Air is the most natural and safest refrigerant there is.


Air is the most natural and safest refrigerant there is.

History of Air Cycle

The first Air cycle machines were developed in the 19th century. In fact, the technology is a reverse Brayton cycle and is also referred to as a Bell Coleman cycle.
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How the system works

Air Cycle Technology

Air cycle technology has been invented for over 100 years and has been used for food storage on board of ships by producers and retailers. The air cycle, as well as nitrogen cycle refrigeration technologies are widely used in air separation plants as a cooling stage to obtain cryogenic cold, to liquify natural gas, as well as aircraft air conditioning systems.

The technology is based on the heating capability of air during compression stage and cooling down during the expansion process. Repeating of compression and expansion cycles allows us to reach and maintain ultralow temperatures down to – 110 °C.

The Compressor consumes energy generated from the electric motor and the expander. Thus, we are able to use the power of the machine more efficiently. All the parts of turbo-module are designed, optimized and manufactured in-house.

Advantages of the system

Air cycle systems have a lot of advantages, and the main one is that it uses air as a refrigerant, therefore it is environmentally neutral. In addition, air cycle equipment is extremely reliable and durable, which helps to reduce maintenance costs and ensures life-long usage without the decline in performance, unlike vapor compression cycle equipment.

A unique feature of the technology is that it can produce useful heat and can be integrated into the heat management system of the building and produce additional heating.

A key technological feature is that the turboexpander and compressor are located on the same shaft. The energy produced during the expansion process is transferred through the shaft to the compressor, which allows to reduce energy consumption up to 30%. As a result of high energy efficiency and low service needs of the machine the user will benefit from reduction of costs of ownership.

Our machines use air bearings, thus eliminating the need for the use of oils, and ensures a safe and worry less experience to our clients.

Freon free

Environmentally friendly, no hazardous refrigerants

High Energy Efficiency

Capitalise on energy savings

Oil free

No risk of fire – no servicing expenses


Running at low gauge pressure – no risk of explosion

Take a look on how the system works


Get more information about Air Cycle Technology implemented in our machine MIRAI COLD.

Manufacturing Facility

Tuřanka 98/A, Brno 627 00
Czech Republic

+420 530 513 661

Managing Office

Kantgasse 1, Vienna 1010

+43 720 230 778

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