Abstract
Mixing of gas and solution in a bubble type absorption system is better than that in a falling film type. This study is investigated a bubble formation of NH_3 gas absorption. The gas is provided through a single orifice into ammonia aqueous solution under system pressures of 0.1 to 0.4 MPa. Concentration of the solution is from 0 to 0.1 kg/kg and temperature is at 295 K. System pressure has an effect on the shape and the spherical equivalent diameters (bubble diameter) of initial bubble. It is clarified that bubble diameter increases with increasing NH_3 vapor Reynolds number and decrease with increasing system pressure at low gas flow rate.
