MIRAI Cold is the refrigeration machine for the sustainable generation of Ultra-low temperatures. Our machines are particularly efficient at producing temperatures from -40 ° C to -110 ° C in a single cascade and can control with an accuracy down to 0.5 K and adjust steplessly. The refrigeration system transfers the waste heat directly to cooling water. No additional refrigeration system is required for efficient operation.
The machines can be operated as an open circuit for direct cooling of the air or as an indirect closed system with the inert gas nitrogen. The advantages of the open cycle refrigeration can be found below.
The technical basis of our machines is the air cycle refrigeration technology.
This is a reverse Joule cycle with air as a refrigerant. The air is compressed and expanded after cooling in a series of heat exchangers. By repeating compression and expansion cycles, Ultra-low temperatures can be reached and maintained down to -130 ° C (optional).
|MODEL NAME||MC 23 C/W/T|
|TEMPERATURE RANGE||-40°C to -110°C|
|REFRIGERATION CAPACITY||Up to 12 kw|
|RATED MOTOR POWER||22.5 kw|
|NOISE LEVEL||70 db (60 db optional)|
|NOMINAL CURRENT||45 A|
|MAXIMUM MOTOR ROTATION SPEED||55 000 rpm|
|DIMENSIONS (LxWxH)||190 x 210 x 230 cm|
|WEIGHT||2 500 kg|
All machines are supplied as stand-alone units with required insulation and removable housing cover.
The devices have an integrated control cabinet including a compact controller. Our control system allows the customer to communicate with their control system using the digital protocols ProfiNET, EtherCAT, EtherNET/IP and Powerlink, which provides easy integration. Please specify the type of digital protocol when ordering.
The HMI is a touch display IP66 (front).
For devices with an open air circuit, there is also a specially developed air de-humidification system available. Thus, the refrigeration machines from Mirai meet all legal, environmental and procedural requirements in order to sustainably optimize your application.
MIRAI Cold in an open refrigeration cycle configuration comes with our innovative humidity extraction system, making defrosting a thing of the past.
One of the key features of the technology is, that the turbo-expander is located on the same shaft as the turbo-compressor.
The energy produced during the expansion process is shared by the compressor, thus significantly reducing energy consumption. This feature allows us to reduce energy consumption by 30%, as compared to conventional systems.
The system is available in different configurations, which allows us to react on a wider range of conditions:
Closed refrigeration cycle
The closed circuit can be operated as an indirect system with the inert gas nitrogen (N2). This has the advantage that it shields the area to be cooled and does not react with the substances to be cooled. We are happy to advise you personally with selecting a heat-exchanger for your applications.
In case you believe that you need solution that is more specific please send us detailed information about your conditions through our configurator and we will provide you with the right solution for your needs.
Air as refrigerant
No need to refilling
No vibration or noise
Turbo-module design reduces noise and vibrations
No chemically active substances
No risk of fire
Reduced power consumption up to 30%
No oil in the system due to air bearings
Temperature accuracy of 0,5°C
Frequency inverter allows maintaining 0,5 °C temperature accuracy
Reduced operating costs
Long lifecycle of equipment due to the lack of containing pairs and chemically active substances
Easy service with no special training needed
Real-time monitoring system
Ability to integrate software intervals
Data archiving at specified intervals
Compliance with all international standards and regulations
Climate testing is an important stage of product development because it determines whether the product will maintain its quality in the most extreme environmental conditions. MIRAI Cold products are able to simulate such conditions in the most reliable and safest way possible.
The advantages of properly freeze-dried products are that they do not need refrigeration and can be stored at ambient temperatures. A freeze-dried product retains its original nutritional value, texture, product shape, and taste. It is the fresh product with just the water removed – and nothing added.
MIRAI Cold refrigeration machines are compatible with any industrial process due to safety of the refrigerant, lack of the oil in the system and exceptional reliability of the system.