ISSN Online: 2377-424X
International Heat Transfer Conference 4
BOILING HEAT TRANSFER CRISIS IN TUBES WITH DISPERSED ANNULAR FLOW OF STEAM-WATER MIXTURES
摘要
Modeling of boiling heat transfer crisis has been carried out on the basis of the experimental data taken by the author for cylindrical tubes in the pressure range of 27.5 to 176 bars. Mass velocities of 1000 to 5000 kg/m2sec, mass void fractions from 0 to 0.7 and flux densities up to 5 MW/m2 have been covered. The model involves the theory of hydrodynamic stability of gas-liquid systems. Formulae to calculate mass void fraction when hydrodynamic crisis occurs and heat flux density in dispersed annular flow of steam-water mixture are presented.