The purpose of this work has been the collection of
experimental data in a single effect vertical falling film
evaporator in order to obtain a general correlation for
the calculation of the liquid side heat transfer coefficient,
suitable for the conditions found in any effect of a multiple
effect unit as those usually found in the fruit concentrate
juice industry.
A correlation of h+ as a function of the film Reynolds
and Prandtl numbers was found. A correlation in terms
of Reynolds number only was also obtained for this
particular system.
Although the equipment characteristics made it possible
the experimentation in laminar and transition zones
only, the results apply since those are the conditions