Discussion on Influence Factors of Average Diameter of Atomized Particles
Discussion on Influence Factors of Average Diameter of Atomized Particles
The average diameter of atomized particles is a major indicator of atomization quality. Therefore, a lot of work has been done to study the relationship between the average diameter and various factors in atomization research, so as to explore ways and methods to improve the atomization quality.
The viscosity force and surface tension of the oil hinder the atomization. Atomization uses external force to overcome this internal resistance. Therefore, the basic principle to improve the atomization quality is to reduce internal force and increase external force.
The main measure to reduce the internal force is to increase the oil temperature to reduce the oil viscosity. The measures to increase the external force include increasing the oil pressure, increasing the flow rate of an atomizing agent, increasing the supply of atomizing agent, improving the contact mode of atomizing agent and oil flow, and increasing the action area and time. The effects of different measures on the average diameter of atomized particles are as follows.
Changing the oil temperature can change the viscosity and surface tension of the oil, that is, increasing the oil temperature can significantly reduce the viscosity of the oil; The surface tension also decreases but has little change.
The atomization quality can be improved by reducing the viscosity of the oil. For example, when burning high-viscosity heavy oil, it is not easy to achieve good atomization quality. Only preheat the heavy oil to a higher temperature, that is, reduce its viscosity, and then the atomization quality can be improved. The smaller the spraying speed of the atomizer, the more significant the influence of viscosity. Therefore, in order to improve the atomization quality in production, the viscosity of heavy oil can be reduced by increasing the oil temperature. In order to achieve good atomization, the oil can be heated to a certain temperature according to the relationship between viscosity and temperature.