Heat transfer in a continuous bubble column

Abstract

The effective thermal conductivity ke was measured for a continuous bubble column operating within the bubbly flow regime. ke was found to be independent of liquid flow rate but strongly dependent on gas flow rate and physical properties of the liquid phase over the ranges 0.1>uG>4 cm/s, 0>uL>3.4 cm/s, 0.00096> μ >0.0028 kg/m μ s and 0.047 >σ>0.072 N/m.

Measurement of gas–liquid two-phase flow in bubble columns using ensemble correlation PIV

“…Precisely in this area however, reliable experimental data are scarcely available in the open literature. In recent years a considerable amount of work has been devoted to (qualitative) experimental observations of the #ow structure in pseudo two-and three-dimensional bubble columns (Chen, Jamialahmadi & Li, 1989;Chen, Reese & Fan, 1994;Becker, Sokolichin & Eigenberger, 1995). These studies provide insight into the time-dependent behavior of bubble columns and the #ow regimes prevailing in them, but fail to provide adequate quantitative data suitable for detailed model validation.…”