Izvorni znanstveni članak
https://doi.org/10.15255/CABEQ.2018.1392
Experimental Modelling of Local Heat Transfer Process for a Gas-liquid System in an Agitated Vessel with the System of A 315 – RT Impellers
I. Bielka
; West Pomeranian University of Technology in Szczecin, Department of Chemical Engineering, Szczecin, Poland
M. Cudak
; West Pomeranian University of Technology in Szczecin, Department of Chemical Engineering, Szczecin, Poland
J. Karcz
; West Pomeranian University of Technology in Szczecin, Department of Chemical Engineering, Szczecin, Poland
Sažetak
The results of the experimental studies of the local heat transfer process for a gas-liquid system in the region of the cylindrical wall of baffled agitated vessel equipped with the system of A 315 (lower) – RT (upper) impellers are presented. Newtonian liquids of different physical properties and air were used as continuous and dispersed phases, respectively. Local heat transfer coefficients were measured using both thermal and electrochemical methods. Distributions of the heat transfer coefficients were described by means of equations (13) – (16) and (17) – (21), separately, for turbulent and transitional ranges of the fluid flow in the agitated vessel. These equations, concerning both coalescing and non-coalescing gas-liquid systems, have no equivalent in the open
literature. Moreover, the results for the A 315 – RT impeller system were compared with our previous heat transfer data obtained using CD 6 – RT or RT – RT impeller systems.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
agitation; gas-liquid system; local heat transfer; system of A 315 – RT impellers
Hrčak ID:
206727
URI
Datum izdavanja:
13.10.2018.
Posjeta: 679 *