Low-GWP refrigeration using carbon dioxide
CO₂ is fast becoming the preferred refrigerant in Food Retail applications and Danfoss is leading the way towards the adoption of CO₂. With the implementation of refrigerant regulations like the Kigali amendment to the Montreal Protocol (Global) and F-gas regulative (Europe), the quest for alternative solutions is accelerating even further and CO₂ is now recognized as the most viable and efficient solution among natural refrigerants in Food Retail applications.
Danfoss has pioneered CO₂ technologies for both trans-critical and sub-critical systems for more than ten years and has gained valuable experience from thousands of installations all over the world. The many installations have proved that CO₂ can be applied in supermarkets enabling both environmentally friendly and energy saving systems in all types of stores.
Why choose CO₂ as refrigerant?
Today, CO2 has proved itself as a highly reliable and cost effective refrigerant in all climates. Take a look at the CO2 infographic to learn more about all the benefits.
Features and benefits
One solution across all climates
Lowest possible Global Warming Potential (GWP)
Smart solutions for high system efficiency
Proven with more than 10,000 trans-critical CO2 systems worldwide
Industry leading application support and guidance to choose the best solution
Discover the opportunities of CO₂ refrigeration
Danfoss leads the development of solutions and components for CO₂ refrigeration and offers a wide range of products specifically designed for CO₂ transcritical systems.
Related products
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CTR 3-way heat reclaim valve is designed to allow full proportional control of the surplus heat from compressor pack into the heat exchanger of transcritical heat reclaim solutions, securing availability of heat and hot water. The CTR valve prevents pressure peaks eliminating costly system down-time and the risk of insufficient heat supply for store heating and hot water, regardless of installation size.
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The CCMT is an electric operated valve designed specifically for operation in CO2 systems. The valve is capable of functioning either as an expansion valve, as a pressure regulator for the gas cooler or as a gas bypass valve with back-pressure regulation in trans-critical or subcritical applications.
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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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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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The system manager is the key component of the intelligent Danfoss ADAP-KOOL® refrigeration system for food retail.
Related applications
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Your refrigeration system is the natural place to look for energy efficiency gains. To unlock that potential, you need a controller, expansion valve, and high accuracy sensors that are smart enough to make the technology work together—and a system manager that can help you see and control the bigger picture.
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The Heat Recovery Unit (HRU) is designed to recover the waste heat from C02 refrigeration installations. Recovered heat can be used for own heating purposes or returned to a District Heating Utility network.
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Align your heating, ventilation, air conditioning, and refrigeration systems, to save money, safeguard stock, and reduce your environmental impact. Integrated solutions unlock the full potential of each application and increases the efficiency of the entire system.
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Connecting your refrigeration system to the cloud offers a world of possibilities to save money and improve food safety. Remote monitoring and management make it easy to check and triage system alarm.
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Energy cost is one of the biggest expenses in the daily operation of your supermarkets. Therefore, retailers increasingly look to enhance the energy efficiency within the stores.
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The Smart Store solution enhances food safety and brings down the energy bill by integrated and smart control of refrigeration, HVAC, lighting and other applications.
Learning
Articles
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Danfoss has pioneered CO₂ refrigeration systems for more than 10 years. Learn more about our CO₂ refrigeration solutions for supermarkets here.
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The Heat Recovery Unit (HRU) is designed to recover the waste heat from C02 refrigeration installations. Recovered heat can be used for own heating purposes or returned to a District Heating Utility network.
Case studies
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Globus had an ambitious target: to open the new 25,000 square meter hypermarket using transcritical CO2 for its refrigeration and heating. Danfoss helped KrioFrost—a Moscow-based refrigeration equipment producer and installer—to equip Globus’ huge new store in the Moscow suburb of Salaryevo with the company’s first transcritical CO2 booster refrigeration system.
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The supermarket aktiv & irma in Oldenburg, Germany, has pressed the start-button to a solution enabling it to store and generate electricity. The grocery store’s manager calls it a leap forward in energy supply. Danfoss and SMA have helped make it happen. Learn how.
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In Voskresensk, Russian retailer Magnit has opened the first hypermarket in Russia using a transcritical booster refrigeration system with carbon dioxide (CO₂) — an eco-friendly and natural refrigerant.
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The use of transcritical CO₂ refrigeration in warm climates has been a hot topic for years. In Milan, the brand new 10,000 m² Iper market is a pioneer in CO₂ refrigeration using ejector technology to enhance efficiency in temperatures up to 38 °C.
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The F-gas regulation in Europe and similar legislation in other parts of the world push for low-GWP solutions in food retail refrigeration
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Interest in carbon dioxide (CO₂) as a refrigerant in food retail applications has never been more intense than it is today and as such, there has been a lot of discussion with regards to the energy efficiency of these systems. The energy discussion is focused on two factors: climate change performance and financial justification.
News
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The CCMT Light is the latest addition to our growing CO₂ portfolio. The valve is robust, accurate, and easy-to-use, with a focus on stress-free valve installation and field service. It has a high tolerance for dirt and debris, reducing service-related incidences and improving long-term system reliability.
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The new Danfoss ADAP-KOOL® Case Controls Solution for food retail applications drives down cost and takes user friendliness to the next level with a new smartphone app that simplify design, installation, service, and use.
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The annual awards competition honours the most inventive and original products, systems, and technologies showcased at the AHR Expo. This year, Danfoss will receive awards in the program's Cooling, Green Building, and Refrigeration categories.
Software
The truth is Cool(selector®2)
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.
Contact us
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