Rate of Gas (Vapor) Bubble Floating Up During the Process of Bubble Aeration at Different Modes

Abstract

Speeds of free emersion of bubbles (the viscous mode of emersion) are investigated, at emersion of bubbles as quasifi rm sphere under Stokess law. Emersion speeds at deformations of bubbles from spherical to griboobrazny are considered; at the square law of resistance of emersion of large bubbles, at the slow expiration of gas in the landlocked volume of liquid from an opening. Infl uence of geometry of channels on the speed of emersion of bubbles is analyzed. For processing of experimental data semi-empirical methods of the theory of similarity are used.

Heat pipes as perspective base elements of heat recovery in heat supply and ventilating systems

“…The increase of operating temperature in the pipe considerably intensifies these processes not changing their nature. It gives an opportunity to simulate the rate of noncondensable gas and precipitate depending on the temperature and time and make a forecast about the whole period of HP operation if there isn`t enough time and conditions for testing [6]. The period of operating service under the real conditions must be at least 12 years.…”