Investigation of the Return Flow at the Air Distribution by Swirl and Flat Laying Air Jets in Small-Sized Premises

Abstract

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 purpose of the work is to study the nature of the propagation of the swirl and flat flooring jets in a limited space of a production space of low height with the presence of technological equipment and maintenance personnel in it, to identify the patterns of development of the air tidal stream in the reverse flow and to justify the calculation methodology. The quantitative description of the characteristics and regularities of the development of the swirl and flat flooring compressed jets in the reverse flow is established. Calculation dependences were obtained for determining the parameters of the swirl and flat flooring compressed jets in the reverse flow. It is substantiated that the efficiency of the application of the swirl and flat flooring jets to supply air to the working area of the technological premises is high. The obtained results allow us to calculate the initial velocity of the swirl and tidal flat flooring compressed stream in a small-sized production rooms with the presence of technological equipment and service personnel and to determine the geometric parameters of the air distribution device. Application of air distribution with the use of the swirl and flat air jet laying effect allows to significantly increase the Air Distribution Performance Index criteria when supplying a big amount of air to the technological premises and thereby reducing the material consumption of the ventilation system.