Condensation of binary mixtures of vapours of immiscible liquids
Graham T. Polley
2134/35212
https://repository.lboro.ac.uk/articles/thesis/Condensation_of_binary_mixtures_of_vapours_of_immiscible_liquids/9239006
The condensation of mixtures of vapours of immiscible liquids is
a process which occurs frequently in the oil and chemical process
industries, particularly where such processes as steam distillation,
heterogeneous azeotropic distillation and solvent drying are used. Yet
the process is not understood. The discrepancies between the heat
transfer coefficients reported by previous workers in this field are so
large that none of the published correlations can be confidently used
for design purposes. The relationships found between heat transfer
coefficient and temperature driving force differ so widely that it is
impossible to predict., without prior experimentation, the behaviour of
condensers when operating conditions are changed. The present state of
knowledge in this field is such that it is not known whether the factor
controlling heat transfer rate during condensation is simply the conductive
resistance of the condensate layer, or whether the conditions at the
vapour–liquid interface are of importance. A need for further work in
this field is obvious.
The work described in this thesis covers the design and development
of an apparatus to investigate the process of condensation of mixtures
of vapours of immiscible liquids and an experimental study in which
local heat transfer coefficients have been measured and related to
visual observations of the condensate flow pattern.
2018-10-08 10:19:45
untagged
Chemical Engineering not elsewhere classified