Diagnosis of three types damages to the ventilation system
| 1 | Lviv Polytechnic National University |
| 2 | National University of Life and Environmental Sciences of Ukraine |
CORRESPONDING AUTHOR
Submission date: 2021-10-22
Final revision date: 2021-12-29
Acceptance date: 2022-01-03
Online publication date: 2022-01-11
Publication date: 2022-01-11
Diagnostyka 2022;23(1):2022102
KEYWORDS
TOPICS
ABSTRACT
The article is devoted to solving of urgent problem to eliminate damage in ventilation system. That is caused by non-adequate long range, stagnant unventilated areas in the room existance and high noise level in the premises at air distribution by swirled air flow, compact air jet, flat air stream and rectangular air jet. A noise level of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been investigated. It is shown that in order to achieve the maximum noise level decreasing it is necessary to ensure its supply by jets, which less intensively attenuate before entering the premise working area. Results of the experimental research are presented as graphical and analytical dependences. The acoustic properties of the swirled air flow, compact air jet, flat air stream and rectangular air jet have been investigated and means of situation improving have been determined. The results of experimental research of air supply to the room are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets noise level decreases.
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