Abstract
The research deals with the solution of the relevant problem of increasing efficiency of air distribution by the interaction of counter non-coaxial jets for providing the standard parameters of the air in industrial premises. The mathematical model of air supply by the interaction of counter non-coaxial jets in these premises was improved. It was shown that to achieve maximum efficiency of air disctribution, it is necessary to supply the air by jets that attenuate rapidly even before entering the working area. We developed and explored the structure of the air distributor with the interaction of the counter non-coaxial jets, which provides intensive attenuation of velocity and excess temperature of the resulting airflow. The specific feature of this structure is the possibility to supply two non-coaxial inflowing jets. In this way, intensive mixing of inflowing jets with the surrounding air is provided and alternating mode is maintained. The graphic dependences were plotted and the theoretical dependences based on the conducted experimental studies were derived, which may be used in further engineering calculations. The authors developed and protected by the patent of Ukraine [12] the design of air distributor for the air supply by the interaction of the counter non-coaxial jets, as well as for supplying inflowing jets in the alternating mode. The cost-effectiveness of using the air distributor with the interaction of counter non-coaxial jets was shown, compared with alternative options, and specific indicators of the air distribution efficiency were given.
Highlights
Modern development of the society is associated with the needs for improving the sanitary and hygienic conditions in production and non-production premises, as well as for saving material and fuel-power resources
There is a need for development of new structural solutions for air disribution, which would at the same time provide creation of the necessary microclimate and saving of material and power resources
One of the ways of solving this problem is the use of a distributor for providing alternating mode, which supplies two air flows, each of which is characterized by rapid mixing of the inflowing and surrounding air
Summary
Modern development of the society is associated with the needs for improving the sanitary and hygienic conditions in production and non-production premises, as well as for saving material and fuel-power resources. In the premises of small volume with dispersed hazardous sources, insignificant heat excess and fixed work places, the solution of this problem becomes more complicated because of the limited distances to the working area at the air supply by vertical jets In this connection, there is a need for development of new structural solutions for air disribution, which would at the same time provide creation of the necessary microclimate and saving of material and power resources. One of the ways of solving this problem is the use of a distributor for providing alternating mode, which supplies two air flows, each of which is characterized by rapid mixing of the inflowing and surrounding air Such streams include: non-coaxial inflowing jets, moving towards one another and coming into the working area as a resulting jet with standard parameters due to rapid attenuation of velocity and temperature [8]
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