SYSTEM FOR THE EXPERIMENTAL STUDY OF FLASH EVAPORATION.

The performance of meaningful experiments on heat, mass and momentum transport phenomena during flash evaporation in water desalination multistage flash units requires careful design and construction of the experimental apparatus due to the very small thermodynamic driving potentials and the generally hostile nature of the fluid. The paper describes the design philosophy and considerations utilized in the construction of a two-stage scaled-down model of a flash evaporator, and the instrumentation and techniques developed or adapted for the measurement of temperature, pressure, flow, level and salinity, and for the visualization of the flow.