Perdana, Bhima Poetra (2019) Karakteristik Unjuk Kerja Mesin Diesel Dual Fuel Biodiesel-Syngas Hasil Gasifikasi Multistage Menggunakan Pellet Municipal Solid Waste(MSW) Dengan Variasi Mass Flow Rate Menggunakan Electric Supercharger. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pemasukan bahan bakar gasifikasi syngas dapat menggunakan sistem pemasukan model mixer. Model ini bekerja dengan mencampur udara, bahan bakar, dan gas menggunakan mixer sebelum memasuki saluran hisap (intake). Digunakan electric supercharger yang berfungsi meningkatkan tekanan udara masuk dimana berpengaruh terhadap mass flowrate syngas yang masuk ke dalam ruang bakar.
Karakterisasi unjuk kerja sistem dual-fuel ini dilakukan dengan mengoperasikan mesin diesel pada putaran konstan 2000 rpm dan pembebanan dari 200 W hingga 2000 W dengan interval 200 W. Sistem pemasukan syngas menggunakan mixer venturi secara langsung dari reaktor syngas yang alirannya dianggap konstan untuk setiap pembebanan pada setiap variasi. Keberadaan syngas pada ruang bakar menyebabkan penurunan nilai AFR akibat syngas yang di masukan melalui intake udara mengurangi pasokan udara yang diperlukan mesin sehingga perlu ditambahkan electric supercharger untuk menaikan suplai udara agar AFR dual fuel mendekati AFR single fuel. Electric supercharger diatur kecepatannya berdasarkan selisih yang didapatkan dari AFR single fuel dan AFR dual fuel. Pengukuran dilakukan terhadap: arus dan tegangan listrik tiap pembebanan, waktu konsumsi bahan bakar biodiesel 10 ml, temperatur operasi: gas buang, oli mesin, pendingin radiator serta temperatur mesin.
Hasil dari peneliatian ini adalah, terjadi kenaikan Daya, Torsi, dan BMEP pada setiap kenaikan beban, tetapi nilai konstan pada setiap masing-masing variasi karena putaran mesin pada pengujian dibuat konstan. Pada penambahan mass flow rate (ṁ) udara menggunakan supercharger, akan diikuti oleh peningkatan mass flow rate (ṁ) syngas yang masuk sampai pada titik maksimum kondisi mass flow rate (ṁ) udara 0,015216 kg/s. Nilai spesific fuel consumption (sfc) biodiesel rata-rata mengalami penurunan tertinggi sebesar 14.01 % dibandingkan single fuel pada kondisi penambahan mass flow rate (ṁ) udara dual fuel. Diesel dual-fuel dengan penambahan mass flow rate (ṁ) udara dapat menaikan AFR rata-rata mendekati AFR single fuel dengan rata-rata perbedaan terdekat 2.21%. Rata-rata effisiensi thermal sistem dual-fuel mengalami peningkatan tertinggi sebesar 11.5 % dibandingkan single fuel pada kondisi penambahan mass flow rate (ṁ) udara dual fuel. Nilai dari rata-rata energi input per siklus pada sistem dual-fuel mengalami peningkatan tertinggi sebesar 36.92% dibandingkan single fuel pada kondisi penambahan mass flow rate (ṁ) udara 0,015216 kg/s.
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Intake fuel gasification syngas can use infusion system
model mixer. This model works by mixing air, fuel, and gas using
the mixer before it enters the suction duct (intake). Used electric
supercharger which function increase the incoming air pressure
which affects mass flowrate syngas that enter into the combustion
chamber.
Performance characterization of a dual-fuel system is
done by operating a diesel engine on a constant round of 2000
rpm and the imposition of a 200 W to 2000 W with intervals of
200 w. syngas using infusion System venturi mixer directly from
the syngas flow reactor is considered constant for any imposition
on each variation. The existence of the syngas on the combustion
chamber causes a decrease in value due to a syngas in AFR input
via the air intake reduces the air supply necessary needs to be
added so that the machine electric supercharger to increase the
air supply so AFR dual fuel approaching the AFR single fuel.
Electric supercharger set its velocity based on difference of AFR
single fuel and AFR dual fuel. Measurement of voltage and
current: each load, the time consumption of biodiesel fuel 10 ml,
operating temperature: exhaust gas, engine oil cooler, radiator
and engine temperature.
The result of this experiment, there is a rise in power,
torque, and increase the load on each BMEP, but constant value on each variation due to the rotation of the engine on the test
made constant. On the addition of the mass flow rate (ṁ) of air
using supercharger, will be followed by increased mass flow rate
(ṁ) or syngas that went up at the point of maximum conditions of
mass flow rate (ṁ) of air at 0.015216 kg/s specific fuel
consumption values (sfc) biodiesel the average experienced the
highest loss of 14.01% compared to single fuel on condition the
addition of mass flow rate (ṁ) of air in dual fuel condition. Diesel
dual-fuel with the addition of mass flow rate (ṁ) of air can raise
the average AFR approached AFR single fuel with an average
difference of nearest 2.21%. The average thermal efficiency in a
dual-fuel system experience the highest increase of 11.5% over
the single fuel on condition the addition of mass flow rate (ṁ) of
air in dual fuel condition. Average value from the energy input
per cycle on a dual-fuel system experience the highest increase of
36.92% compared to single fuel on condition the addition of mass
flow rate (ṁ) of air at 0.015216 kg/s condition.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 621.436 1 Per k-1 2019 |
| Uncontrolled Keywords: | diesel dual-fuel, syngas, biodiesel |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ785 Internal combustion engines. Spark ignition T Technology > TJ Mechanical engineering and machinery > TJ799 Diesel motor--Electronic control. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Bhima Poetra Perdana |
| Date Deposited: | 02 Feb 2022 02:26 |
| Last Modified: | 02 Feb 2022 02:26 |
| URI: | http://repository.its.ac.id/id/eprint/62087 |
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