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 systems 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 40-450 kW
Multi Ejector – Combi HP/LE:
The Combi HP/LE combines benefit of the High Pressure Ejector and the Liquid Ejector, and giving you a complete solution with only one welding point needed during installation – making it even easier to get the benefits of CO₂.
- For CO₂ refrigeration systems with parallel compression
- The best solution for warm climates
- Optimum for system sizing from (40 to 105 kW)
Multi Ejector Solution – now with an extended family
The Multi Ejector family have recently been extended with 6 new types making it even easier to find a perfect fit for every store and system around the world.
The Danfoss family of Multi Ejectors now consist of the following members:
- High Pressure – 3 types (150 kW and up)
- Low Pressure – 2 types (40-150 kW)
- Liquid Ejector – 5 types (40- 450 kW)
- Combi HP/LE – 3 types (40 to 105 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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The Danfoss Multi Ejector Solution™ ensures that transcritical CO₂ applications for retailers become energy efficient in any climate.
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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.
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AK-PC 782A is complete regulating units for capacity control of compressors and condensers in a transcritical CO2 booster system with parallel compressor.
How to choose the right Multi Ejector Solution™
There are three main factors to consider when designing your transcritical CO2 system with a Multi Ejector Solution™.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Brochure | A complete portfolio of CO₂ refrigeration solutions | Polish | Poland | 27 Jun, 2023 | 16.7 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions | Spanish, Castilian | Spain | 09 Jan, 2024 | 25.4 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions | Italian | Italy | 12 Dec, 2023 | 16.5 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | German | Multiple | 14 Jun, 2023 | 11.7 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | French | France | 04 Aug, 2022 | 11.7 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | English | Multiple | 19 Apr, 2024 | 15.9 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | French | Multiple | 03 Jul, 2018 | 3.4 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | Ukrainian | Ukraine | 20 Jun, 2023 | 14.6 MB |
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.
Case studies
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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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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 control solutions are important for achieving reliable, optimized operation and realizing financial savings and environmental
benefits in your transcritical CO2 refrigeration solution.
News
Danfoss is proud to declare: “We love CO₂”, and with the Multi Ejector Solution™ you will too
CO2 is often regarded as the "big problem" when it comes to climate change. While in some regards it is a hazard, in other situations it can be the answer. In fact, when used as a refrigerant, CO2 can make a big difference when it comes to keeping people, products, and our planet cool.