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New Environmental Test Chamber
With CO₂ Refrigerant

With the continuous improvement of global environmental standards, KOMEG has taken the lead in launching environmental test chambers using carbon dioxide (R744) as a refrigerant. CO₂ refrigerant has the environmentally friendly characteristic of a global warming potential (GWP) of less than 1, which fully meets the testing requirements for future sustainable development and is an ideal choice to replace traditional high-GWP refrigerants.

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Adopt Low-GWP CO2 Refrigerants

Why Use a Climate Chamber with CO₂ Refrigerant?

Environmental testing laboratories face increasing pressure to reduce their ecological footprint without compromising precision or reliability. Natural CO₂ refrigerant (R-744) offers a sustainable, future-proof alternative to conventional options—delivering:
  • Global Warming Potential (GWP) = 1
  • Full compliance with the latest European F-Gas Regulations
  • Natural, environmentally benign refrigeration
  • Precise, stable temperature control for continuous testing
KOMEG CO₂ environmental test chambers integrate high-performance simulation with a sustainable refrigeration system—engineered for exceptional reliability, energy efficiency, and environmental responsibility.

Can CO2 Refrigerant Completely Replace Existing Refrigerants?​

The lowest temperature that CO2 refrigerant (R744) can reach is -50℃. For applications requiring lower temperatures, R23 or R469a refrigerants are necessary. 
Until December 31, 2028, environmental simulation equipment operating below -50℃ is permitted to continue using refrigerants with a GWP of 150 or above. R170 has a GWP value between 5 and 6, making it a promising option to replace R23 or R469a in the future for achieving lower temperature requirements.

What Are the Differences in the Design of Environmental Chambers Using CO2 Refrigeration Technology?​

Carbon dioxide operates at higher pressures than traditional refrigerants, necessitating designs that can handle this increased pressure. Accessories need to be upgraded to high-pressure-resistant components and compressors. Copper pipes should be replaced with stainless steel for enhanced durability. Moreover, because high CO2 concentrations can be harmful, it’s crucial to have skilled welders for precise work to minimize leak risks.

Building a Greener Future with CO₂ Refrigeration

At KOMEG, sustainability drives innovation. Our natural CO₂ (R-744) refrigeration technology helps reduce greenhouse gas emissions, improve energy efficiency, and comply with evolving environmental regulations—all while delivering reliable, high-performance environmental testing.

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Understanding CO₂ Refrigerant Test Chambers

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