Experimental study on heat transfer characteristics with forced convection in narrow annulus;

Comparative experimental analysis of pool boiling heat transfer outside tube and inside narrow annulus;

The results show that narrow annulus can enhance the single phase heat transfer, but instead of further enhancing the heat transfer, the annulus with gap size of 0.

Experimental study was performed using water as working medium to investigate the flow instability in a vertical narrow annuli with both subcooled and saturated boilings.

Experiments were carried out to investigate the single-phase forced convection heat transfer with water in three vertical narrow annuli which were heated from inside by primary water.

Boiling heat transfer from bare tube and in narrow annuli was experimentally studied.

Experimental study of natural convective subcooled boiling heattransfer in a vertical annular channel;

Based on the experiment of twin-wire narrow gap welding in single pool mode by employing alternative pulsed arcs, the influences of welding parameters on the appearance of weld and welding process stability were investigated.

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW(narrow gap welding) can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

The hollow-axis motor drives the offset nozzle and rotates the arc on the tip of wire at high speed,so as to ensure enough penetration into the sidewalls in narrow gap welding.

The polymer PPDFcE is indeed a small bandgap co.