What is used as the absorbent in an Ammonia Absorption System?

In an Ammonia Absorption System, water is used as the absorbent due to its unique properties which facilitate the absorption process. The system operates on the principle that ammonia gas can be absorbed by water, forming a solution of ammonium hydroxide. This ability to absorb ammonia makes water an effective medium for transferring heat in refrigeration and cooling applications.

Water's high specific heat capacity also allows it to carry away considerable amounts of heat, improving the overall efficiency of the system. This combination of absorption capacity and heat transfer efficiency is crucial in refrigeration technology, making water the ideal choice for use as an absorbent in ammonia absorption systems.

Other substances like saltwater, alcohol, or oil do not have the same efficacy for this purpose, as they do not absorb ammonia efficiently or do not participate in the cooling process as effectively as water does.