9. Conclusion

The use of refrigerant fluids is set to grow as a result of stricter regulations on refrigerants, which will force a reduction in the quantities of fluids used in refrigeration systems, and an increase in the use of indirect refrigeration systems.

The use of two-phase frigoporteurs (CO ₂ and grout) should develop to the detriment of solutions with single-phase frigoporteurs.

At the same time, a search for greater energy efficiency in refrigeration plants is expected for obvious reasons of reducing energy consumption and associated CO ₂ emissions into the atmosphere.

These two requirements are contradictory, as indirect cooling systems – with additional exchangers – generate higher energy consumption. The choice of refrigerant...