Abstract
In an attempt to develop a compact and highly efficient spray-type flash evaporator, an experimental study has been conducted on spray flash evaporation occurring in a superheated water jet injected through a circular tube nozzle into a low-pressure vapor zone.
Experimental results are presented for non-equilibrium temperature difference measured over considerably wide ranges of liquid temperatures, liquid flow rates, nozzle diameters and superheats. The results are compared with those obtained in conventional MSF (multi-stage flash) evaporators and also with the empirical equation obtained previously.
It is found that the rates of reduction in non-equilibrium temperature difference of superheated liquid jets are extremely faster than those of flowing superheated liquid in conventional MSF evaporators.
