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Is HFO the last generation of synthetical refrigerants?

Number: No 141

Author(s) : HOFFMANN K., GERRITSEN J., HAFNER A.

Summary

Since 1920 many different synthetical refrigerant have been introduced onto the market. The latest so-called 4th generation synthetical refrigerant is the unsaturated HFC or HFO (Hydrofluoroolefins). They introduced to combat an environmental issue, i.a. the global warming potential of HFC refrigerant, however, they are creating a new challenge. Recent research has shown that there is a build-up of fluoride substances as Trifluoroacetic acid (TFA) in drinking water globally. Some of the HFO molecule are breaking down 100% into trifluoroacetic acid, which can lead to large health cost in the future, due to this environmental pollution. Whereas the heat pump industry working with natural refrigerant are focusing on low charge and no leakages solutions, due to the flammability and toxicity of some of the natural refrigerant, there is very little effort by the industry working with synthetical refrigerant to create similar safe and low charge solutions. Research have shown that all current HFO based system solutions could be replaced by units applying natural refrigerants without significant cost implication. 

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  • Original title: Is HFO the last generation of synthetical refrigerants?
  • Record ID : 30030008
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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