Rahman, Arief (2022) Studi Eksperimen Pengaruh Lama Penyimpanan B100 dengan Penambahan Aditif Terhadap Sifat Bahan Bakar, Unjuk Kerja dan Emisi Mesin Diesel 4-Langkah Silinder Tunggal. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Biodiesel sebagai alternatif pengganti bahan bakar fosil memiliki sifat yang higroskopis, yakni kecendrungan untuk menyerap air dari lingkungan. Hal tersebut dapat menyebabkan tumbuhnya kontaminan mikroba serta perubahan sifat fisik dan kimia dari bahan bakar. Penambahan aditif kedalam campuran bahan bakar B100 diharapkan dapat meminimalkan perubahan properties fisik, kimia, performa mesin serta mampu memperbaiki emisi campuran bahan bakar B100. Maka dari itu dilakukan penelitian tentang pengaruh penambahan aditif pada campuran bahan bakar B100 terhadap fisik, kimia, kontaminan mikroba, dan dampak perubahan properties tersebut terhadap performa serta emisi mesin diesel.
Penelitian ini dimulai dengan menambah zat aditif Aderco dan Biocide pada bahan bakar B100. Kemudian disimpan pada tangki logam berkapasitas 50 liter. Penyimpanan dilakukan selama 12 minggu dan dilakukan pengujian terhadap properties bahan bakar, pertumbuhan kontaminan mikroba, performa dan emisi mesin diesel setiap 6 minggunya. Hasil yang didapatkan kemudian dibandingkan dengan bahan bakar B100 tanpa tambahan zat aditif.
Dari penilitian ini didapatkan bahwa penambahan aditif pada B100 setelah masa penyimpanan selama 12 minggu menyebabkan laju pertumbuhan kontaminan mikroba sebesar 1,14% pada B100+Aderco dan 5,53% pada B100+Biocide lebih lambat jika dibandingkan dengan B100 Murni. Demikian juga properties pada B100+Aderco dan B100+Biocide menunjukkan laju peningkatan yang lebih rendah dibandingkan B100 Murni, yakni masing-masing viskositas sebesar 7,17% dan 10,9%, densitas sebesar 0,56% dan 0,85%, bilangan asam sebesar 13,4% dan 22,73%. Penambahan aditif pada B100 juga menyebabkan perubahan terhadap performa mesin diesel, didapatkan laju penurunan efisiensi termal dibandingkan dengan B100 yaitu masing-masing sebesar 26,4% dan 24,45%, kemudian laju kenaikan BSFC yang lebih rendah dibandingkan B100, yaitu masing-masing sebesar 38,05% dan 33,89%. Sedangkan untuk emisi smoke menunjukkan laju penurunan yang lebih tinggi dibandingkan dengan B100, yaitu masing-masing sebesar 41,87% dan 47,35%.
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Biodiesel as an alternative to fossil fuels has hygroscopic properties, namely the tendency to absorb air from the environment. This can cause the growth of microbial contaminants and changes in the physical and chemical properties of the fuel. The addition of additives to the B100 fuel mixture is expected to result in changes in physical, chemical properties, engine performance, and able to improve emissions of the B100 fuel mixture. Therefore, a study was conducted on the effect of adding additives to the B100 fuel mixture on the physical, chemical, microbial contaminants, and the impact of these property changes on the performance and emissions of diesel engines.
This research was started by adding Aderco and Biocide additives to B100 fuel. Then stored in a metal tank with a capacity of 50 liters. Storage is carried out for 12 weeks and testing is carried out on fuel properties, microbial growth, performance and diesel engine emissions every 6 weeks. The results obtained are then compared with B100 fuel without additional additives.
After a storage period of 12 weeks, the results obtained on the B100+Aditive fuel have a microbial contaminant growth rate of 1,14% slower on B100+Aderco and 5,53% slower on B100+Biocide compared to B100. Then, for the properties of B100+Aderco and B100+Biocide also shows the smaller increase in the value of B100+Aderco and B100+Biocide on viscosity at 7.17% and 10,9% , density at 0,56% dan 0,85%, acid values at 13,4% and 22,73%, changes in these properties also have an impact on the decline in diesel engine performance. It shows that thermal efficiency decrease at 26,4% and 24,45%, BSFC increase at 38,05% and 33,89%, then a smoke decrease at 41,87% and 47,35% compared to B100.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Biodiesel, B100, Zat Aditif, Lama Penyimpanan, Mikroba, Performa Mesin Diesel, Additives, Storage, Diesel Performance |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ799 Diesel motor--Electronic control. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Arief Rahman |
| Date Deposited: | 11 Feb 2022 02:45 |
| Last Modified: | 02 Nov 2022 00:52 |
| URI: | http://repository.its.ac.id/id/eprint/93592 |
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