CO2 Refrigerant: A Forward-Looking Expertise

Carbon dioxide (CO2, also known as R744 refrigerant in refrigeration) is increasingly becoming the preferred solution alongside ammonia in refrigeration systems. Once limited to commercial projects, it is now expanding into industrial refrigeration and institutional projects worldwide.

Quebec, along with Japan and Scandinavian countries, was a pioneer in adopting CO2 as a natural refrigerant. Today, these regions remain at the forefront of CO2 refrigeration innovation, and the momentum is growing rapidly across the rest of Canada and North America.

The History of CO2 in Refrigeration

The Early Days of CO2 in Refrigeration

Around a hundred years after its initial use, CO2 refrigerant began to gradually replace synthetic refrigerants in the early 2000s. Its ability to offer a more eco-friendly and efficient solution allowed it to gain a foothold in specific sectors, primarily in Europe and Japan.

Adoption in North America and Quebec

Quebec adopted this technology relatively early, and since then, curiosity and enthusiasm have been growing in North America. Today, the market is developing rapidly, and Quebec is now considered a leader, with a high concentration of pilot projects and industrial CO2 refrigeration applications.

A Global Trend

Today, CO2 refrigeration systems are used in large-scale projects worldwide. In just 5 years, the number of installations has grown impressively. The trend continues to grow, with more countries following the example set by the pioneers.

In 2024, the number of food retail stores in North America using transcritical CO2 refrigeration systems was estimated to be 4100 (2800 in USA and 1300 in Canada), over 40% increase from 2023.

In 2024, 17% of industrial sites in North America (870 suits) use transcritical CO2 systems. The 870 industrial sites, which represents a 74% increase from the 498 North American sites in 2023, consists of 380 in the U.S. (up from 208 in 2023) and 490 in Canada (up from 290 in 2023).

Lower total costs becomes a leading driver: reduced operational complexity reduced on-site engineer supervision, and eliminate the need for a specialized, and high-safety refrigeration machinery room.

The Benefits of CO2 Refrigeration

Eco-Friendly and Secure

CO2 is a natural refrigerant, non-toxic and non-flammable. It has a low environmental impact, making it the preferred option, similar to ammonia, for businesses aiming to reduce their carbon footprint.

Versatile Applications

CO2 is suited for a wide range of temperatures and systems, offering versatility in refrigeration and heating via recovery. It can be used in industrial refrigeration, commercial refrigeration, and institutional environments.

Economic
Benefits

CO2 refrigeration systems can help reduce installation and maintenance costs. Over time, they can contribute to lowering operational expenses through their efficiency and versatility.

Increased
Safety

Unlike other refrigerants like ammonia, CO2 is less dangerous in case of a leak. Its non-toxic, non-flammable nature and minimal impact in case of a spill make it a safer choice for occupied buildings.

Why Choose Zero-C for CO2 Refrigeration?

Zero-C is a key player in the design, manufacturing, installation, and maintenance of CO2 refrigeration systems.

With unique expertise and complete control over the entire process, from design to commissioning, Zero-C provides custom solutions that perfectly meet the needs of each client. Our team of engineers and specialized technicians ensures constant follow-up to optimize the performance of the installed systems.

The Future of CO2 Refrigeration

CO2 refrigeration is evolving rapidly. Thanks to ongoing technological advances, CO2 systems can now deliver cooling capacities exceeding 1000 TR, opening the door to larger-scale projects than previously thought possible. Once limited to small and medium installations, CO2 is now a viable option for complex and industrial applications.

Widespread Adoption

CO2 is gaining ground far beyond the commercial sector. Cold storage facilities, food processing plants, and even heavy industrial processes are now leveraging CO2 systems for their energy efficiency and lower maintenance costs. This shift marks a turning point: CO2 is becoming a serious, sustainable alternative capable of meeting the demands of large-scale projects.

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