Theory And Application Of Heat Transfer By Liquid-Vapor Phase Change With Electric Field

Liquid-vapor phase change has been used in so many engineering field. Generally speaking, the application of liquid-vapor phase change can be divided into two major aspects:the first one is mass transfer by liquid-vapor phase change, for example, drying the wood,purification of some chemical compound or agentia,purification of Chinese herbal medicine and so on; the other one is heat transfer by liquid-vapor phase change, for example, the air condition and the refrigerant in the vehicle,the heat pipe, some temperature control process and so on.Based on the far ranging application of liquid-vapor phase change process, so many study on it has been done. What this paper focus to do is tying to study the influence of the external electrostatic field on the process of liquid-vapor phase change and offer some references to those who major in this field to explain the reason and theory of the heat transfer of liquid-vapor phase change by the external electrostatic field.This paper begin with the basic theory of phase equilibria and the dielectrics theory,introducing the influence of electric field as an item. We carry out the mathematical expressions about some physical quantities which are closely related to heat transfer by liquid-vapor phase change with the external electrostatic field. The key point we study for are the heat capacity, temperature, enthalpy and the latent heat of the liquid-vapor phase change and we do some checking calculations about our conclusion and that of others to give a prove of what we do. In summary, the theory of heat transfer by liquid-vapor phasecChange with electric field can provide some guiding significance to this scientific field and the person who works for it.