Technological component of current through the stem wall of plant materials

Abstract

The known electro-technological processes are based on the effect of electric current on plant material which increase of energy efficiency should be considered as a process of increasing the technological component of the “forward” (in the direction from the parenchyma to the epidermis) current. At the same time it is expedient to decrease the “reverse” current and the current of through conduction in the “forward” and “reverse” directions which are mainly accompanied by heating of the plant tissue and are inefficient. In this case, it is advisable to use the analysis of processes in the treatment object on the basis of an equivalent electrical substitution circuit. The research goal is to determine the relationship of the effective value of the total current through the stem wall of plant materials and its technological component in a general form on the basis of the analysis of the equivalent substitution circuit synthesized earlier and its transformed version. It is found that the technological component of the “direct” current and the total current through the stem wall contain a constant component and higher harmonics of which only the first two are taken into account when decomposing into Fourier series, and increases with decreasing frequency of electromagnetic oscillations. The expression allowing determining the character of change in the value of the technological component of the current depending on the value of the total current through the stem wall, electric field strength and voltage frequency is obtained; that is of practical importance since it is the total current that may be controlled during the realization of the electro-technological process. Quantitative evaluation of the technological current component involves determining the numerical values of the elements of the substitution circuit.