Preliminary specification of the dry ice blasting converging-divergent nozzle parameters basing on the standard (analytical) methods
Wstępne określenie parametrów dysz zbieżno-rozbieżnych do czyszczenia mieszaniną suchego lodu i powietrza w oparciu o metody standardowe (analityczne)
Aleksandra Mikołajczak, Piotr Krawczyk, Michał Stępień, Krzysztof Badyda
Streszczenie
Pollution can be a serious problem in industry, that is why various cleaning methods were developed. The dryice
blasting is one of them, which can be easily implemented in a different applications, i.e. electric industry. In this method
dry, compressed air with the solid CO2 particles hits the cleaned surface. The pollution is removed by supercooling and
crushing due to the particles strikes and local volume growth, caused by the dry ice sublimation. To provide the proper airparticles
mixture parameters, converging-divergent nozzles are used. The geometry of the nozzle can have the crucial
influence on the mixture parameters and the cleaning efficiency. Among the most important nozzles parameters the opening
angle, critical cross section and the shape of the outlet were determined. These specification can be used during the further
work as the guidelines to the CFD modeling.
blasting is one of them, which can be easily implemented in a different applications, i.e. electric industry. In this method
dry, compressed air with the solid CO2 particles hits the cleaned surface. The pollution is removed by supercooling and
crushing due to the particles strikes and local volume growth, caused by the dry ice sublimation. To provide the proper airparticles
mixture parameters, converging-divergent nozzles are used. The geometry of the nozzle can have the crucial
influence on the mixture parameters and the cleaning efficiency. Among the most important nozzles parameters the opening
angle, critical cross section and the shape of the outlet were determined. These specification can be used during the further
work as the guidelines to the CFD modeling.