Permana, Agung Chandra (2019) Pengaruh Variasi Suhu Pirolisis Terhadap Perpindahan Panas dan Solid Yields Pada Proses Pirolisis Bambu (Bambusa blumeana). Sarjana thesis, Universitas Brawijaya.
Abstract
Bambu merupakan salah satu biomassa yang dapat digunakan sebagai alternatif BBM melalui pengolahan dengan cara pirolisis. Salah satu faktor yang mempengaruhi proses pirolisis adalah suhu pirolisis,dimana didalamnya terjadi mekanisme perpindahan panas yang berpengaruh juga terhadap produk hasil pirolisis bambu yang berupa liquid (tar), padatan (char), dan gas bergantung dari suhu operasi yang digunakan. Tujuan dari penelitian ini adalah mengetahui pengaruh perpindahan panas terhadap pyrolysis yields selama proses pirolisis bambu. Metode penelitian yang digunakan adalah secara eksperimental. Serbuk bambu seberat 1200 gram diumpankan ke dalam tabung furnace dan dilakukan proses pirolisis selama 120 menit dengan memvariasikan suhu operasi pirolisis yaitu 250oC, 350oC, 450oC, 550oC, dan 650oC. Dari hasil pirolisis ini didapatkan hubungan antara suhu operasi dan waktu pirolisis, dimana menunjukan semakin lama waktu pirolisis maka didapatkan temperatur pada biomassa yang terus meningkat. Selain itu didapatkan penggambaran kontur perpindahan panas untuk tiap suhu operasi, hubungan suhu operasi dengan massa dan volume yields, hubungan antara perpindahan panas terhadap volume dan perubahan massa yields. Proses perpindahan panas pada suhu 250oC dan 350 oC lebih lambat dibanding suhu operasi 450 oC,550 oC dan 650 oC yang dikarenakan pada suhu pirolisis yang rendah selisih perbedaan temperatur kecil,sehingga perpindahan yang terjadi juga kecil. Proses perpindahan panas terjadi mulai dari sekitar dinding furnace dimana tempat pemanas berada lalu panas merambat hingga ke bagian tengah tabung furnace. Namun didalam perambatan panas terdapat fenomena diamana panas merambat dari bagian bawah tabung yang dipengaruhi nilai konduktivitas termal dari bahan tabung tersebut, nilai konduktivitas termal bambu yang kecil membuat proses perpindahan panas dalam biomassa menjadi kecil. Selama proses pirolisis, semakin tinggi suhu operasi, maka massa dan volume yields yang diperoleh akan semakin menurun akibat adanya dekomposisi material. Didalam penelitian ini dilakukan analisa perubahan volume yang didapatkan perubahan volume yang banyak terjadi pada menit 50 hingga 80 selama proses pirolisis.
English Abstract
Bamboo is one of the biomass that can be used as an alternative fuel through processing by pyrolysis. One of the factors that influence the pyrolysis process is the temperature of pyrolysis, in which a heat transfer mechanism occurs which also influences the product of bamboo pyrolysis in the form of liquid (tar), solid (char), and gas depending on the operating temperature used. The purpose of this study was to determine the effect of heat transfer on pyrolysis yields during the bamboo pyrolysis process. The research method used is experimental. 1200 grams of bamboo powder is fed into the furnace tube and the pyrolysis process is carried out for 120 minutes by varying the pyrolysis operating temperature of 250oC, 350oC, 450oC, 550oC, and 650oC. From the results of pyrolysis, there is a relationship between operating temperature and pyrolysis time, which shows that the longer the pyrolysis time, the higher the biomass temperature. In addition, the heat transfer contour is drawn for each operating temperature, the relationship of operating temperature to mass and volume yields, the relationship between heat transfer to volume and change in mass yields. The heat transfer process at temperatures of 250oC and 350oC is slower than the operating temperature of 450 oC, 550 oC and 650 oC due to the low pyrolysis temperature difference in small temperature differences, so that the displacement that occurs is also small. The process of heat transfer starts from around the wall of the furnace where the heater is located then the heat propagates to the center of the tube furnace. But in the heat propagation there is a phenomenon where heat propagates from the bottom of the tube which is influenced by the thermal conductivity value of the tube material, the small thermal conductivity value of bamboo makes the process of heat transfer in biomass to be small. During the pyrolysis process, the higher the operating temperature, the mass and volume of yields obtained will decrease due to material decomposition. In this study an analysis of volume changes was obtained which resulted in a large volume change occurring at 50 to 80 minutes during the pyrolysis process.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2019/470/051905066 |
| Uncontrolled Keywords: | bambu, perpindahan panas,pirolisis, pyrolysis yields, bamboo, heat transfer, pyrolysis, pyrolysis yields |
| Subjects: | 600 Technology (Applied sciences) > 620 Engineering and allied operations > 620.1 Engineering mechanics and materials > 620.11 Engineering materials > 620.112 Properties of materials and nondestructive testing > 620.112 1 Resistance to thermal forces > 620.112 15 Changes in temperature |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 31 Oct 2020 07:18 |
| Last Modified: | 31 Oct 2020 07:18 |
| URI: | http://repository.ub.ac.id/id/eprint/173063 |
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