What Is The Best Refrigerant for Air Conditioning in 2024?

First, refrigerant R32

R32 is short for difluoromethane, which is a coolant with zero ozone loss potential. It is a gas at room temperature and a colorless transparent liquid under its own pressure. It is easily soluble in oil and difficult to dissolve in water. Boiling point -52 degrees, freezing point -78.4 degrees, critical temperature 59.5 degrees. https://heartfev.com

2. Refrigerant R410A

R410A is a new type of environmentally friendly refrigerant, does not destroy the ozone layer, the working pressure is about 1.6 times that of the ordinary R22 air conditioner, and the cooling (heating) efficiency is higher. Improve air conditioning performance without damaging the ozone layer. R410A new refrigerant is composed of two quasi-azeotrope mixtures, mainly composed of hydrogen, fluorine and carbon (expressed as hfc), with stable, non-toxic, superior performance and other characteristics.

At the same time, because it does not contain chlorine, it will not react with ozone, that is, it will not destroy the ozone layer. In addition, the use of new refrigerant air conditioning in terms of performance will also be improved. R410A is so far the most suitable refrigerant internationally recognized to replace R22, and has been popularized in Europe, the United States, Japan and other countries. https://heartfev.com

Iii. Performance comparison between R32 and R410A

1, thermal physical properties: R32 charge amount can be reduced, only 0.71 times of R410A, R32 system working pressure is higher than R410A, but the maximum increase is not more than 2.6%, which is equivalent to the pressure requirements of R410A system, while R32 system exhaust temperature is higher than R410A maximum increase of 35.3℃, the existing compressor needs to be redesigned.

2, environmental characteristics: ODP value (ozone-depleting potential value) are 0, but R32 GWP value (global warming potential value) moderate, compared with R22 CO2 emission reduction ratio of 77.6%, and R410A is only 2.5%, significantly better than R410A in CO2 emission reduction.

3, safety: R32 and R410A are non-toxic, while R32 is flammable, but in several alternatives to R22 R32, R290, R161, R1234YF, R32 combustion lower limit LFL (ignition lower limit) is the highest, the most difficult to burn, relatively safe.

4, cycle performance: in terms of theoretical cycle performance, the cooling capacity of the R32 system is 12.6% higher than that of R410A, the power consumption is increased by 8.1%, and the comprehensive energy saving is 4.3%. The experimental results also show that the energy efficiency ratio of the refrigeration system using R32 is slightly higher than that of R410A.