ISSN Online: 2377-424X
International Heat Transfer Conference 12
Conditions at the outside of a thin slice reboiler bundle determined by particle image velocimetry
Abstract
Particle image traces were obtained by PIV illumination methods in the recirculating fluid at the side of a kettle
reboiler thin slice. The paper describes the apparatus and procedure. Qualitative analysis of the particle image
traces revealed that although liquid approached the side of the bundle with a lateral component, the bulk of the
liquid up-take occurred at the bottom of the tube columns. Based on this and other thin slice studies, it is argued
that 2-D, two-fluid modelling of kettle reboiler flows is invalid when based on inter-phase drag coefficients, void
fraction and flow boiling correlations obtained from 1-D vertical crossflow data.