Verification of method for calculating parameters of acoustic-magnetic devices installed in heat supply system of green­house complex

Abstract

The article presents the verification of the method for calculating acoustic-magnetic devices parameters. Periodic greenhouse complex pipe replacement makes a problem of replacing acoustic-magnetic devices. The scientific problem is the design of acoustic-magnetic devices with processing geothermal water optimal efficiency using pipes of various diameters. To calculate the device parameters using the existing methods based on the similarity theory, experimental studies were conducted with five acoustic-magnetic devices for pipes of various diameters on a special test stand. The seven similarity criteria were established and the regression analysis method was used to create a regression equation for the resulting variable -the efficiency of scale formation after geothermal water treatment with an acoustic-magnetic device. Regression equation analysis allows to determine the three significant criteria for ferrite ring properties and geometric characteristics, the acoustic-magnetic device, magnetic and acoustic components. In order to verify the considered methods of calculating the acoustic-magnetic device parameters, experimental studies were carried out according to the experiment plan on the test stand with the acoustic-magnetic device for a pipe with internal diameter of 12 mm. When experimental data were processed, regression analysis methods were used to obtain a multiple regression equation. According to the research results, it was found that indicators of the experimental and control group devices installed on pipes in the greenhouse complex with various values of the internal diameter differ insignificantly. The device's performance indicators that were found experimentally and calculated from the model, also differ insignificantly. This fact proves the efficiency of the method used for calculating parameters in the acoustic-magnetic device design and, in addition, provides an opportunity to create devices with acceptable resulting indicator value for pipes of the required range.