Amdani, Akhmad (2023) Analisa Pengaruh Penggunaan Bahan Bakar Multibiodiesel B50 (B35 Pertamina – Minyak Biji Nyamplung) Terhadap Performa Dan Emisi Pada Mesin Diesel Satu Silinder Berbasis Eksperimen. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Produktifitas biji jarak, biji karet sebagai salah satu bahan baku pembuatan biodiesel masih kalah bila dibandingkan dengan nyamplung yang menghasilkan sekitar 20 ton/hektar. Selain produktifitasnya nyamplung memiliki kandungan rendemen minyak sekitar 40-73%. Berdasarkan kelebihan dari tanaman nyamplung, peneliti menambahkan biodiesel minyak nyamplung kedalam B35 pertamina menjadi B50 multi dengan tujuan untuk mengetahui perbedaan karakteristik bahan bakar setelah penambahan minyak nyamplung dan performa serta emisi NOx yang dihasilkan mesin diesel akibat penggunaan bahan bakar B50 multi. Penelitian ini berbasis eksperimen dengan menggunakan mesin Yanmar Tf 85. Proses pembuatan bahan bakar B50 multi menggunakan metode pencampuran antara B35 dengan B100 nyamplung dengan komposisi 10:3. Pengujian nilai densitas, viskositas, flash point dan nilai kalor menjadi variabel uji karakteristik bahan bakar. Pengujian performa dilakukan dengan membandingkan SFOC, daya dan torsi yang dihasilkan dari mesin diesel. Dari hasil penelitian didapatkan bahwa penambahan biodiesel nyamplung pada B35 pertamina menyebabkan kenaikan nilai densitas dan viskositas sebesar 1,83% dan 3,77%, sedangkan pada bahan bakar B50 sawit nilai densitas dan viskositas mengalami kenaikan sebesar 0,54% dan 2,55%. Flash point dan nilai kalor dari B50 multi mengalami penurunan sebesar 28% dan 2,39%, sedangkan B50 sawit mengalami kenaikan flash poin sebesar 11,6% dan mengalami penurunan nilai kalor sebesar 2,84%. Daya yang dihasilkan dari penggunaan bahan bakar B50-multi tidak jauh beda dengan penggunaan bahan bakar B50 sawit. Daya yang dihasilkan bahan bakar B50 multi memiliki rataan sebesar 2,1523 kW dan daya yang dihasilkan bahan bakar B50 sawit memiliki rataan 2,1575 kW. Torsi yang dihasilkan juga tidak mengalami perbedaan yang signifikan. B50 multi memiliki rataan sekitar 11,7176 Nm sedangkan B50 sawit menghasilkan torsi dengan raatan sekitar 11,7291 Nm. Akan tetapi penggunaan bahan bakar dari B50 multi meiliki nilai yang lebih tinggi dari B50 sawit dengan nilai rataan sekitar 348,46g/kWh sedangkan B50 sawit memiliki nilai rataan sekitar 344,11 g/kWh. Dengan kondisi yang ada mengindikasikan performa akibat pengguna bahan bakar B50-multi tidak lebih baik dari bahan bakar B50 sawit. Emisi NOx yang dihasilkan oleh mesin diesel Yanmar TF 85 MH dengan menggunakan bahan bakar B5-multi lebih kecil dari pada bahan bakar B50 sawit. Emisi NOx B50 multi sebesar 0,946 g/kWh sedangkan B50 sawit menghasilkan emisi NOx sebesar 0,958 g/kWh.
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The productivity of jatropha and rubber seeds as biodiesel raw materials is still lower compared to Nyamplung, which yields around 20 tons per hectare. In addition to its productivity, Nyamplung also contains an oil yield ranging from 40-73%. Based on the advantages of Nyamplung, researchers added Nyamplung biodiesel to Pertamina's B35 to create B50 Multi with the aim of determining the differences in fuel characteristics, engine performance, and emissions resulting from the use of B50 Multi fuel. This research was conducted experimentally using a Yanmar TF 85 engine. The process of producing B50 multi fuel involves the mixing method between B35 and B100 Nyamplung with a composition of 10:3. Testing the density, viscosity, flash point, and calorific value became the variables to examine the fuel characteristics. The performance test was done by comparing SFOC, power, and torque generated by the diesel engine. Meanwhile, the emissions tested as a result of using biodiesel were only NOx emissions. The research findings revealed that the addition of Nyamplung biodiesel to Pertamina's B35 resulted in an increase in density and viscosity by 1.83% and 3.77%, respectively, while B50 Palm fuel experienced an increase in density and viscosity by 0.54% and 2.55%, respectively. The flash point and calorific value of B50 Multi decreased by 28% and 2.39%, respectively, while B50 Palm experienced an 11.6% increase in flash point and a 2.84% decrease in calorific value. The power generated from using B50 Multi fuel did not differ significantly from using B50 Palm fuel. The average power output of B50 Multi was approximately 2.1523 kW, and B50 Palm produced an average power output of 2.1575 kW. The torque produced also showed no significant difference. B50 Multi had an average of around 11.7176 Nm, while B50 Palm had an average torque of around 11.7291 Nm. However, the use of B50 Multi fuel had a slightly higher value than B50 Palm with an average value of approximately 348.46 g/kWh, while B50 Palm had an average value of approximately 344.11 g/kWh. Given the current conditions, the performance resulting from the use of B50 Multi fuel is not better than B50 Palm fuel. The NOx emissions produced by the Yanmar TF 85 MH diesel engine using B5 Multi fuel were lower than those using B50 Palm fuel. The NOx emissions from B50 Multi fuel were 0.946 g/kWh, while B50 Palm fuel produced NOx emissions of 0.958
g/kWh.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | B50-multi, Karakteristik, Performa, Emisi NOx, B50-Multi, Characteristic, Performance, Emission NOx |
| Subjects: | V Naval Science > V Naval Science (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Akhmad Amdani |
| Date Deposited: | 25 Aug 2023 02:46 |
| Last Modified: | 25 Aug 2023 02:46 |
| URI: | http://repository.its.ac.id/id/eprint/103083 |
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