Ammonia is one of the most effective applications, rang […]
Ammonia is one of the most effective applications, ranging from high to low temperatures. With the growing concern about energy consumption, ammonia systems are a safe and sustainable future choice. In general, submerging ammonia systems is 15-20% more efficient than the DX R404A. Recent advances in the combination of NH3 and CO2 have helped to further improve efficiency. The NH3 / CO2 cascade is very effective for low temperature and low temperature applications, whereas the NH3 / CO2 brine system is about 20% more efficient than conventional brine
Ammonia is a toxic refrigerant that is also flammable at some concentrations. This is why care must be taken and all ammonia systems must take into account safety. At the same time, unlike most other refrigerants, it has a characteristic odor that can be detected by humans even at very low concentrations. A warning signal is given even if a slight ammonia leak occurs. The combination of ammonia and carbon dioxide may be a good and effective option if it is necessary to reduce the loading of ammonia.
Ammonia has better heat transfer properties than most chemical refrigerants, so less heat-conducting equipment can be used. So the factory construction costs will be reduced. However, because these characteristics also contribute to the thermodynamic efficiency of the system, it also reduces the operating costs of the system.
In many countries, the cost of ammonia is far below the cost of HFCs. This advantage is even multiplied by the fact that ammonia has a lower density in the liquid phase. In addition, any possible loss of refrigerant will also be reduced because the odor will quickly detect any leakage of ammonia.
Ammonia is not a common refrigerant and is mainly used in industrial refrigeration and heavy commercial applications. Ammonia toxicity, flammability and material compatibility must be taken into account. At the same time, there are a large number of ammonia systems in the world and these challenges have been successfully solved.