Low temperature storage

With our expertise in the fields of refrigeration, plant construction and project management we have developed a ultra-low temperature storage solutions that meets our values. The demand for cold stores with temperatures below -40°C is growing especially for COVID-19 vaccine on -80°C storage. Therfore we are presenting our efficient, fail-safe, environmentally friendly and safe solution.

 

The advantages at a glance

With our expertise in the fields of refrigeration, plant construction and project management we have developed a ultra-low temperature storage solutions that meets our values. The demand for cold stores with temperatures below -40°C is growing especially for COVID-19 vaccine on -80°C storage. Therfore we are presenting our efficient, fail-safe, environmentally friendly and safe solution.

 

Failsafe

No failure by liquid refrigerant getting in the compressor or underpressue in the system

Flexible

simple construction, continuously adjustable temperature range from -40 ° C to -110 ° C

Safe for people and the environment

low process pressures of 1 barg with only air as refrigerant

Long lasting

Wear-free centrifugal compressor

Low maintenance

no leakage test, compressor with air-bearing

= no wear, no oil

Efficient

Speed controlled,

no evaporator, enegery recovery with expander-turbounit, low spec. surface

Environmentally friendly

Air as refrigerant = no GWP, no ODP, non-toxic and environmentally friendly

Future proof

Air is free, safe and has no regulations

Description:

 

Our cryogenic storage room can stably realize any temperature from -40 ° C to -110 ° C. It is controlled by a
S7 1200 (Siemens) which can be easily integrated in a superordinate system. For the lighting energy-efficient LED's are used. The insulation consists of extremely stable, efficient and low on thermal bridges low-temperature insulation panels with PU foam, integrated vacuum panels and hook fasteners. Optionally we are able to design the storage rooms with an automatic door system, skirting protection, redundancy (N + 1) and with a surrounding steel frame for transport purposes.

 

A highlight is the refrigeration system which, thanks to the Mirai Intex air cycle refrigeration machines, guarantees stable temperatures, needs no oil, uses air as the sole refrigerant, is particularly fail-safe and efficient and needs  very low effort maintenance only. Due to the maximum gauge pressure of 1 bar as well as air as the refrigerant the machine is outstandingly safe. Inside the air cycle refrigeration machine is a de-icing system installed which removes moisture from the air of the cold-storage room and thereby lowers the dew point by up to 20 K. This exceptionally dry air reduces the formation of ice on the refrigerated goods.

 

For more information on the technology visit our air refrigeration page. If you would like to find out more about the energy efficiency check out our ULT-report.

 

 

 

3D model of low-temperature storage room with cold air refrigeration machines (Mirai Intex), air distribution system and moisture extraction device inside the cold room

This principle sketch shows the construction of a low temperature storage room. It is equipped with a sluice, LED's and an open, water-cooled Mirai Intex air cycle refrigeration machine. The system is mounted on a completely surrounding steel frame, which is also suitable for the transport by crane or truck. The storage room is optimized for short delivery times with maximum flexibility.

 

Key data:

  • Storage volume: 39 m³

  • Cooling capacity: up to 5.4 kW

  • Temperature range: -110 ° C - -40 ° C, optimized for -80 ° C storage

  • Delivery time: approx. 10 weeks after technical and commercial clarification

  • Refrigeration machine: MIRAI Intex MC10 O/W

  • Dimensions of usable space (L x W x H): 5.6 x 2.68 x 2.6 m

 

Due to the staggered slucie it is possible despite using e.g. a lifting cart for easy hauling. At the same time energy-efficient LED's illuminate the interior.

The heat exchanger of the refrigeration system is located inside the housing but can also be installed on the outside so that it can be integrated in a pipe system to reduce waste heat entering the room of installation if necessary.

 

 

 

We are ready for your questions and looking forward to your challenge!

Project example

Did you know?

In addition to storage temperature, temperature tolerance, electrical installations and  loading and unloading procedures, the specific surface area has a significant impact on the energy consumption of the storage room. The most stating parameter is the ratio of the storage volume to the external surface (= specific surface). When comparing many, individual refrigerators to one large storage room this factor can lead to a 10 times higher energy consumption.

 

An example is given by comparing the emperor penguin living in Antarctica with an African penguin. The African penguin would freeze to death in the Antarctic in a very short time as its specific surface area is twice as large. On the other hand, the emperor penguin can survive because it only needs half as much energy per body volume for heating his body.

Emperor penguin

 

specific surface

Energy consumption

per body volume

African penguin

 

specific surface

Energy consumption

per body volume

Adress

Karpatenstraße 26, 76227 Karlsruhe

Contacts

Follow us

+49 (0) 1797860704

©2019 by Refolution Industriekälte GmbH