Nugroho, Dimas Augie (2024) ANALISA KARAKTERISTIK TERMOFLUIDA PROSES PEMBAKARAN INCINERATOR DENGAN METODE COMPUTATIONAL FLUID DYNAMICS (CFD). S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.

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Abstract

Incineration is a waste processing technology by burning at high temperatures which aims to convert it into heat energy. An optimal combustion reaction requires ideally mixing fuel and air obtained from a secondary air supply. Computational Fluid Dynamics (CFD) is a method for analyzing and predicting dynamic fluid movements including transfer phenomena, thermal energy transfer processes, and chemical reactions that occur. This study aims to analyze the simulation results of the effect of variations in secondary air flow velocity of 6.81 m/s, 8.76 m/s, and 9.8 m/s on the thermofluidic characteristics of the incineration process and their effect on greenhouse gas pollutant levels produced using the CFD method. The simulation was carried out with steady flow settings using a Non-Premixed Combustion model with fuel content adjusted to the ultimate value and proximate analysis of municipal solid waste. The results showed that the greater the flow speed of secondary air, the combustion temperature will decrease, resulting in lower energy produced and increasing the concentration of exhaust gas pollutants. Therefore, it can be seen that the incineration process with an secondary air velocity variation of 6.81 m/s is the best choice that produces a maximum temperature of 1541 K, with a combustion energy of 15.1 kWh, and a average concentration of exhaust gas pollutants NO 426 mg/Nm3, CO 73,816 mg/Nm3, and SO2 1,288 mg/Nm3. The concentration value of these pollutants is still below the maximum government limit regulated in Minister of Environment and Forestry No. 70 of 2016.

Item Type:	Thesis (S1)
Contributors:	Contribution Contributors NIP/NIM Thesis advisor SUDRAJAD, AGUNG 0015057510 Thesis advisor WAHYUDI, HADI 0016017103
Additional Information:	Insinerasi merupakan teknologi pengolahan sampah dengan cara dibakar pada temperatur tinggi yang bertujuan untuk mengubahnya menjadi energi panas. Reaksi pembakaran yang optimal memerlukan pencampuran bahan bakar dan udara secara ideal yang didapat dari suplai udara sekunder. Computational Fluid dynamics (CFD) merupakan metode untuk menganalisis dan memprediksi pergerakan fluida dinamis termasuk fenomena transfer, proses perpindahan energi termal, dan reaksi kimia yang terjadi. Penelitian ini bertujuan untuk menganalisis hasil simulasi pengaruh variasi kecepatan aliran udara sebesar 6,81 m/s, 8,76 m/s, dan 9,8 m/s terhadap karakteristik termofluida dari proses insinerasi serta pengaruhnya terhadap kadar polutan gas rumah kaca yang dihasilkan dengan menggunakan metode CFD. Simulasi dilakukan dengan pengaturan aliran secara steady menggunakan model pembakaran Non-Premixed Combustion dengan kandungan bahan bakar yang disesuaikan dengan nilai ultimate dan proximate analysis sampah padat kota (municipal solid waste). Hasil penelitian menunjukkan bahwa semakin besar kecepatan aliran secondary air, maka temperatur pembakarannya akan menurun sehingga mengakibatkan energi yang dihasilkan semakin rendah dan meningkatkan konsentrasi polutan gas buang. Oleh karena itu, dapat diketahui bahwa proses insinerasi dengan variasi kecepatan udara 6,81 m/s merupakan pilihan terbaik yang menghasilkan temperatur maksimum 1541 K, dengan energi pembakaran 15,1 kWh, serta nilai rata-rata konsentrasi polutan gas buang NO 426 mg/Nm3, CO 73,816 mg/Nm3, dan SO2 1,288 mg/Nm3. Nilai tersebut merupakan kadar konsentrasi polutan terendah yang masih di bawah nilai ambang batas yang diatur dalam Permen LHK No. 70 tahun 2016.
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	03-Fakultas Teknik
Depositing User:	Dimas Augie Nugroho
Date Deposited:	01 Aug 2024 14:10
Last Modified:	16 Aug 2024 11:43
URI:	http://eprints.untirta.ac.id/id/eprint/39974

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