ECO-FRIENDLY REFRIGERANTS

With the increasing awareness of environmental degradation, the production, use and disposal of Chloro Fluoro Carbons (CFCs) and Hydro Chloro Fluoro Carbons (HCFCs) as refrigerants in mechanical refrigeration systems has become a subject of great concern. However, such systems are being developed using more eco-friendly refrigerants, such as

1. Hydrocarbons (HG-290, HC-600a).
2. Ammonia (NH₃)
3. Carbon Dioxide (CO₂)
4. Water (R-718)
5. Air.

Eco-friendly refrigerants are also known as natural refrigerants. The important features and applications of eco-friendlv refrigerants are given in Table 18.7.

Table 18.7 Important features and applications of eco-friendly refrigerants