Briton Refrigerant R32 – (Difluoromethane)
Briton Refrigerant R32 is also known as difluoromethane and belongs to the HFC family of refrigerant. This gas is poised to replace the other gaseous such as R-410A and R-407C as the preferred gas due to its lower Global Warming Potential. Its chemical formula is CH2F2.
Although there are various types of refrigerants, Briton R-32 is a new refrigerant currently receiving the most interest.
Because R-32 efficiently conveys heat, it can reduce electricity consumption up to approximately 10% compared to that of air conditioners using refrigerant R-22. Furthermore, compared to the refrigerants widely used today such as R-22 and R-410A, R-32 has a global warming potential (GWP) that is one-third lower and is remarkable for its low environmental impact.
Difluoromethane in a zeotropic (50/50 mass%) mixture with pentafluoroethane (R-125) is known as R-410A, a common replacement for various chlorofluorocarbons in new refrigerant systems, especially for air-conditioning. The zeotropic mix of difluoromethane with pentafluoroethane (R-125) and tetrafluoroethane (R-134a) is known as R-407A through R-407E depending on the composition. Likewise the azeotropic (48.2/51.8 mass%) mixture with chlorotrifluoromethane (R13).
Difluoromethane is currently used in residential and commercial air-conditioners as a substitute for R-410A. In order to reduce the residual risk associated with its mild flammability, this molecule should be applied in heat transfer equipment with low refrigerant charge such as brazed plate heat exchangers (BPHE), or shell and tube heat exchangers and tube and plate heat exchangers with tube of small diameter. Many applications confirmed that difluoromethane exhibits heat transfer coefficients higher than those of R-410A under the same operating conditions but also higher frictional pressure drops.
Downloads
Download Briton Refrigerant R32 Gas Material Safety Data Sheet (MSDS).
| General Characteristics | Material Safety Data Sheet (MSDS) |
|---|---|
Download  | Download |
Physical Properties
Physical Properties of Briton Refrigerant R32 (Difluoromethane)
| Property | S.I. Units | Value |
|---|---|---|
| Molecular Weight | kg/kmol | 52.02 |
| Critical Temperature | °C | 78.11 |
| Critical Pressure | bara | 57.82 |
| Critical Density | kg/m3 | 424.00 |
| Normal Boiling Point | °C | -51.651 |
| Latent Heat of Vapourisation at Atmospheric Pressure | kJ/kg | 381.86 |
| Saturated Vapour Density at Atmospheric Pressure | kg/m3 | 2.9879 |
| Liquid Vapour Pressure @25°C | bara | 16.896 |
| Coefficient of Volumetric Thermal Expansion for Saturated Liquid at 25°C | °C-1 | 0.00465 |
| Speed of Sound* for Saturated Vapour at 25°C | m/s | 203.72 |
| Adiabatic Exponent* for Saturated Vapour at 25°C | 1.68 | |
| Latent Heat of Vapourisation at 25°C | kJ/kg | 270.910 |
| Saturated Vapour Density at 25°C | kg/m3 | 47.339 |
| Saturated Vapour Density at 0°C | kg/m3 | 22.091 |