CFD analysis and design optimization of an air manifold for a biomass boiler

Bianco, Vincenzo; Szubel, Mateusz; Matras, Beata; Filipowicz, M.; Papis-Frączek, Karolina; Podlasek, Szymon

doi:10.1016/j.renene.2020.10.107

Cited by 15 publications

(7 citation statements)

References 27 publications

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“…Pada manifold udara boiler, penggunaan CFD digunakan untuk optimasi boiler berbahan bakar biomassa. Variabel kunci optimasi yang digunakan adalah entropi dan penurunan tekanan yang terjadi [13]. Optimasi pada pemanasan area menggunakan boiler dilakukan optimasi menggunakan optimasi multi objek.…”

Section: Gambar 2 Skema Proses Korosi Pada Tube Boilerunclassified

Optimasi Umur Pakai dan Efektivitas Boiler Akibat Korosi Menggunakan Algoritma Particle Swarm

Setiawan¹,

Fahriani²,

Riyadi³

2021

JSE

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One of the causes of boiler pipe breakage is corrosion. The prediction of the lifetime of the tube and superheater effectiveness on the boiler shall be calculated to determine and predict the failure time. The prediction of the lifetime of the tube is a prediction of the time of the failure of the superheater tube in the boiler so that the return can be performed. The effectiveness of the superheater in the boiler is a comparison of the heat transfer rate of the overheated tubes inside the boiler. The research method was research and development, a computational program using an optimization process. The variables used in the study were steam input temperature, metal tube temperature, steam outlet temperature, natural gas input temperature, natural gas mass flow rate, vapour mass flow rate, and natural gas outlet temperature. This study takes a case study of the superheater boiler from the company. The results of calculation of the life expectancy of the operating conditions shall be 11 years when the boiler data sheet is used and 14 years for using the actual boiler data. Superheater effectiveness in boilers with 56% is a data sheet on boilers and 56% of the actual data. Optimization of the particle swarm algorithm predicted a 29 year lifespan. The effectiveness of the superheater in the boiler is 86%.

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Section: Gambar 2 Skema Proses Korosi Pada Tube Boilerunclassified

Optimasi Umur Pakai dan Efektivitas Boiler Akibat Korosi Menggunakan Algoritma Particle Swarm

Setiawan¹,

Fahriani²,

Riyadi³

2021

JSE

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“…There currently exist numerous applications of air-staged air distribution combustion technology for coal and biomass in large-scale combustion devices. − However, the majority of studies focus on fuel combustion characteristics, with typical equipment including tube furnaces, muffle furnaces, thermogravimetric analyzers, etc. Large differences between the operating conditions of the test equipment and the actual combustion device result in discrepancies between the data and conclusions and the actual fuel combustion in large furnaces.…”

Section: Introductionmentioning

confidence: 99%

Reduced Pollutant Emissions and Slagging Rate of Biomass Pellet Combustion by Optimizing the Multilayer Distribution of Secondary Air

Liu

Wang

et al. 2022

ACS Omega

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The utilization of coal and other fossil fuels is becoming increasingly restricted. Biomass, as a clean and renewable energy, plays a significant role in achieving zero carbon emissions. However, biomass is prone to slagging in the combustion process due to its high alkali metal content. The ash slagging rate and pollutant emission level of flue gas can be reduced by optimizing the air distribution, in order to decrease the fuel layer temperature in the combustion chamber. The results reveal opposite change trends of CO and NO x concentrations in the flue gas. The NO x emissions of corn stalk combustion under the multilayer secondary air distribution are obvious compared with those of rice husk combustion. The slagging rate of corn stalks is highly correlated with temperature T 1 of the fuel bed. The silica ratio ( G ), alkali/acid ratio ( B / A ), Na content index (Na (index)), and alkaline index (Al c ) cannot accurately predict the slagging tendency when temperature T 1 changes. Therefore, the modified predictive index ( G t ) was proposed to predict the slagging tendency of corn stalks with the combustion zone temperature T 1 effectively. The experimental results can contribute to the efficient combustion and low pollutant emissions of biomass.

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“…The optimization of a biomass boiler by an air manifold was investigated by Bianco et al The authors found out that reducing the entropy meant improving the device performances [7]. The research of Smith et al was focused on the optimization of biomass combustion by burner designs [8].…”

Section: Introductionmentioning

confidence: 99%

“…In the cases of combustion simulation, realizable k−ε models are used, where k is the turbulence kinetic energy and ε is the dissipation rate of the turbulence kinetic energy. This approach was also chosen by Bianco et al, where it was stated that the advantage of the realizable k−ε model is the modified dissipation rate equation and damping function [7]. A realizable k-ε model was also used by Silva et al in their research of industrial furnaces.…”

Section: Introductionmentioning

confidence: 99%

Dependence of the Flue Gas Flow on the Setting of the Separation Baffle in the Flue Gas Tract

et al. 2021

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With the combustion of solid fuels, emissions such as particulate matter are also formed, which have a negative impact on human health. Reducing their amount in the air can be achieved by optimizing the combustion process as well as the flue gas flow. This article aims to optimize the flue gas tract using separation baffles. This design can make it possible to capture particulate matter by using three baffles and prevent it from escaping into the air in the flue gas. The geometric parameters of the first baffle were changed twice more. The dependence of the flue gas flow on the baffles was first observed by computational fluid dynamics (CFD) simulations and subsequently verified by the particle imaging velocimetry (PIV) method. Based on the CFD results, the most effective is setting 1 with the same boundary conditions as those during experimental PIV measurements. Setting 2 can capture 1.8% less particles and setting 3 can capture 0.6% less particles than setting 1. Based on the stoichiometric calculations, it would be possible to capture up to 62.3% of the particles in setting 1. The velocities comparison obtained from CFD and PIV confirmed the supposed character of the turbulent flow with vortexes appearing in the flue gas tract, despite some inaccuracies.

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CFD analysis and design optimization of an air manifold for a biomass boiler

Cited by 15 publications

References 27 publications

Optimasi Umur Pakai dan Efektivitas Boiler Akibat Korosi Menggunakan Algoritma Particle Swarm

Optimasi Umur Pakai dan Efektivitas Boiler Akibat Korosi Menggunakan Algoritma Particle Swarm

Reduced Pollutant Emissions and Slagging Rate of Biomass Pellet Combustion by Optimizing the Multilayer Distribution of Secondary Air

Dependence of the Flue Gas Flow on the Setting of the Separation Baffle in the Flue Gas Tract

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