R450A increases efficiency in CO2 cascade
Cooling Post, March 20, 2016. Image credit: Honeywell
Honeywell is having further success in deploying lower GWP HFO refrigerant blend R450A in combination with CO2 in cascade refrigeration systems.
Covirán worked closely with its Logroño-based specialist partner Systemfrost to develop a solution that would combine best-in-class performance with sustainability. Systemfrost designed a cascade system utilising R450A – an HFO/HFC blend with a GWP of 601, marketed by Honeywell as Solstice N13 – and CO2. It was designed to meet key criteria around energy efficiency, emissions reduction and refrigeration performance.
A blend of 42% R134a and 58% HFO1234ze(E), R450A has a GWP of around 601, less than half that of R134a. The total charge of R450A in the Covirán system is 1,020kg.
[bctt tweet=”The R450A cascade refrigeration system is expected to reduce annual energy consumption by 3+%.”]
The system is expected to reduce annual energy consumption by more than 3% and achieve lower direct carbon dioxide emissions of 60% annual compared to a similar system using R134a, the traditional refrigerant used in such applications.