Investigation of the liquid evaporation process in a vacuum chamber with ultrasound influence

Abstract

The investigations of the process of heat and mass transfer in the evaporation of model liquids (distilled water, alcohol mixture, kerosene TC-1) in a vacuum chamber (VC) under parametric ultrasonic influence (UI) and vacuum influence (VI) on a liquid with the purpose of using the obtained results for the development of a methods for designing the evaporation system of unused liquid residues of rocket fuel remaining in the launch vehicle (LV) tanks at the end of the mission. The initial data, variable parameters, assumptions and limitations have been determined. Experimental dependences of the temperature variation of model liquids and gas in a VC under UI under conditions of reduced pressure (up to 0.065 kPa) are obtained. The masses of evaporated model fluids and the rate of evaporation are determined. A comparative analysis of the experimental data obtained for various model liquids was carried out, which showed that the evaporation rate increases with increasing amplitude of the bath bottom vibrations, with the highest evaporation rate under the same conditions for kerosene TC-1.