The primary purpose of a refrigerator is to preserve food and beverages by maintaining a cool temperature, thereby slowing down the growth of bacteria and spoiling processes. Refrigerators work by employing a refrigeration cycle that involves the evaporation and condensation of refrigerant. By removing heat from the interior and dissipating it outside, refrigerators keep perishable items, such as dairy products, meats, fruits, and vegetables, fresh for extended periods. This innovation has significantly enhanced food safety and waste reduction in households and industries alike, allowing for a wider variety of food storage and longer shelf life.