Tsygankova S. Substantiation of the air ion regime normalization parameters in rooms at artificial ionization of air

Object of research - the process of air ions dispersion in rooms at artificial ionization of air. The purpose of the thesis: the substantiation of the air ion regime normalization parameters in the rooms at the artificial ionization of air by simulating the process of air ion dispersion and prognosis and controlling of these parameters. Research methods: numerical simulation methods based on fundamental multidimensional equations of aerodynamics, electrostatics and mass transfer; physical experiments and calculations based on analytical models to verify the developed numerical models. Theoretical and practical results: a numerical model allowing to substantiate the parameters of the air ion regime normalization at conditions of air artificial ionization in the room is developed; the method of air ion regime estimation and control is improved; the developed program code can be used to predict air ion regime in production rooms without limiting their functional orientation, as well as in specialized "clean" rooms. Scientific novelty: for the first time the regularities of the negative and positive air ions concentration distribution in the room were established, depending on the spatial characteristics of room and regime of artificial ionization; for the first time the dependence of the air ion regime parameters change for the application of control screens inside the room were established, taking into account the dynamics of the air flow, the electric field of the charged particles, the diffusion and ions emission; for the first time numerical model that allows to substantiate the air ion regime normalization parameters in rooms at artificial ionization of air has been developed, taking into account the aerodynamic properties of the air environment, the recombination of ions and their drift under the action of electrostatic fields, which allows prognosis and controlling the air ion regime according to the requirements of sanitary norms at air ionization in rooms; the method of air ion regime estimation and control in rooms is improved, based on the use of balance model, allowing to take into account of the air exchange rate and the air ions and dust emission in room with computerized workplaces. Degree of implementation: the results of the work are introduced into the practice of enterprises the Dneprovsky plant of building materials and LTD CME "Bioton" for analysis and prognosis of air ion regime parameters in the development of air quality normalization in the enterprises rooms; the materials of the thesis are used in the educational process in the State Higher Education Establishment "Prydniprovs'ka State Academy of Civil Engineering and Architecture" in the teaching courses "Sanitary and hygienic fundamentals of the specialty" and "Air conditioning" and performing master's thesis on specialty 192 "Construction and civil engineering". Scope: rooms with artificial ionization of air.