Low Charge Ammonia Refrigeration System

Abstract

Ammonia is widely preferred refrigerant for large cold storage facilities due to it’s multiple advantages. Ammonia is a natural refrigerant with no Global Warming Potential and Ozone Depletion Potential. From economical point of view ammonia is inexpensive for large size parts than HCFCs. But problem arises with ammonia system when ammonia leakage takes place. Exposure to high concentrations of ammonia in air causes immediate burning of the eyes, nose, throat and respiratory tract and can result in blindness, lung damage or death. Inhalation of lower concentrations can cause coughing, and nose and throat irritation. 5 ppm quantity of ammonia in air is said to be self alarming and more than 1300 ppm quantity is perilous. More over it, ammonia is flammable in ambient air. Hence, the focus is made on reducing the quantity of ammonia in refrigeration systems.