Method of determining the volume of forming gas bubbles

• Autorzy: Rząsa M. , Czapla B.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a method of determining the volume of gas bubble formation. This issue is important because of the choice of parameters in the processes of mass exchange between gas and liquid. The idea of measurement method is based on filming the formation of gas bubbles, and on this basis is made image analysis process. These papers describe the steps relevant the separation of gas bubble image and calculations of its volume. In addition a sample researches have conducted, for whom defined the uncertainty of measurement. Analysis of the results determined the boundary intervals, at which a change in the pattern forming bubbles occurs, which results in that the diameter of the bubbles formed strongly depends on the gas stream emerging from the nozzle.

Słowa kluczowe

EN

image analysis; gas bubbles; measurement volume

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 2
• Strony: 35--38
• Opis fizyczny: Bibliogr. 6 poz., rys., schem., wykr., wzory

Twórcy

autor

Rząsa M.

• Department of Thermal Engineering and Industrial Apparatus, Opole University of Technology

autor

Czapla B.

• Department of Thermal Engineering and Industrial Apparatus, Opole University of Technology

Bibliografia

• [1] Nahra H. K., Kamotani Y.: Prediction of bubble diameter at detachment from a wall orifice in liquid cross-flow under reduced andnormal gravity conditions, Chemical Engineering Science 58 (2003) pp. 55–69. DOI: 10.1016/S0009-2509(02)00516-X
• [2] Lage P. L. C., Espósito R. O.: Experimental determination of bubble size distributions in bubble columns: prediction of mean bubble diameter and gas hold up. Powder Technology 101 (1999), pp. 142-150. DOI: 10.1016/S0032-5910(98)00165-X
• [3] Grau R. A., Heiskanen K.: Visual technique for measuring bubble size in flotation machines. Minerals Engineering 15 (2002) pp.507–513. DOI: 10.1016/S0892-6875(02)00074-2
• [4] Bozzano G, Dente M.: Visual technique for measuring bubble size in flotation machines, Computers and Chemical Engineering 25 (2001) pp.571–576. DOI: 10.1016/S0098-1354(01)00636-6
• [5] Rząsa M. R.: Selection of parameters of the optical tomograph applied for tests of gas bubble shapes. Chemical and Process Engineering 2014, 35 (1), 19-33. DOI: 10.2478/cpe-2014-0002
• [6] Rząsa M. R., Sawicki J.: A Flowmeter for Measurements of Very Small Gas Flows, Sensors & Transducers Magazine Vol.40, Issue 2, 2004 pp.128-136, http://www.sensorsportal.com/html/digest/february_04/p_18.pdf