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Single‐Droplet Experimentation on Spray Drying: Evaporation of a Sessile Droplet
Author(s) -
Perdana J.,
Fox M. B.,
Schutyser M. A. I.,
Boom R. M.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100040
Subject(s) - spray drying , mass transfer , evaporation , materials science , spray characteristics , chemistry , chemical engineering , mechanics , chromatography , thermodynamics , spray nozzle , physics , engineering , nozzle
The basis for the development of a platform for high‐throughput experimentation on spray drying is formed. To mimic the drying of single droplets during spray drying, individual droplets are dispensed and dried on a flat surface. A dispensing process is used that is able to dispense viscous liquids and generates small droplets ( d p > 150 μm). The dispensed droplet size for varying liquids could be accurately described with a predictive model based on Bernoulli's law. The drying of droplets is monitored with a camera and modeled with mass balance equations. Finally, a Sherwood correlation is derived to describe the mass transfer between the sessile droplet and the drying air.