The CO2,
together to ammonia,
is the refrigerant
of the future

Like NH3, CO2 (Carbon dioxide) is a natural refrigerant that is abundant in the air and easy to obtain.

It is neither flammable nor toxic. Because it is odourless and has no flavour it is not harmful to food products.

For people, its presence in the air is only harmful when it displaces oxygen.

This gas can be easily detected with electronic devices even when it is present in very low concentrations. As it is an odourless gas, it cannot be detected by people. As such, safety measures must be implemented when using it.

It works in transcritical (compression above the critical point) or in subcritical (compression under the critical point) processes.

Maximum efficiency at low temperature

Currently, transcritical equipment are restricted to low temperature refrigeration applications.

Subcritical installations require very low condensation temperatures (around -5º) and therefore require an additional refrigeration system.

Like with NH3, we offer reciprocating compressors (pistons) and rotary screw compressors.

The costs for obtaining this gas are very low making it a very affordable refrigerant.

Pay special attention to prolonged down times because the pressure in the stopped circuit (liquid separator and evaporators) can reach high levels.

This gas is especially effective in tunnel freezers which require very low evaporation temperatures (between -35ºC and -45ºC).