Experimental research on condensation heat transfer of supersonic jet in subcooled water

The condensation heat transfer of supersonic steam jet immerged in subcooled water was investigated. The inlet steam pressure and subcooled water temperature were in the range of 0.2-0.5 MPa and 20-70°C, respectively. The results indicated that the shape of steam plume was influenced by the inlet steam pressure and subcooled water temperature. Moreover, three models were used to analyze the condensation heart transfer. According to the molecule kinetics theory, the condensation heat transfer coefficient was in the range of 0.16-1.91 MW/(m²·°C), and tended to increase as the subcooled water temperature increased. The condensation heat transfer coefficient was in the range of 0.68-1.68 MW/(m²·°C) according to the turbulence intensity theory, and was independent of the water temperature. The condensation heat transfer coefficient was in the range of 1.47-2.11 MW/(m²·°C) according to the convection heat transfer theory, and increased first then decreased with the water temperature.