R454C

R454C refrigerant

R454C is a blended refrigerant made from R32, which is classified as an HFC (hydrofluorocarbon), and R1234yf, which is classified as an HFO (hydrofluoroolefin). It was developed as an alternative refrigerant to reduce the greenhouse effect of R404A and R22. When comparing the GWP (Global Warming Potential), R404A has a GWP of 3,920, R22 has a GWP of 1,810, whereas R454C has a significantly lower GWP of 148.

Comparison between R454C and R404A

The refrigerant R454C, developed with the aim of reducing the greenhouse effect of R404A, also shows the following differences when compared to R404A.

Global Warming Potential (GWP)

As previously mentioned, the significant difference between R454C and R404A is their GWP (Global Warming Potential). GWP is a numerical value that indicates the impact of greenhouse gases on global warming, calculated relative to carbon dioxide, which is assigned a value of 1. The GWP of R454C has been reduced to approximately 1/26th of that of R404A. However, since the GWP of R454C is still 148, meaning it has 148 times the greenhouse effect of carbon dioxide, there is a need for refrigerants with even lower GWPs.

Energy efficiency

There is an indicator of energy efficiency called COP (Coefficient of Performance). The higher the COP, the better the energy efficiency. The COP of R404A is considered to be lower compared to other common refrigerants. In contrast, R454C shows a higher COP than R404A. This is because R454C operates at lower pressures, which reduces the load on the compressor.

Flammability

There are also differences between R454C and R404A in terms of flammability. R404A is a non-flammable refrigerant classified as A1. In contrast, R454C is mildly flammable and classified as A2L. Therefore, when using R454C, measures for leak prevention and detection are necessary.

Compatibility with R404A

R454C is a refrigerant that can be relatively easily adapted to existing R404A and R22 systems. While some system modifications and adjustments are necessary, they often do not require extensive changes.

Future Prospects of R454C

R454C is expected to become increasingly widespread in the future as a promising option for reducing environmental impact and improving energy efficiency. With the strengthening of regulations, market demand, and technological advancements, the use of low-GWP refrigerants, including R454C, is anticipated to expand. However, it is crucial to appropriately design systems and implement safety measures.