Influence of changes in liquid circulation on the mixing power when emptying the tank with a rotating 6FBT impeller

• Autorzy: Stelmach Jacek , Kuncewicz Czesław , Jirout Tomáš , Rieger František

Identyfikatory

DOI

10.24425/cpe.2023.142292

• Języki publikacji: EN

Abstrakty

EN

This study presents the results of tests on the mixing power and distribution of three velocity components in the mixing tank for an FBT impeller during tank emptying with an operating impeller. A laser PIV system was used to determine speed distributions. It was found that for the relative liquid height in the tank H* = H/H0 ≈ 0.65 and H* ≈ 0.45, the liquid circulation in the impeller zone changed from radial to axial and vice versa. These changes were accompanied by changes in the mixing power which even reached 40%. In the theoretical part, a method of calculating the mixing power using the classical model of the central vortex and distribution of the tangential speed in the impeller zone was proposed. Although the method turned out to be inaccurate, it was useful for determining the relative power.

Słowa kluczowe

EN

FBT impeller; mixing; power consumption; tank emptying

PL

wirnik FBT; mieszanie; pobór energii; opróżnianie zbiornika

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering : New Frontiers
• Rocznik: 2023
• Tom: Vol. 44, nr 1
• Strony: art. no. e3
• Opis fizyczny: Bibliogr. 41 poz., rys.

Twórcy

autor

Stelmach Jacek

• Lodz University of Technology, Faculty of Process and Environmental Engineering, Wólczańska 213, 93-005 Łódź, Poland

• https://orcid.org/0000-0001-9348-5315

autor

Kuncewicz Czesław

• Lodz University of Technology, Faculty of Process and Environmental Engineering, Wólczańska 213, 93-005 Łódź, Poland

• https://orcid.org/0000-0003-0004-1980

autor

Jirout Tomáš

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Technická 4, 166 07 Praha 6, Czech Republic

• https://orcid.org/0000-0003-3110-6978

autor

Rieger František

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Technická 4, 166 07 Praha 6, Czech Republic

• https://orcid.org/0000-0001-6477-5567

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).