COMPRESSORS
benefits from an environmental point of view, with an ODP of zero and a GWP of 1. Non- toxic and non-flammable, it also has beneficial thermophysical properties, including an excellent heat transferral coefficient, reduced sensitivity to losses in pressure and an extremely low viscosity. Systems running on CO2 offer high performance levels thanks to a better thermal exchange than R404A, reduced pumping power when CO2 is used as secondary fluid and the possibility to operate with a very low condensation pressure, mainly in cold climatic conditions. These characteristics ensure that CO2 installations are more efficient than those running on HFC. In addition, the efficiency of the entire R744 system can be improved, if the application allows, thanks to thermal recovery of heat for use in heating. Frascold markets a complete range of compressors for subcritical and transcritical CO2 systems, a field in which it has years of experience. The range is growing constantly to meet the latest demands in terms of industrial and commercial refrigeration and heat pumps. Frascold solutions boast a minimum oil drag, thanks to an exclusive piston design, characterised by three sealing rings and a fourth oil scraper ring, to guarantee
maximum reliability and efficiency. Lastly, these compressors are distinguished by their low vibration level, for smoother running and minimum noise levels.
The main advantages of hfos International regulations have stimulated the search for alternative coolants with similar capacity, energy consumption and thermodynamic characteristics (like the compressor delivery temperature) to the gases currently used most on the market, but with a significantly reduced GWP. In this sense, HFOs too are sustainable solutions in the HFC elimination process. They perfectly combine cost reduction, performance, low carbon footprint and safety, offering outstanding total cost of ownership. Thanks to their minimal direct and indirect emissions they are extremely efficient and guarantee considerable savings in terms of running costs. They also ensure easy integration in the case of retrofit or new installations, avoiding investments for the ex novo introduction of systems with other technologies, reducing training requirements for engineers and fitters. Lastly, they are distinguished by low levels of toxicity and flammability, making
them suitable for all kinds of applications. Frascold works in partnership with the leading players in the sector and carries out tests and pilot projects with a variety of new options from among the cutting-edge synthetic coolants, simultaneously verifying the need for upgrades to the components and oils used. “Frascold flanks its customers in tackling the
challenges posed by international measures, combining its vast range of semi-hermetic, piston and screw compressors with training programmes and an excellent advisory service. A proactive approach, to raise awareness on the market and accompany the players in the sector in the selection of the best combination between Frascold’s high-performance solutions and the cooling gas best suited to each application, in observance of all the criteria mentioned above.” declares Livio Calabrese, Sales & Marketing Director of Frascold, who adds “Special attention should be focused today on natural coolants and HFOs: thanks to their numerous benefits, they ensure the respect of the limits indicated by the Kigali Amendment, by the F-gas Regulation and by the carbon tax applicable in various countries in compliance with the European Ecodesign directive.”
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www.acr-news.com
November 2020 25
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