Water aeration systems are highly efficient if the dispersion of air in the water is carried out in a controlled and uniform manner. The use of fine bubble generators ensures this and in addition, creates a small loss of pressure when air passes through them. The paper demonstrates that producing as few air bubbles as possible leads to a more efficient aeration process. Two water aeration installations are compared:
- The first has a perforated plate with 152 orifices Ø 0.1 mm;
- The second has four perforated plates, each with 113 orifices Ø 0.05 mm;
Both installations are successively supplied with the same flow rate of compressed air, at the same temperature and at the same initial dissolved oxygen concentration in the water.
The rotating machine, to which the paper relates, refers to the following:
A rotating machine construction solution that can be used as a power machine (steam engine, pneumatic engine)
The same construction solution can be used as a working machine (pump, fan, and compressor). The constructive solution and the operating principle of the rotating machine are presented, the flow rate and the machine power computation model is indicated. At the end of the paper, the machine effective efficiency is experimentally determined.
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