The article presents the formation of physical models of fittings of ventilation systems in the conditions of change of linear sizes and forms of adjacent sections of air ducts of ventilation systems.
The article presents the results of theoretical research on obtaining of the maximum profit by the installation and procurement company in the manufacture and sale of pipe billets for the installation of ventilation systems in the production premise. Graphical and analytical dependences are given. The results of research substantiate the receipt of the maximum profit in the manufacture and sale of the ventilation pipe billets of the different diameters by the installation and procurement enterprise.
At work investigates the incoming flow and its alignment to the ventilation system elements, located directly outside a radial fan. The efficiency of the ventilation system depends on the improvement of its aerodynamic components. Of great importance are placed the elements directly outside a radial fan. The attention paid to the improvement in work mode energy efficiency of ventilation systems alignment the incoming flow of radial fan the variable modes of its work.