Methods for determining optimal characteristics of acoustic-magnetic devices installed on greenhouse geothermal heating system pipes of various diameters

Abstract

There is a problem of installation of acoustic-magnetic devices at pipes of various diameters, when planned routine pipe replacement work is carried out in greenhouse geothermal heating systems. This technical problem determines a scientific problem of finding acoustic-magnetic devices characteristics, which allow to change only the acoustic-magnetic device internal diameter, if transition to different pipe diameter is needed. To solve this problem, a hypothesis was put forward about the possibility of finding the extremes of the function of water treated with physical field salts separation process. For the hypothesis of the experimental study an acoustic-magnetic model of the device was studied. This model represents the relationship between the following factors: the size of the ring, the inner diameter of the pipe, similarity coefficients, and the resulting variable -the antiscale effect. It was decided to study the optimum region by screening out insignificant factors and building a plan for the 2 nd complete factor experiment. After translating significant similarity coefficients into natural values and analyzing the physical quantities dimensions, physical regularities of phenomena were revealed by means of functional dependencies between the quantities. When implementing the planning matrix, an inadequate model was obtained. Using the steep ascent method, it was not possible to obtain the optimization parameters, so it was decided to build a second order orthogonal plan to describe the optimum area. The second order regression equation turned out to be adequate. Its extremum was found. To verify the obtained global maximum values of the geothermal water acoustic-magnetic treatment process, the function value was calculated from the model. The results allowed to obtain the optimal efficiency of preventing scale formation on the greenhouse complex geothermal heating system pipes of various diameters by the optimal characteristics of the acoustic-magnetic devices.