The main features of R415B are: (1) good environmental performance;

(2) good safety performance. Non-toxic, non-flammable; (3) good thermal

performance. Energy saving, fast cooling; (4) Direct filling performance is

good. It is not necessary to change the components and production lines of

the original R12 or R134a refrigeration system, and it can be directly filled

and the cost of transition is low.

1. Physical and chemical indicators of R415B products

Appearance: colorless and transparent, not turbid.

Moisture: ≤10mg/kg

Acidity (in HCl): ≤0.1mg/kg

Evaporation residue: ≤50mg/kg

2. Main physical parameters of R415B products

R415B is a near azeotropic binary mixture. Table 1 compares the main

technical parameters of R415B with R12 and R134a. It can be seen that

R415B has several characteristics such as high latent heat of vaporization,

high critical temperature, high thermal conductivity and low viscosity. The

refrigeration system of R415B has less filling capacity and more cooling

speed. Fast, heat transfer and flow better.