Irawan, Sakti Rangga (2022) Desain Dan Analisis Panel Acoustic Louvre Sebagai Pengendali Bising Pada Sistem Heating, Ventilating, And Air Conditioning (Hvac) Berbasis Passive Noise Control (PNC). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebisingan sistem penghawaan seringkali diabaikan akibat tujuan penggunaannya adalah untuk memberikan kenyamanan termal. Dari hal tersebut, dilakukan penelitian dalam upaya mereduksi kebisingan dengan menggunakan metode passive noise control (PNC) berupa penggunaan panel acoustic louvre. Panel acoustic louvre pada penelitian ini dianalisis kemampuannya dalam mereduksi kebisingan pada Sistem Heating, Ventilating, and Air Conditioning (HVAC) sehingga dapat menyalurkan udara segar dengan kemampuan mereduksi kebisingan ketika terdapat panel pada bagian outlet dari sistem HVAC. Metode pengukuran menggunakan linear rectangular ducting dengan sumber aliran udara berupa fan dan loudspeaker sebagai sumber bising. Variasi yang digunakan adalah louvre dengan 4 bilah, 5 bilah, dan 6 bilah. Performa akustik dianalisis berdasarkan parameter SPL dari fan, Transmission Loss (TL), Insertion Loss (IL) dan direktifitas SPL pada bagian outlet. Dengan menggunakan filter 1/3 oktaf pada rentang 20 hingga 8.000 Hz, nilai TL tertinggi untuk panel 6 bilah sebesar 21,9 dB pada frekuensi 63 Hz, IL mencapai 15,09 dB pada frekuensi 200 Hz, serta direktifitas yang cukup baik disekitar outlet. Perfoma mekanik dari louvre 6 bilah memiliki nilai pressure drop sekitar 24 Pa dengan distribusi temperatur udaranya masih optimal, sehingga pemasangan panel louvre cukup efektif dalam mereduksi kebisingan dengan dampak pada parameter mekanik masih optimal.
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Noise from Air conditioning system is often neglected due to the purpose of its use is to provide thermal comfort. From this, research was carried out to reduce noise by using the passive noise control (PNC) method with using an acoustic louvre panel. The acoustic louvre panel in this study was analyzed for its ability to reduce noise in the Heating, Ventilating, and Air Conditioning (HVAC) System so that it can distribute fresh air also reduced noise by the panel was installed at the outlet of the HVAC system. The measurement method uses a linear rectangular ducting with an inlet in the form of a fan as a source of airflow and a loudspeaker as a noise source. The variation used is a louvre with 4 blades, 5 blades, and 6 blades. Acoustic performance was analyzed based on the parameters of Transmission Loss (TL), Insertion Loss (IL) and directivity at the outlet. By using a 1/3 octave filter in the range of 20 to 8,000 Hz, the highest TL value is 22 dB at 63 Hz, IL reaches 15 dB at 200 Hz and the directivity is quite good around the outlet in the ducting. The mechanical performance of the louvre in the form of a pressure drop parameter of about 24 Pa with the air temperature distribution shows that there is no influence of thermal distribution along the HVAC system so that the installation of the louvre acoustic panel is quite effective in reducing noise with the impact of mechanical parameters being not too significant.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Acoustic Louvre, Insertion Loss, HVAC, Kebisingan, Transmission Loss, Acoustic Louvre, Insertion Loss, HVAC, Noise, Transmission Loss |
| Subjects: | Q Science > QC Physics > QC221 Acoustics. Sound |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 12 Dec 2025 04:02 |
| Last Modified: | 12 Dec 2025 04:02 |
| URI: | http://repository.its.ac.id/id/eprint/128947 |
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