With all the talk in recent years, and even more so in recent months, regarding refrigerants like CO2 and hydrocarbons (HCs) making inroads in refrigeration equipment, the trends in the ‘R’ of HVACR are even more widespread. Here is an update on some of the more recent developments.
While the number may not be all that familiar, the refrigerant certainly is. R-718 is the designation for water, just as R-290 is for the HC refrigerant propane, and R-134a is for a very familiar hydrofluorocarbon (HFC) refrigerant.