HFO refrigerants are actually unsaturated HFC refrigerants and are widely recognized as the next generation of refrigerants because of their environmental friendliness, cost-effectiveness, and great energy efficiencies.
The function of an oil reservoir, commonly known as an oil trap, is to prevent large oil slugs from forming. This is accomplished by trapping a small amount of oil in the reservoir or trap and gradually returning it to the compressor.
CO2 as a refrigerant has been a part of the refrigeration landscape for close to a decade and continues to gain more and more attention in the states in refrigeration applications. Most recently, CO2 was showcased as a hot topic at the Food Marketing Institute Expo in Chicago.
Refrigeration technicians need to use extreme care when working with torches during the brazing and soldering process. The flames of a torch can easily reach 3,000°F. At this temperature, serious damage can be the result of misuse and carelessness.