Desain Gas Burner Pada Mini Plant Boiler Di Workshop Instrumentasi

Aristio, Rinaldi (2016) Desain Gas Burner Pada Mini Plant Boiler Di Workshop Instrumentasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tujuan dari penelitian ini adalah mendesain burner pada mini plant boiler di workshop instrumentasi dan mengetahui performanya dengan menggunakan variasi diameter dan excess air factor. Burner yang didesain menggunakan tipe non-premixed burner dengan penambahan swirler. Performa burner didapatkan dari simulasi CFD menggunakan model Eddy Dissipation Model (EDM) dengan parameter turbulensi Realizable k-epsilon. Analisa hasil simulasi yang dilakukan adalah pengaruh variasi diameter terhadap kontur temperatur dan pengaruh variasi excess air factor terhadap fraksi massa emisi gas buang dan efisiensi pembakaran. Pengurangan diamater nozzle menyebabkan panjang area temperatur adiabatik semakin panjang dan meningkatkan temperatur pada boiler. Peningkatan variasi excess air factor menyebabkan penurunan tempeatur, fraksi massa emisi NOx, CO dan hidrokarbon (CH4) pada setiap model diameter. Pada penelitian ini performa burner terbaik dihasilkan oleh variasi diameter 0.6 cm dengan nilai excess air factor λ = 1.4 dengan hasil temperatur gas buang sebesar 1086.01 K dengan fraksi massa NOx 1.36.10-5, fraksi massa hidrokarbon (CH4) sebesar 2.59x10-12, fraksi massa CO sebesar 2.87x10-9 dan efisiensi pembakaran 93.8%. =================================================================================== The purpose of this study was to design a mini-burner on the boiler plant at the workshop instrumentation and knowing performance by using variation of diameter and excess air factor. Burner is designed using a type of non-premixed burner with swirler additions. Burner performance obtained from CFD simulations using models Eddy Dissipation Model (EDM) with parameters realizable k-epsilon turbulence. Analysis of the simulation results are the influence of diameter variation toward temperature contour and influence of excess air factor toward mass fraction of exhaust emissions and combustion efficiency. Reduction of nozzle diameter length result in adiabatic temperature area getting longer and increases the temperature of the boiler. Increased variation excess air factor result in decrease tempeatur, mass fraction emissions of NOx, CO and hydrocarbons (CH4) on every model diameter. In this study, the best burner performance generated by variation in the diameter 0.6 cm and excess air factor λ = 1.4 with the results of exhaust gas temperature of 1086.01 K with 1.36.10-5 NOx mass fraction, mass fraction of hydrocarbons (CH4) of 2.59x10-12, CO mass fraction of 2.87x10-9 and 93.8% combustion efficiency.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 621.193 Ari d
Uncontrolled Keywords: excess air factor, eddy dissipation model, nonpremixed burner, CFD
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction
Divisions: Faculty of Industrial Technology > Physics Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Anis Wulandari
Date Deposited: 14 Jul 2017 05:25
Last Modified: 26 Dec 2018 04:01
URI: http://repository.its.ac.id/id/eprint/42164

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