HFO-1234yf (Refrigerant Gas R1234yf)can be used in refrigerator refrigerants, fire extinguishing agents, heat transfer media, propellants, foaming agents, foaming agents, gas eouse media, sterilizing agent carriers, polymer monomers, remove particulate fluids, carrier air flow bodies, abrasive polishes, replacement dryers, electrocirculation working fluids and other fields.
Fluorine refrigerant alternatives, as a hot topic in the world, require that its ozone depletion potential value (ODP) is O, greenhouse effect potential value (GWP) is low, and atmospheric life is as short as possible. The first-generation refrigerant, HCFC dichlorochloromethane (CCl2F2, CFC-12), etc., has been eliminated due to ODP in about 1. As the first generation, 2nd generation transitional refrigerant substitute hydrochlorofluorocarbon chlorofluoromethane (CHClF2, HCFC-22), etc., its ODP 0, etc., is also being phased out. The 2nd generation refrigerant HFCs 1,1,1,2-tetrafluoroethane (CF3CH2F, HFC-134a), widely used in automotive air conditioning, home appliances and industrial refrigeration equipment, but also used in foaming, fire extinguishing, aerosols and cleaning industries.
However, HFC-134a greenhouse effect is relatively high (GWP - 1300), long atmospheric life, a large number of use will cause global warming, has also entered the countdown stage. In the future, which refrigerant will become an alternative to HFC-134a? 1, 1-difluoroe (CH3CHF2, HFC-152a), natural industrial CO2 (R744) and 2,3,3,3-tetrafluoropropylene (CF3CF-CH2, HFO-1234yf) are hot topics.
HF0-1234yf can be used in refrigerator refrigerant, fire extinguishing agent, heat transfer medium, propellant, foaming agent, foaming agent, gas medium, sterilizing agent carrier, polymer monomer, remove particle fluid, carrier air flow body, abrasive polish, replacement dryer, electrocirculation working fluid and other fields.
1 Comparison of the characteristics of several alternative refrigerants HFC-152a has a lower GWP of 140, while ODP is 0. But the HFC-152a is flammable and must be equipped with separate secondary cycle equipment, which obviously means additional costs, if used in the automotive refrigeration industry will increase the quality of the car.
CO2 air conditioning systems have been used in industrial applications, but not in automobiles, mainly because the system requires high pressure (10 times the required pressure is 10 times the required hFC system) and is therefore not an optimal solution. HFO-1234yf as a single man-of-the-art refrigerant, with excellent environmental parameters, GWP s4, ODP s 0, life-long climate performance (LCCP) is lower than HFC-134a, atmospheric decomposition is the same as HFC-134a. And its system performance is better than HFC-134a. If HFO-1234yf(Refrigerant 1234yf) is used instead of HFC-134a refrigerant, car manufacturers can continue to use the original on-board air conditioning (Mobile Air-Conditioning, MAC) system. HFO-1234yf is considered a promising new generation of automotive refrigerant alternatives and is now accepted by automotive manufacturers in Western Europe. Gradual roll-out began in 2011.
The characteristics of CO2, HFC-152a and HFO-1234yf are now compared with the characteristics of HFC-134a, as shown in Table 1:
Table 1 As can be seen from Table 1, the GWP and atmospheric life of HFO-1234yf have significant environmental advantages over other refrigerants that replace HFC-134a. It is not subject to occupational contact, has better ATL and LFL, and its flammability is lower than HFC-152a. And the international authority of independent laboratories (SAE international) hFO-1234yf toxicity and flammability has also been extensively tested, and the organization of global experts conducted an in-depth assessment, and finally concluded that HFO-1234yf although low flammability, but the presence of gasoline needs ( The flammability is similar to HFC-134a) before it can be ignited. Therefore, it is safe to replace HFC-134a with HFO-1234yf in automotive air conditioning.