Abstract
The effects of the number of nozzles on the change of nonequilibrium temperature differencewere investigated for the spray flash desalination plant. Superheated water at about 30°C is injectedinto a low pressure chamber through cylindrical nozzles. This temperature is nearly equal tothe temperature of the surface seawater, and lower than that of conventional desalination plant. The number of nozzles was changed from 2 to 6 and the range of the flow rate was from 0.5to 4.0 t/h. The reduction of the nonequilibrium temperature difference (NETD) and phenomenaof the spray flash evaporation are shown. In the case where the flow rate is high, NETD is affectedby the number of nozzles. On the other hand, when the flow rate is low, the effect of the number of nozzles is not observed.
