|Varun Garg | Manager, Product Management – Refrigeration
Emerson Commercial & Residential Solutions
The Copeland™ Hermetic CS compressor line has been extended for use with leading alternative refrigerants. To learn more about this important update, read our recent E360 product spotlight.
Copeland Hermetic CS compressors are commonly used in self-contained and remote walk-in coolers, as well as in ice, soft serve and frozen carbonated beverage applications. Most recently, we’ve updated this industry-standard compressor platform to qualify for use with modern refrigerant alternatives — which include R-407A, R-448A and R-449A — to offer lower glower warming potential (GWP) while providing the same reliable performance.
Found in a wide range of commercial refrigeration applications, R-404A is one of the most commonly used hydrofluorocarbon (HFC) refrigerants. In recent years, HFCs like R-404A have been targeted for phase-down via global, federal and state regulatory efforts to limit the use of high-GWP refrigerants. Throughout the industry, many operators are actively seeking lower-GWP options to help them achieve regulatory compliance and meet corporate sustainability initiatives.
Many factors must be taken into account when considering how to transition to a lower-GWP alternative refrigerant, including service, maintenance and operational requirements. It’s no surprise that many operators are hesitant to transition to an option that will force them to overhaul their current refrigeration architecture or introduce a new compression platform. Emerson is helping those familiar with the Copeland Hermetic CS compressor line move from R-404A to one of these approved alternatives — without introducing new system complexities.
For those seeking to comply with regulatory targets or meet sustainability objectives, Copeland Hermetic CS compressors are qualified to use R-407A, R-448A and R-449A in medium-temperature applications. This will enable significant GWP reductions compared to R-404A.
GWP by refrigerant
Retrofit vs. new: considerations
With these new refrigerant qualifications, operators now have the option to retrofit their legacy Copeland Hermetic CS compressors. It’s important to understand that R-407A, R-448A and R-449A are not considered true “drop-in” replacements.
Even though operators can keep the same compression platform, switching from R-404A to one of these lower-GWP options requires adherence to Emerson’s Refrigerant Changeover Guidelines to help ensure optimum system performance. Expansion valve adjustments, proper lubrication and filter changes must be followed per the application engineering bulletin.
For new applications, this newly qualified Copeland Hermetic CS line of compressors grants operators the flexibility of determining which replacement options are best suited to meet their external regulatory requirements and/or internal sustainability initiatives. Emerson recommends consulting its application engineering bulletin or a certified compression expert to help better understand the performance characteristics of each low-GWP refrigerant option.
To learn specific performance ratings of these new refrigerants, please visit the Copeland Online Product Information (OPI) tool. R-448A and R-449A data will be published in February 2019.