Change in Mixing Power of a Two-PBT Impeller When Emptying a Tank

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00349973" target="_blank" >RIV/68407700:21220/21:00349973 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/pr9020341" target="_blank" >https://doi.org/10.3390/pr9020341</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/pr9020341" target="_blank" >10.3390/pr9020341</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Change in Mixing Power of a Two-PBT Impeller When Emptying a Tank

Popis výsledku v původním jazyce

The paper presents research on the phenomenon of an increase in mixing power during the emptying of a tank with two 6-PBT45 degrees axial impellers in operation, located on a common shaft, pumping the liquid to the bottom of the mixing tank. A large increase in mixing power took place when the free surface of the liquid was just above the upper edge of one of the impellers (h(p)/D < 0.1). This increase was even more than 50% compared to the design power for a fully filled mixing vessel. Admittedly, high motor overload, while not very long, may damage it. The study investigated the instantaneous torques acting on the impeller shaft during the emptying of the tank and the velocity distributions in planes r-z. On their basis, the mechanism of the phenomenon observed was determined and correlation relationships were given that permitted the calculation of the numerical values of the power increase factors.

Název v anglickém jazyce

Change in Mixing Power of a Two-PBT Impeller When Emptying a Tank

Popis výsledku anglicky

The paper presents research on the phenomenon of an increase in mixing power during the emptying of a tank with two 6-PBT45 degrees axial impellers in operation, located on a common shaft, pumping the liquid to the bottom of the mixing tank. A large increase in mixing power took place when the free surface of the liquid was just above the upper edge of one of the impellers (h(p)/D < 0.1). This increase was even more than 50% compared to the design power for a fully filled mixing vessel. Admittedly, high motor overload, while not very long, may damage it. The study investigated the instantaneous torques acting on the impeller shaft during the emptying of the tank and the velocity distributions in planes r-z. On their basis, the mechanism of the phenomenon observed was determined and correlation relationships were given that permitted the calculation of the numerical values of the power increase factors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Processes

ISSN

2227-9717

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000623128000001

EID výsledku v databázi Scopus

2-s2.0-85101376085