CHAMBER GEOMETRY IN MULTI-STAGE FLASH EVAPORATORS

摘要

An investigation was made of the importance of various parameters on the length of a typical stage in a multi-stage sea water flash evaporator for a set of standard conditions, the chamber efficiency was found at different chamber sengths, and from this, an optimum length estabilished, such that vapourisation was complete.nEach parameter was examined over a range of values to determine its influence on chamber length. Data obtained was expressed in the form of curves of efficiency vs. chamber length, and from these, constant efficiency curves were plotted for a given parameter.nFinally, an empirical equation was derived from the basic test data, to give an indication of the chamber length required for complete flash-off in a stage for a specified range of conditions. This equation was confirmed, within this range, by operation at arbitrary conditions.