Investigation of vibroactivity of the mechanical equipment aiming to reduce emitting noise

  • Robertas MIKALAUSKAS Kaunas University of Technology; Klaipeda State University of Applied Sciences, Faculty of Technologies
  • Vitalijus VOLKOVAS Kaunas University of Technology
  • Ernestas ULDINSKAS Kaunas University of Technology
Keywords: noise control, AHU, vibration, structure


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%.