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Evaluation of noise of ventilation outlet for a passenger car cabine
Libřický, Stanislav ; Vaňková, Marie (referee) ; Jedelský, Jan (advisor)
The thesis deals with issues of noise ventilation outlets in a passenger car. There is a description of the noise reduction in the acoustic background, optimizing experimental measurement methodology and familiarization with measuring equipment. The next step includes measuring of individual outlet options, results post-processing and comparison of tested alternatives. Based on these results the best variants are chosen and measures for decreasing noise in the ventilation outlets are proposed.
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Noise and vibrations in air-conditioning systems
Libřický, Stanislav ; Hejčík, Jiří (referee) ; Jedelský, Jan (advisor)
This bachelor’s thesis is focused on the sources of noise in air-conditioning equipment and potential noise reduction. The thesis also includes a detailed list of the sources of noise. Thoroughly describes only the main ones, which the fans, aerodynamic noise of air conduit and chillers. The thesis continues with description of methods of the reduction of selected causes of noise in a certain environment. The final part of the bachelor’s thesis includes listing and description of laws and regulations affecting issue of noise in air-conditioning equipment.
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Evaluation of noise of ventilation outlet for a passenger car cabine
Libřický, Stanislav ; Vaňková, Marie (referee) ; Jedelský, Jan (advisor)
The thesis deals with issues of noise ventilation outlets in a passenger car. There is a description of the noise reduction in the acoustic background, optimizing experimental measurement methodology and familiarization with measuring equipment. The next step includes measuring of individual outlet options, results post-processing and comparison of tested alternatives. Based on these results the best variants are chosen and measures for decreasing noise in the ventilation outlets are proposed.
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Noise and vibrations in air-conditioning systems
Libřický, Stanislav ; Hejčík, Jiří (referee) ; Jedelský, Jan (advisor)
This bachelor’s thesis is focused on the sources of noise in air-conditioning equipment and potential noise reduction. The thesis also includes a detailed list of the sources of noise. Thoroughly describes only the main ones, which the fans, aerodynamic noise of air conduit and chillers. The thesis continues with description of methods of the reduction of selected causes of noise in a certain environment. The final part of the bachelor’s thesis includes listing and description of laws and regulations affecting issue of noise in air-conditioning equipment.
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