofluorocarbon (HFC) refrigerant developed as an azeotropic replacement for R-502 in medium and low-temperature refrigeration applications. Renowned for its consistent and efficient cooling properties, R-507 delivers reliable performance in demanding commercial and industrial systems.
R-507 is compatible with synthetic polyolester (POE) lubricants and operates at pressures similar to R-502, simplifying retrofitting in existing systems. While its global warming potential (GWP) is significant compared to newer refrigerants, R-507 remains a dependable and effective choice for applications requiring a non-ozone-depleting alternative with stable thermal properties. It is widely used in supermarkets, food processing facilities, and cold storage systems.
Important Note
Key Properties of R-507
Low Boiling Point
Boils at (1 atm, °F): -52.8, making it efficient for medium and low-temperature refrigeration applications.
Similar Pressure Operation
Operates at slightly higher pressures than R-502, which may require some retrofitting depending on the system.
Similar Energy Efficiency
Offers similar energy efficiency compared to older refrigerants like R-502, but with 0 ODP.
Zero Ozone Depletion
Has an Ozone Depletion Potential (ODP) of 0, making it safer for the environment.
Global Warming Potential
Has a GWP of 3985, which is significant but lower than some alternatives.
Non-Flammable
Classified as A1 (lowest toxicity, no flame propagation) by ASHRAE.
Technical Specifications
Applications and Usage
Residential Systems
- Retrofitted residential air conditioning systems originally designed for R-22
- Limited use in small-scale cooling appliances requiring medium or low-temperature performance
Commercial Applications
- Supermarket refrigeration systems replacing R-502 or R-22
- Packaged rooftop HVAC units retrofitted for medium-temperature cooling
- Beverage display coolers, freezers, and ice machines in commercial environments
Industrial Applications
- Cold storage facilities transitioning from R-502 or R-22
- Food processing refrigeration units requiring reliable medium and low-temperature performance
- Industrial cooling systems supporting manufacturing and logistics operations
Specialized Uses
- Medical-grade refrigeration systems retrofitted from R-22
- Laboratory cooling systems requiring a lower-GWP alternative to R-404A
- Systems needing compliance with modern refrigerant regulations while maintaining efficiency
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