Experimental Study on Two-Phase Fractional Multiplier of Post Dry-Out Mist Flow in Vertical Narrow Annuli

Experimental study associated with post dry-out mist flow in the vertical narrow annuli with the gap width of 1.1 and 1.6 mm was conducted. The test section can be simultaneously heated from inner and outer tubes by electricity. Based on experimental data, a new correlation of two-phase multiplier, which was based on single steam phase flow in the ducts, was developed. The new correlation can predict the experimental data well.