Development and research of fluorine containing refrigerants
The development history and direction of refrigerants from the first generation to the fourth-generation are introduced.The properties and synthesis process of HFO-1234yf are emphatically described,which is the most widely used fourth-generation fluorine containing refrigerant.This refrigerant has zero ozone depletion potential(ODP)and extremely low global warming potential(GWP),ecological protection,low toxicity and explosion-proof.It has been promoted and used in developed countries such as Europe and America.