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

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.

ONB experimental and high-speed video results gotten about F-12 subcooled boiling in vertical narrow rectangular channel with cross-section of 35×2 mm 2, and mass fluxes between 700～1 500 kg.

Using N-S function, and transforming the gravity item to temperature and differential pressure related items, the authors simulate the mixed convection heat transfer in vertical narrow rectangular channels.