The Mathcad system usage in finding normal equations in the description of food extraction processes

The article describes using electronic computer systems, particularly Mathcad when finding standard equations for building mathematical models of technological processes in the chemical and food industries. Classical extraction process are usually based on analyzing differential equation diffusion under appropriate boundary initial conditions. Also, describing models, Fick's equation, adsorption pore model molecular-statistical studies, that take into account physics substance transfer a capillary-porous medium, etc., used. Modeling mass influence intensifying action microwave field is described studies systems “coffee – water” “oak wood water-alcohol solution”, grounds alcohol,” “amorant hexane,” mechanism combined extractive substances from porous structure proposed solution description intensification rather complicated. structures to occurs through distribution concentrations at “solid–solvent” interface. However, it passes inner part outer part, capillaries border layer. Complex do not have analytical solutions. When system solve nonlinear equations, recommended use built-in find function calculated Given block. universal genfit quite adequate, which makes possible determine unknown parameters combinations functions by method least squares. This was used interaction “oil containing raw materials solvent” with effect field. Such simplified be along experimental modeling classic similarity theory “dimensional analysis” method. final result these directions construction sound engineering methods design extractors industrial purposes.