Discover why "We Love CO₂"
Yes, you heard it right. At Danfoss Cooling, We Love CO2.
You might think that our devotion is misguided, but we can promise you that our affections are grounded in facts and modern engineering innovations. You see, despite its reputation as a pollutant, CO2 is actually one of the most sustainable refrigerants. Unfortunately, it hasn’t been possible to apply transcritical CO2 systems in all climates – until now. Watch the video to find out why.
Complete Multi Ejector portfolio for all store sizes, CO2 systems and climates
Danfoss offers a full range of Multi Ejectors – covering the needs for all store sizes, CO2 system and climates.
Multi Ejector - High pressure:
The High Pressure Ejector utilizes the energy in the high pressure gas to lift gas from the suction side (MT) moving it to the parallel compressors (IT). This provides a reduction in needed compressor capacity and energy consumption.
- For CO2 refrigeration systems with parallel compression
- The best solution for warm climates
- Optimum for system sizing from 150 kW and up
Multi Ejector - Low Pressure:
The Low Pressure Ejector recovers energy, otherwise lost in expansion, to lift the suction pressure. This reduces the consumption of the compressors.
- For CO2 booster systems
- The best solution for warm climates
- Optimum for system sizing from 40-150 kW
Multi Ejector – Liquid Ejector:
The Liquid Ejector utilizes the energy in the high pressure gas to lift liquid from the suction accumulator. It works in combination with CO2 Adaptive Liquid Management ensuring full evaporator optimization resulting in reduced energy consumption.
- For both CO2 booster systems and systems with parallel compression
- Efficient in both warm and cold climates
- Optimum for system sizing from 40-300 kW
CO₂ Adaptive Liquid Management
The new CO2 Adaptive Liquid Management (CALM) solution from Danfoss extends the portfolio of solutions for CO2 refrigeration in food retail applications. CALM includes the ground-breaking new Liquid Ejector in combination with the innovative case controller algorithm – Adaptive Liquid Control (ALC) – ensuring optimum liquid management. With CALM, the Danfoss CO2 portfolio offers solutions for all system types, store sizes and climates.
Product range
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CTM Multi Ejector SolutionThe Danfoss Multi Ejector Solution™ ensures that transcritical CO₂ applications for retailers become energy efficient in any climate.
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AK-CC 550A
AK-CC 550A is a flexible case/room controller. AK-CC 550A features energy optimization of the complete case and predefined application types for quick adaptation to different cases or cold room setups.
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AK-PC 782A capacity controller
AK-PC 782A is complete regulating units for capacity control of compressors and condensers in a transcritical CO2 booster system with parallel compressor.
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AK-SM 850 system manager
The Danfoss AK-System Manager (AK-SM) is a modern solution for the food retail markets. The AK-SM uses the latest technology to provide the maximum benefit to the end user, both in terms of energy saving optimization, control options and user friendly access.
How to choose the right Multi Ejector Solution™
3 main factors to consider when designing your transcritical CO2 system with a Multi Ejector Solution™.
Software
Coolselector®2: We did complex — you do awesome
Coolselector®2 features unbiased calculations for the selection of refrigeration and air conditioning components based on the user's requirements or based on standard operating conditions.
Support
Case studies
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The Danfoss Multi Ejector range for CO2 refrigeration: design, applications and benefits
Danfoss offers a complete portfolio of gas and liquid ejectors that provide significant benefits in CO2 refrigeration applications. Here we take a closer look at these offerings: the Multi Ejector Low Pressure (LP), the Multi Ejector High Pressure (HP), and the Liquid Ejector (LE). All three ejector products are only available as a complete Multi Ejector Solution™ where the ejector is bundled with the AK-PC 782A pack controller to provide the robust system controls necessary for efficient and reliable operation.
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Selecting the right evaporator injection algorithm makes a world of difference
Danfoss has pioneered two control algorithms that help you achieve this balance. The Minimum Stable Superheat (MSS) algorithm has been an important part of the Danfoss ADAP-KOOL® offering for years and is still the ideal choice for adaptive evaporator control for dry expansion. Now Danfoss introduces the next generation: Adaptive Liquid Control (ALC).
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Intelligent and adaptive control in transcritical CO₂ refrigeration
Intelligent control solutions are important for achieving reliable, optimized operation and realizing financial savings and environmental benefits in your transcritical CO2 refrigeration solution.
