40 TH ANNIVERSARY 1979 - 2019

Sustainable CO2 Refrigeration

Why use CO² as a refrigerant?

Why CO² Refrigeration

There are several national and international programs that regulate refrigerants, one of those being the European F-gas regulation, which was passed in 2006.
The F-gas rule significantly reduces the amount of fluorocarbons that are sold in the European Union (EU) by dramatically phasing them down.

  • As a result of the Kigali amendment more and more countries are stepping up legislative efforts to limit the use of HFCs (China, India, and other developing country).
  • Upcoming Montreal Protocol meetings will determine funding guidelines for developing countries;
  • USA – how HFCs will be treated remains to be seen
  • California will advance its legislation nevertheless – scientific assessment of possible measures currently ongoing
  • Canada Implementing HFC phase down until 2030 and introduced national carbon tax.
  • New F-gas law introduced in Japan
  • New f-gas legislation introduced in Australia amending the Ozone Protection and Synthetic Greenhouse Gas Management (OPSGGM) Act by adding an HFC phase-down plan

The following properties of R744 make it a relatively safe gas & useful refrigerant:

Chemically stable
CO2 is chemically stable and at the same time, inexpensive to produce
Odorless, non-toxic and naturally occurring in the surroundings
Heavier than air
Heavier than air: will settle at lowest level
Compatible with most materials (non corrosive)
Better refrigeration properties than HFC's
High vapor density (700% compared with R134a @-10°C) and high evaporating enthalphy (125% of R134a @-10°C) the gradient between velocity of vapour and liquid phase is lower compare to HFC’s.
More heat energy is required to evaporate liquid CO2 (liquid sloughing). CO2 has a high volumetric refrigeration capacity (6 times higher than R404A) resulting smaller compressors, components and pipe work.
Low viscosity
Low viscosity in liquid and gas lines (small pressure losses)
High heat transfer coefficients
High heat transfer coefficients and High thermal conductivity:
> operate with 2K higher evaporating temperature Vs. HFC
> operate with small approach on gas cooler and PHE

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Natural gas refrigeration systems are our mission and the main assets of our human resources are enthusiasm, team spirit, initiative, willingness to work hard and result orientation

Commercial Refrigeration

We design and manufacture some of the most complete ranges of "commercial" refrigeration equipment.
Applications range from the smaller systems for convenience stores to large hypermarket systems

Industrial Refrigeration

We design and manufacture some of the most complete ranges of "industrial" refrigeration equipment and industrial chillers.
Our applications are designed for cold rooms for storage and distribution of food products, and for skating rinks and processing plants.

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