S. Dhanasekaran

DOCTORAL RESEARCH (Ph.D)

The experimental and theoretical investigations are carried out to evaluate the gas holdup, bubble diameter, interfacial area axial dispersion number and volumetric mass transfer coefficient for air-water system in a novel Hybrid Rotating and Reciprocating Perforated Plate Bubble Column under countercurrent condition.

The novelty of my research work lies in combining the effects of bubble columns, stirred tank reactors and the reciprocating plate columns. This resulted in Hybrid Rotating and Reciprocating Perforated Plate Bubble Column. The column is designed and fabricated indigenously in the Mass Transfer laboratory, Department of chemical Engineering, Annamalai University.

Experiments are carried out to study the effect of agitation level, superficial gas velocity, superficial liquid velocity, plate spacing and plate perforation diameter on gas holdup, bubble diameter, interfacial area, axial dispersion and mass transfer co-efficient respectively.

POST GRADUATE RESEARCH

An attempt is made to study the effect of motional mixture which neither react nor absorb the heat from the hot fluid. Berl saddles, Pebbles, Glass Beads are used as motionless mixtures in this study. The following streams are used in the double pipe heat exchanger. (1) Water-Water system; Hot water in tube side and Cold water in shell side. (2) Air-Water system; Hot water in tube side and Air in the shell side. Effect of this type of mixers on inside and outside individual heat transfer coefficient, Time constant (response time) based upon inside and outside heat transfer coefficients are studied.