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sustainable retailing T
With sustainability continuing to be a high priority, this report from Chemours looks at enhancing efficiency in heat recovery with HFOs.
he use of low-GWP HFOs refrigerants such as Opteon XL20 (R-454C) and Opteon XL40 (R-454A) can allow relevant savings both
in terms of front-end equipment investments and over the useful life of a commercial refrigeration system. More importantly, they can reduce system environmental impact over other low- GWP technologies. Their use can be an important contributor to achieving corporate responsibility targets as the overall system emissions are greatly reduced, while their improved energy efficiency creates long term financial savings. Low-GWP Opteon XL refrigerants present an opportunity. Because there has never been a greater awareness of the need to reduce climate changing emissions, it is widely accepted that the choices we make have lasting implications. Regulations and agreements such as the European F-Gas and the Kigali Amendment to the Montreal Protocol have given impetus to new, innovative solutions surrounding HFC replacement, such as the low-GWP Opteon XL20 and Opteon XL40.
The way forward As this awareness intensifies, technologies such as heat recovery systems, aimed at further optimizing the energy consumption of Refrigeration, Air Conditioning and Heat-Pumps (RACHP) systems needs to become more broadly adopted. The use of low-GWP options, such as Opteon XL20 and Opteon XL40, can provide advantages when recovering residual energy generated by refrigeration systems, as they can facilitate both lower emissions and lower lifecycle costs, by improving system efficiency.
Heat recovery technologies have the potential to further reduce energy consumption and ultimately total CO2
equivalent emissions by capturing the
heat generated during the cooling process. Applied to retail stores, heat recovery systems
can deliver considerable benefits, and with the use of low -GWP Opteon XL refrigerants, they can deliver more – the savings are significant (up to 70%) when compared to a traditional R-404A with
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gas boiler system. Heat recovery technologies with low-GWP Opteon XL refrigerants have also been shown to outperform alternative technologies based on R-744 in hot and moderate climatic conditions. Consequently, the use of Opteon XL refrigerants
can translate into lifecycle cost (LCC) savings of up to 15% compared to traditional solutions.
Versatility and efficiency An independent study considered typical heat recovery technologies (Compressor discharge de- superheating, Partial condensation and air handling unit mounted condensers/gas coolers) using low-GWP Opteon XL and R-744 refrigerants at various operating conditions and in both moderate (Leicester, UK) and hot (Sevilla, Spain) European climates. Emissions reduction targets were set for both climate regions (>64% reduction in UK and >55% reduction in Spain) with 7 of the 9 lowest emissions technologies utilising Opteon XL refrigerants.
The study confirmed the versatility and efficiency of Opteon XL refrigerants for a wide range of Heat
Recovery applications and it found that in both moderate and hot climates Opteon XL20 offers the lowest ten-year LCC (up to 11% lower than the lowest emissions with an R-744 option). Similarly, in both moderate and hot climates Opteon XL 20 produces the lowest ten-year total emissions – up to 13% lower than the R-744 option with the lowest emissions. Even when considering the low energy cost and low energy carbon values achieved in France, Opteon XL20 still offers the lowest ten-year LCC, as well as the lowest ten-year total emissions, at the best value for money. If you want to find out more about how Opteon
XL40 and Opteon XL20 reduce emissions and LCC, you can download from the Chemours website the Powering Up Sustainable Retailing infographic and the upcoming white paper Performance of supermarkets refrigeration systems combined with heat recovery, which will be launched at the 2nd IIR Conference on HFO Refrigerants and Low GWP Blends in June of this year.
www.chemours.com
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