Subcooling

TL;DR: In this article, the authors analyzed the mechanism of collapse of vapor bubbles and emission of micro-bubbles during Microbubble Emission Boiling (MEB) and showed that the bubble surface became rougher and more unstable with the increase in liquid subcooling and volumetric flow rate, during which four condensation features were confirmed and defined as smooth bubble regime, shape oscillation regime, transition regime, and capillary wave regime, respectively Fine surface wave formed after a while of condensation would enlarge the effective area of bubble condensation, resulting in the acceleration

TL;DR: In this article, the authors conducted experiments with two single rectangular mini-channels of same hydraulic diameter (1.4mm) and different aspect ratios for conditions of horizontal boiling flow.

TL;DR: In this paper, the effects of the imposed wall heat flux, mass flux, liquid subcooling and saturation temperature of R-134a on the resulting nucleate boiling heat transfer and bubble characteristics were examined in detail.

TL;DR: In this article, population balance equations combined with a three-dimensional two-fluid model are employed to predict subcooled boiling flow at low pressure in a vertical annular channel, and a comparison of model predictions against local measurements is made for the void fraction, bubble Sauter mean diameter and gas and liquid velocities covering a range of different mass and heat fluxes and inlet subcooling temperatures.

TL;DR: In this paper, the authors investigated direct contact condensation of saturated steam bubbles introduced into a quiescent subcooled water environment for a range of pressures from 10.3 to 62.1 bar (150-900 lb in 2 ) for subcooling from 15 to 100°C and for initial bubble diameters of about 3mm.