Gusentsova Y. Fluid Technics in Heat-Ventilating Systems

Thesis is devoted to the solution of scientific problem - development and manufacturing application of methods of efficiency increasing of ventilation and air heating systems on the basis of development of a new class fluidic type apparatus. Apparatus does not contain moving mechanical parts; due to what it has high reliability and longevity. Fundamental principals of calculation and design of fluidic regulative organs for the systems of ventilation and air heating are developed. Basic hydrodynamic approaches are used for development of mathematical models of different levels for theoretical researches. The experimental researches confirmed adequacy of mathematical models. Original constructions that are offered are protected by patents of Ukraine, both vortex regulative organs of the systems of ventilation and air heating and technological charts of their use. Approximation models that based on results of experiments with the use of methods of the orthogonal planning are developed. It determines the association of geometrical parameters of fluid and vortex devices and their hydraulic characteristics and application package is developed for engineering use. The analysis of different ways of productivity ventilator regulation is executed, and it is shown theoretically and experimentally confirmed that the original bypass method productivity of regulation of the with ejector that set on the line of suction has high efficiency. The transfer function of control object (systems of the air heating) is got and efficiency of different laws of temperature control is probed - linear and nonlinear. The technique of optimization of technical and economic characteristics of systems ventilation and air heating is presented, advantages of the developed technological circuits for ventilating installations with fluid and vortex devices for changing of ventilating system productivity is shown. Comparison of reliability parameters of various ways of creation of a microclimate in ventilated premises are carried out. Economic efficiency of using in heat-ventilating systems fluid techniques is proved.