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R-32: New Generation Refrigerant
The new generation refrigerant, R-32, is the most balanced refrigerant in terms of environmental impact, energy efficiency, safety, and cost effectiveness.
Refrigerant is a medium for conveying heat. Air conditioners transfer heat through the circulation of refrigerant between the indoor and outdoor units.
Although there are various types of refrigerants, R-32 is a balanced refrigerant currently receiving attention. R-32’s efficient heat conduction property realises a reduction of electricity consumption by approximately 10% compared to air conditioners using R-22 refrigerant. Furthermore, when compared to the widely used refrigerants such as R-22 and R-410A, R-32 stands out for its significantly lower global warming potential (GWP) (only one-third of the former refrigerants) and remarkable low environmental impact.
As the only manufacturer that develops and manufactures both air conditioners and refrigerants, Daikin launched the world's first residential-use air conditioner using R-32.
Various refrigerants have been used in air conditioning systems up to this point. In light of the growing global awareness and concern for the environment, regulations in line with the Montreal Protocol in 1987 and the Kyoto Protocol in 1997 have been implemented with greater stringency. The industry is now shifting towards the utilisation of refrigerants with lower environmental impact.
Although the mainstream refrigerant R-410A has an ozone depletion potential (ODP) of 0, its global warming potential (GWP) remains an issue. While R-32 also has an ODP of 0, its GWP is only about 1/3 of that of R-410A. Consequently, there has been an increased focus on studying the potential of this promising refrigerant.
However, due to the challenges associated with handling R-32, its utilisation was not feasible until now. Leveraging its expertise as the sole manufacturer that develops and manufactures both air conditioners and refrigerants, Daikin has become the world’s first company to successfully apply R-32 in residential-use air conditioning systems.
* Source: Values of the 100-year global warming potential (GWP) from IPCC Fourth Assessment Report. Comparative 100-year GWP: HFC410A, 2,090; HFC32, 675.
