The Advantages of R290 Refrigerant in CryoDry Freeze Dryers

Trends in Freeze Drying

CryoDry stands as innovator in freeze drying technology. Environmental responsibility is a key focus for us, whilst we are also pushing the boundaries of efficiency. A pivotal aspect is the utilization of R290 refrigerant in our freeze dryers. In this technical article, we explain the intricacies behind CryoDry’s preference for R290 refrigerant and the technical advantages it offers for our freeze-drying equipment.

Understanding R290 Refrigerant

R290, or propane, is a hydrocarbon refrigerant, which has been widely used in household fridges and domestic air conditioning systems over the past years. It is now progressively gaining traction across various other cooling applications due to its eco-friendly attributes. R290 is a natural refrigerant with nil ozone depletion potential (ODP) and a very low global warming potential (GWP). These inherent characteristics make R290 an ideal candidate for adoption by forward-thinking companies like CryoDry.

Technical Advantages of R290 in Freeze Dryers

1. Superior Environmental Profile:

CryoDry’s decision to use R290 in our freeze dryers fundamentally hinges on its impeccable environmental credentials. Unlike synthetic refrigerants such as chlorofluorocarbons (CFCs) and hydrofluorocarbons (HFCs), which invariably contribute to environmental degradation, R290 is a natural refrigerant with zero ODP and an exceptionally low GWP. Consequently, this choice demonstrates our commitment to minimizing our ecological footprint and engaging in the global fight against climate change.

2. Enhanced Thermodynamic Properties:

R290 boasts exceptional thermodynamic properties resulting in outstanding energy efficiency. Within the freeze-drying context, R290 exhibits superior heat transfer capabilities, significantly reducing overall energy consumption. CryoDry customers enjoy lower operational costs while protecting the environment.

3. Safety and Non-Toxicity:

Safety is paramount in any industrial refrigeration system. R290’s non-toxic and non-corrosive characteristics make it a safe refrigerant for freeze dryers. CryoDry’s dedication to safety is further underscored by the rigorous engineering standards and safety protocols applied to our equipment.

It is important to note that R290, whilst flammable, is only used in very small quantities and widely considered safe. Our CD8 freeze dryer uses only about 80g. To put this in perspective – the International Air Transport Association allows air transport of equipment charged with such filling weight.

4. Regulatory Compliance:

Regulatory bodies worldwide are imposing stringent restrictions on refrigerants with elevated GWP. Under the Montreal Protocol from 1987 it was agreed by the UN to phase out substances that deplete the global ozone layer. CryoDry’s adoption of R290 ensures that our freeze dryers remain in full compliance with evolving environmental regulations.

5. Future-Proofing Sustainability:

R290 refrigerant stands as a future-proof choice, harmonizing with the growing global emphasis on sustainability. Other common freeze dryer refrigerants such as R410a and R508b are being phased out across the globe posing questions on future equipment serviceability.


CryoDry’s adoption of R290 refrigerant in our freeze dryers underscores our dedication to technical excellence, environmental stewardship, and adherence to stringent regulatory requirements. By harnessing the technical advantages inherent in R290, CryoDry not only produces cutting-edge freeze-drying equipment but also proactively contributes to a more sustainable and environmentally responsible future. CryoDry’s utilization of R290 sets a technical benchmark in the freeze drying industry.