FAQ



FAQ

Frequently Asked Questions


Find answers to your questions here

  • How does AIR CYCLE technology work?
  • What refrigerant does an AIR CYCLE system use?
  • What is an OPEN CYCLE refrigeration system and how does it work (in a MIRAI Cold machine)?
  • What application is OPEN CYCLE suitable for?
  • How does the humidity extraction device work?
  • What is a CLOSED CYCLE refrigeration system and how does it work (in MIRAI Cold machine)?
  • What application is CLOSED CYCLE suitable for?
  • How is the turbo-module lubricated?
  • What maintenance does a MIRAI Cold machine needs?
How does AIR CYCLE technology work?

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.

What refrigerant does an AIR CYCLE system use?

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

What is an OPEN CYCLE refrigeration system and how does it work (in a MIRAI Cold machine)?

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.

What application is OPEN CYCLE suitable for?

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.

How does the humidity extraction device work?

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.

What is a CLOSED CYCLE refrigeration system and how does it work (in MIRAI Cold machine)?

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).

What application is CLOSED CYCLE suitable for?

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

How is the turbo-module lubricated?

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.

What maintenance does a MIRAI Cold machine needs?

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.


Manufacturing Facility

MIRAI INTEX s.r.o.
Tuřanka 98/A, Brno 627 00
Czech Republic

+420 530 513 661

www.mirai-intex.com

office@mirai-intex.cz

Managing Office

MIRAI INTEX GmbH
Kantgasse 1, Vienna 1010
Austria

+43 720 230 778

www.mirai-intex.com

office@mirai-intex.com

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