In an ammonia absorption refrigeration system, which ammonia form is absorbed by aqua?

In an ammonia absorption refrigeration system, the form of ammonia that is absorbed by aqua (water) is vaporized ammonia. This process occurs when vaporized ammonia is combined with water in the absorber, where the ammonia gas dissolves in the water to form a concentrated ammonia solution.

This absorption process is essential for the operation of the absorption refrigeration cycle, as it allows the system to maintain its refrigeration effects. Once the vaporized ammonia is absorbed, the concentrated ammonia solution is then pumped to the generator, where heat is applied to drive off the ammonia gas, completing the cycle.

The other forms of ammonia, such as liquid ammonia, condensed ammonia, and solid ammonia, do not participate in the absorption process the same way vaporized ammonia does. Liquid and condensed ammonia refers to ammonia that is not in a gaseous state, and solid ammonia is not typically a factor in absorption refrigeration systems, which rely on the absorption of gaseous ammonia to function efficiently.