Air in industrial premises

Abstract

Abstract The article considers a method for increasing the stability of air parameters in a limited space of the general production process using simulation methods in the environments of SolidWorks Flow Simulation HVAC Module Add-In and Matlab Simulink and Fuzzy Logic Toolbox. To select the simulation method, the models of Boussinesq, Spalart - Almaras, k - ω and k - ε; models, Reynolds, and the equations describing these models are considered. It is established that the most effective for the problem is the Navier-Stokes equation averaged by Reynolds. For the calculated ventilation system, as a result of simulation, we obtained the distribution of temperatures, air velocities, and temperatures of enclosing surfaces, floors, and objects. The results obtained were used to create a fuzzy controller. We obtained the set term and membership functions for input and output variables for four zones. The hierarchical structure consisting of three levels was used to implement the control process. Setting the FC parameters to the desired parameters is achieved by changing the dimension of the terms of the sets, the number and type of the membership function. An analytical description of the control method based on fuzzy logic is obtained. The control process is being carried out continuously in tracking mode. The results of experiments are submitted. The simulation showed that it is possible to stabilize the parameters in a given temperature range with a specified error.