Studi Eksperimen Pengaruh Sistem EGR (Exhaust Gas Recirculation) Terhadap Performa Dan Emisi Mesin Diesel Dual-Fuel Berbahan Bakar Biodiesel B-100 Dan Hidrogen

Suryaputra, Fauzan Dzaky (2023) Studi Eksperimen Pengaruh Sistem EGR (Exhaust Gas Recirculation) Terhadap Performa Dan Emisi Mesin Diesel Dual-Fuel Berbahan Bakar Biodiesel B-100 Dan Hidrogen. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Meningkatnya kebutuhan energi berdampak buruk terhadap lingkungan, terutama ketika kebutuhan energi tersebut didominasi bahan bakar minyak. Hasil pembakaran BBM menghasilkan emisi yang menyebabkan pencemaran lingkungan. Untuk mengurangi pencemaran lingkungan dan tetap memenuhi kebutuhan energi, dibutuhkan sumber energi baru dan terbarukan. Salah satu sumber energi baru dan terbarukan yang lebih ramah lingkungan adalah dengan menggantikan BBM diesel dengan biodiesel pada mesin CI. Selain itu, juga dapat ditambahkan bahan bakar hidrogen sebagai bahan bakar bebas karbon. Namun penggunaan bahan bakar tersebut menyebabkan emisi NOx yang berbahaya meningkat. Salah satu cara untuk mengurangi emisi NOx adalah menggunakan sistem EGR. Penelitian ini dilakukan untuk mengetahui performa dan emisi mesin diesel dual fuel dengan bahan bakar biodiesel B100 dan hidrogen dengan variasi rasio EGR 0%, 5%, 10%, 15%, 20%, dan 25% pada rentang beban 1000-4000watt. Dari penelitian ini didapatkan bahwa penambahan sistem EGR pada mesin diesel dual fuel berbahan bakar biodiesel B100-hidrogen dapat meningkatkan performa mesin. Rasio EGR yang optimal terdapat pada rasio 10% pada beban 3000 watt dengan daya sebesar sebesar 3509,71 watt, torsi sebesar 16,77 Nm, dan BMEP sebesar 4,27 bar. Pada performa optimal terjadi kenaikan rata-rata terhadap rasio EGR 0% pada BTE sebesar 1,06% dan mengalami penurunan SFC sebesar 0,12%. Penambahan sistem EGR pada mesin cenderung meningkatkan emisi CO2 dan menurunkan O2. Penambahan sistem EGR dapat menurunkan emisi NOx dengan rata-rata penurunan 52,3% dibandingkan tanpa EGR. Dengan semakin meningkatnya rasio EGR semakin besar pengurangan emisi NOx. Sebaliknya, dengan penambahan rasio EGR kepekatan asap gas buang mesin (smoke opacity) semakin tinggi.
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Energy demand increase has a detrimental impact on the environment, particularly with fossil fuels as one of the main energy sources. The combustion of fossil fuels results in emissions that cause environmental pollution. To reduce pollution while still meeting energy needs, renewable energy sources are needed. One way to use environmentally friendly energy source is replacing diesel fuel with biodiesel in CI engines. Additionally, hydrogen fuel can be added as a carbon-free fuel. However, the use of these fuels leads to an increase in harmful NOx emissions. One way to reduce NOx emissions is by using an Exhaust Gas Recirculation (EGR) system. This study aims to investigate the performance and emissions of a dual-fuel diesel engine using B100 biodiesel and hydrogen fuel with varying EGR ratios of 0%, 5%, 10%, 15%, 20%, and 25% within a load range of 1000-4000 watts. From this study it was found that the addition of EGR system on a diesel dual fuel engine with B100 biodiesel-hydrogen fuel can improve the engine’s performance. The optimal EGR ratio is found at a ratio of 10% at 3000 watts of load with a power of 3509.71 watts, a torque of 16.77 Nm, and a BMEP of 4.27 bar. At optimal performance, there is an average increase from the 0% EGR ratio for BTE of 1.06% and a decrease in SFC of 0.12%. The addition of the EGR system to the engine tends to increase CO2 emissions and reduce O2. The addition of the EGR system can reduce NOx emissions by an average reduction of 52.3% compared to no EGR. As the EGR ratio increases, the absorption of NOx emissions increases. In contrast, with the addition of the EGR ratio, the smoke opacity of the engine exhaust is higher.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Mesin Diesel Dual-Fuel, Biodiesel, Hidrogen, EGR
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL229.D5 Diesel automobiles
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Fauzan Dzaky Suryaputra
Date Deposited:	07 Aug 2023 07:04
Last Modified:	07 Aug 2023 07:04
URI:	http://repository.its.ac.id/id/eprint/103346

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