Air Cycle Technology is based on the heating capability of air during compression and cooling down during expansion. Repetition of compression and expansion cycles allows us to reach and maintain ultra-low temperatures down to -110 °C. Formally known as Brayton Cycle.

MIRAI Cold refrigeration machines use natural air as a refrigerant, thus, are eco-friendly and complaint with all international standards and regulations.

MIRAI Cold refrigeration machines, operating in an open cycle, supply cooled air directly to the refrigeration chamber. This is the most efficient way to cool air, due to the fact, that the system operates at low pressure and does not require an evaporator with fans, which greatly increases the overall efficiency. Open cycle refrigeration machines are supplied with an automatic humidity extraction device – a snow catcher.

MIRAI Cold refrigeration machines in open cycle provide efficient cooling and automatic extraction of humidity from the chamber. Making it a perfect solution for various cooling needs, e.g. storage of biomedical (pharmaceutical) materials, premium food (fish, meat, fruit or vegetables) and even whole-body cryotherapy chambers.

MIRAI Cold refrigeration machines, in open cycle, are equipped with a unique humidity extraction device which extracts ice and humidity from the chamber. It prevents build-up of ice inside the chamber, thus eliminating the need for defrosting procedures.

The humidity extraction device acts as a filter on the suction side before entering the machine. The accumulated snow on the filter is then extracted via a motor powered chain drive.

MIRAI Cold refrigeration machines in closed cycle operate as an indirect refrigeration system and are equipped with a heat-exchanger for the secondary cooling medium (e.g. silicone oil).

MIRAI Cold refrigeration machines in closed cycle are designed for cooling of processes in various industries (e.g. freeze-drying/lyophilization and process cooling).

MIRAI Cold refrigeration machines use air bearings, which eliminates the need for oil management systems and allows us to significantly increase reliability and reduce the service needs of our machines.

MIRAI Cold refrigeration machines require regular replacement of air filter in the electric cabinet. Such a replacement may be required once or twice per year, depending on the area of installation.