Abstract
For the purpose of observing the flow of brine in the standard type evaporator, we made section patterns (scale: 1/2 and 1/4) which enabled us to examine the flow of brine in the evaporator. By suspending the fine particles in fresh water at normal temperature, the stream line and the velocity were measured with photographs taken with a stroboscopic camera. The flow of brine in the evaporator was observed by measuring the static pressure through many pressure taps of the pattern. From the stream line and static pressure thus observed, we were able to illustrate the relation between the bottom shape of the evaporator, the level of liquid and the head loss. It was found that the dish-like bottom of the evaporator was of an ideal shape for an evaporator. On the other hand, it was recognized that the distribution of the solid fractions of liquid in the standard type evaporator with an area of 15m2 coincided with that of the velocities in the pattern. We studied the similarity of the flow of brine in the patterns with the different reduced scales by the turburence intensity and the turburence Reynold's number, on the basis of the results obtained.
