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 issue of the normative air exchange ensuring in the premises of the boiler houses is extremely important. The article presents the results of theoretical and experimental studies of air velocity determination in the distribution of air by round and compact jets in the boiler room. Graphical and analytical dependences are given. The research results substantiate the higher accuracy of the average air flow velocity determination in small boiler rooms.
In this article the results of return flow at air distribution by flat laying jets experimental investigations are presented. The chart is composed, analytic equations are also obtained. By these results high efficiency of proposed air distribution scheme using in technological small-sized rooms is shown.
The article is devoted to the decision of actual task of air distribution efficiency increasing with the help of swirl and spread air jets to provide normative parameters of air in the production apartments. It is shown that for reaching of air distribution maximal efficiency it is necessary to supply air by air jets, that intensively extinct before entering into a working area. Simulation of air flow performed with the help of CFD FLUENT (Ansys FLUENT). Сalculations of the equation by using k-εmodel of turbulence are presented.
Air distribution by spread air jets has been regarded. Coefficient of convective heat and heat amount have been determined at air jets spreading on enclosure surface.
Air distribution by interaction of counter non coaxial air jets at pulsing mode has been considered. Dynamic parameters of air flow that is created due to interaction of counter non coaxial flat air jets at their leakage at pulsing mode and creation of dynamic indoor climate in a room has been determined.
Air distribution in a room by swirl and spread air jets has been regarded. Dynamic parameters of air flow that is created due to swirl and spread air jets at their leakage in a room has been determined. Jet spun at an angle of inclination jet twisting plates 90˚ similar in its characteristics to upstream. Grazing jet develops independently of swirling, ie no jets interaction. At an angle of 60˚ tilt plate twisting jet flooring jet also develops independently of swirling, ie no jets interaction.
The article is devoted to the decision of actual task of air distribution efficiency increasing with the help of swirl and spread air jets to provide normative parameters of air in the production apartments. The mathematical model of air supply with swirl and spread air jets in that type of apartments is improved. It is shown that for reaching of air distribution maximal efficiency it is necessary to supply air by air jets, that intensively extinct before entering into a working area. Simulation of air flow performed with the help of CFD FLUENT (Ansys FLUENT).