Experimental research on dryout point of downstream in narrow annular channels

An experimental research on superheated boiling heat transfer in the narrow annular channels under the condition of downstream was carried out in the Research Institute of Nuclear Power Operation. The water-to-water heating technique was adopted to produce a serial of experimental dates. The dry-out point (DO point) was obtained by searching the temperature jump point in the wall temperature profile figure. The effect of main flow parameters on annular flow boiling crisis is analyzed. The multi-variable non-linear regression method was adopted to get some semi-experiential correlation: X = 1.00517P(-0.08685)G(-0.1083)t(0.0506).