Air cycle refrigerating machine 'MIRAI Cold'


The ‘MIRAI Cold’ refrigerating machine developed by MIRAI INTEX is designed to provide and maintain ultra-low temperatures (from -40°С to -80°С) in cold rooms of any configuration, while operating with fewer costs and minimal ecological impact.

‘MIRAI Cold’ consists of three main units: turbo module (functioning as both compressor and expander), primary cooler (for heat diffusion) and heat exchanger working as a recuperator.

‘MIRAI Cold’ is regulated by an adaptive controller that maintains the required operation mode with fluctuations within ±0.2°C. The controller’s interface is easy to operate and features remote monitoring, as well as other functions.

Technical specifications

Refrigeration cycle Air refrigeration cycle 
Refrigerant Natural air
Temperature range -40°С / -80°С
Refrigerating capacity 8 kW
Energy consumption 14.8 kW
Maximum current 28 А
Motor rotation speed 49,000 rpm
СОР (-60⁰С/-80⁰С) 0.6/0.5 (-60°С)
Noise level 70 dB (50 dB optional)
Maximum operating pressure in the system not more than 0.1 MPa (gauge)
Dimensions (LWH) from 1.70×1.40×1.99 м


Conventional refrigerating systems need to be defrosted occasionally because of ice that forms in the chamber. ‘MIRAI Cold’ ensures a humidity level of 0-2% in the chamber, thus defrosting becomes a thing of the past.

Using natural air as a working fluid reduces maintenance costs because there is no need to refill refrigerants, it minimises human impact on the environment and serves as the safest alternative to conventional systems.

There is no need to refill or change oil and maintain oil system as ‘MIRAI Cold’ does not use any oil. Due to this feature the system is safer, costs less and has a longer service life.

‘MIRAI Cold’ operates at low gauge pressure (not more than 0.1 MPa) and does not include pressure vessels or high-pressure loops, which ensures safety of the system. MIRAI Cold’s refrigerant – natural air – is flame-proof and non-toxic.
Resistance to the ambient temperature from -50°С to +50°С helps to ensure high reliability and operational stability of ‘MIRAI Cold’.
Additional benefits are: low noise level, absence of vibration, compact size and ease of installation.