English
简体中文
Refrigeration systems use refrigerants as working fluids, and the refrigerants charged generally have two forms: liquid and gaseous. Should the refrigerant be in a liquid or gaseous state?
Refrigerants can be divided into 3 categories: single-working substance refrigerants, non-azeotropic mixed refrigerants, and azeotropic mixed refrigerants.
Regardless of whether the single-phase refrigerant is in a gaseous state or a liquid state, the composition inside will not change, so it can be charged in a gaseous state when charging the refrigerant. Although the composition of the azeotropic refrigerant is different because the boiling point is the same, the composition of the gas and liquid is also the same, so it can be filled with gas;
Is the refrigerant liquid or gas?
Due to the different boiling points of non-azeotropic refrigerants, the components of liquid refrigerants and gaseous refrigerants are actually different. At this time, if a gaseous state is added, it will inevitably lead to different components of the refrigerant added. For example, only a certain gaseous state is added. Refrigerant, so it can only be added in liquid form.
That is to say, the liquid must be added to non-azeotropic refrigerants, and all non-azeotropic refrigerants start with R4. This kind of liquid needs to be added. Common non-azeotropic refrigerants are: R401A, R403B, R404A, R406A, R407A , R407B, R407C, R408A, R409A, Refrigerant R410, R41A. As for other common refrigerants, such as R134a, R22, R23, R290, R32, R500, and R600a, adding gas or liquid will not affect the composition of the refrigerant. In addition, it should be noted and emphasized that the non-azeotropic refrigerant must be in a liquid state.
浙公网安备 33108202000552号