Rising-falling film evaporator

Handbook of Evaporation Technology Rising-Falling Film Evaporators... 

Fig. 1 Exploded view of rising/falling film plate evaporator. (Courtesy of APV Crepaco, Inc., APV Americas, Rosemont, IL—An Invensys Company.)...

Heat transfer can also be enhanced by application of an electric field. In boiling heat transfer, electric fields have been successfully used to control nucleation rates and achieve a continuous rise in heat transfer coefficient. Up to a sevenfold heat transfer enhancement by the electric field in falling film evaporators has been reported. In the presence of an electric field, both AC and DC, the mixing length in microchannels is shortened considerably, by a factor 30 or more. 

Figure 11. Plate evaporator, rising/falling film type. (APVCompany, Inc.)...

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