CHF and dryout point in vertical narrow annuli

Experimental study associated with CHF and dryout point in narrow annuli is conducted with 1.5mm and 1.0mm gap, respectively. Distilled water is used as work fluid. The parameters examined were: pressure from 2.0MPa to 4.0MPa; mass flux from 26.0kg/(m2s) to 69.0kg/(m2s); heat flux from 10kW/m2 to 70kW/m2; exit equilibrium mass quality from 0.52 to 1.08.