Firda, Jamiatul (2023) Evaluasi Kebisingan Suara Genset dengan Adanya Penggunaan Muffler pada Pipa Gas Buang Terhadap Lingkungan Sekitar Ruang Genset. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Bising pada gas buang genset diakibatkan karena aliran fluida yang mengalir dengan kecepatan dan tekanan tinggi yang terpancar ke lingkungan sekitarnya. Bising dari gas buang akibat aliran tersebut mengasilkan bising dengan karakteristik respon frekuensi yang dominan pada frekuensi tinggi. Bising yang memiliki karakteristik dominan pada frekuensi tinggi, dapat mengganggu pendengar yang terpapar bising tersebut. Karena telinga manusia sensitif terhadap frekuensi tinggi. Salah satu metode paling efektif untuk mengurangi bising gas buang yang memiliki karakteristik dominan di frekuensi tinggi adalah dengan penambahan muffler pada pipa gas buang genset. Muffler absorptif digunakan untuk meredam bising pada pipa gas buang, karena dapat mengurangi bising lebih tinggi di frekuensi tinggi. Muffler absorptif yang digunakan terdiri dari material glass wool yang memiliki massa jenis 30 kg/m3. Muffler yang terpasang pada pipa gas buang dievaluasi pada penelitian ini, dengan melakukan pengukuran bising yang dilakukan pada sumber bising gas buang dan juga pengukuran di lingkungan sekitarnya yang terdampak oleh bisingnya. Selain itu, juga dilakukan survei untuk mengetahui annoyance index terhadap bising gas buang genset dengan terdapat total 99 responden yang terpapar langsung oleh bising tersebut. Hasilnya, menunjukkan bahwa dengan adanya muffler absorptif, bising dapat tereduksi sebesar 10 dBA, dan meredam lebih besar pada frekuensi tinggi (500-16000 Hz) pada sumber bisingnya dan juga di lingkungan sekitarnya (ruang kelas dan ruang dosen). Annoyance index terhadap bising gas buang genset berada dalam tingkat moderately (sedang) hingga sangat mengganggu pada pendengar yang di luar ruangan dan tingkat moderately mengganggu pada pendengar di dalam ruangan
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Noise in the generator exhaust gas is caused by the flow of fluid flowing at high speed and pressure that radiates into the surrounding environment. The noise from the exhaust gas due to the flow produces noise with a dominant frequency response characteristic at high frequencies. Noise that has dominant characteristics at high frequencies can disturb listeners who are exposed to the noise. Because the human ear is sensitive to high frequencies. One of the most effective methods for reducing exhaust noise which has dominant characteristics at high frequencies is by adding a muffler to the exhaust pipe of the generator. Absorptive mufflers are used to reduce noise in the exhaust pipe, because they can reduce noise at higher frequencies. The absorptive muffler used consists of glass wool material which has a density of 30 kg/m3. The muffler attached to the exhaust pipe was evaluated in this study, by measuring the noise at the source of the exhaust noise and also measuring the surrounding environment which is affected by the noise. In addition, a survey was also conducted to determine the annoyance index of generator exhaust noise with a total of 99 respondents who were directly exposed to the noise. The results show that with an absorptive muffler, noise can be reduced by 10 dBA, and attenuates more at high frequencies (500-16000 Hz) at the noise source and also in the surrounding environment (classrooms and lecturer rooms). The annoyance index for generator exhaust gas noise is moderately (moderate) to very disturbing to listeners outside the room and moderately disturbing to listeners indoors
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | bising gas buang genset, muffler, annoyance index; generator exhaust noise, muffler, annoyance index |
Subjects: | Q Science > QC Physics > QC221 Acoustics. Sound |
Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
Depositing User: | Jamiatul Firda |
Date Deposited: | 23 Aug 2023 01:45 |
Last Modified: | 23 Aug 2023 01:45 |
URI: | http://repository.its.ac.id/id/eprint/104174 |
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