Abstract
An experimental study was carried out to determine the efficiency of spray flash evaporationoccurring in a superheated water jet injected vertically downward through a simple tubular nozzle.The range of experimental variables include: superheats from 0.3 to 8.0 K, liquid flow rates from 0.83 to 2.50 kg/s, liquid temperatures from 40 to 80°C, and nozzle diameters 21.2 and 28.1 mm.
As a result of these experiments, it was realized that, for liquid superheats greater than 3 K, evaporation efficiency of higher than 0.8 was obtained at most experimental conditions tested andthe present type of liquid jet injected vertically downward was more effective than the types of jetinjected vertically upward and horizontally. It was also realized that these experimental resultscould be applied to design for a spray flash evaporator of large scale by adopting a multi-nozzle type.
