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Abstract
At present, the noise problem is already widely discussed and identified as a priority to ensure human health and the prevention of occupational diseases. We understand acoustic field management as a targeted use of actions and tools to change field parameters or characteristics. In general, the most effective effects on the fields are the elimination of their generation conditions. In this work the vibration analysis of the recuperators was performed, the limits of the vibration parameters were determined and the correlation between the vibration activity of the device and the sound pressure level in the near environment was determined. After the design of the fan partitions and the airflow excitation of the fans with respect to vibration parameters, it was found that the above mentioned structural changes allowed to reduce the average total weighted sound pressure level in the vicinity by 8%.
Highlights
At present, the noise problem is already widely discussed and identified as a priority to ensure human health and the prevention of occupational diseases
In order to determine the correlation between the vibration activity of the mechanical equipment (AHU) and the acoustic noise in its environment, sound pressure and acoustic intensity in one-third octave frequency bands under different fan operating modes were measured and the limits of total sound pressure variation were determined
By means of a vibroacoustic experiment, a correlation was found between the interior elements of the analysis of the recuperators (AHU) body, the surface vibration activity and the sound pressure level in the surrounding environment
Summary
The noise problem is already widely discussed and identified as a priority to ensure human health and the prevention of occupational diseases. The management of acoustic fields is ensured by the product certification system, conformity assessment, declaration of acoustic parameters [13] and other actions [4,5,6,7,8] that encourage the manufacturer to take care of the reduction of the generated acoustic noise. This affects the process of equipment design and production and for equipment in operation as well. Air fan, 5 is the mounting wall of air intake fan, 6 is the frame of air intake fan, 7 is the inside side on right, 8 is the inside side on left
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