CFD modeling of a small-scale cyclonic combustor chamber using biomass powder

Lima, Rodrigo Cavalcanti Ribeiro; Nogueira, Manoel; Guerra, Danielle R S

doi:10.1016/j.egypro.2017.07.208

Cited by 9 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gas phase was treated as a continuum by solving equations of mass conservation, species, momentum, and energy. The turbulence model used in the study was the k-ω, which provides a good predicting for reactive flows [36,61]. Due to the presence of solid particles in the flow, the thermal radiation effects were included, and the P1 method was used to solve the radiation model.…”

Section: Simulation Scheme and Methodsmentioning

confidence: 99%

“…A complete valuable review of studies of biomass gasification and/or devolatilization models was summarized by Di Blasi [35]. Rodrigo et al [36] presented a computational fluid dynamics (CFD) model for biomass powder in a small-scale boiler combustor. Luz et al [37] applied experimental and numerical evaluation for pyrolysis of fast powder biomass at laboratory boiler scale.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Renewable Pulverized Biomass Fuel for Internal Combustion Engines

et al. 2020

View full text Add to dashboard Cite

Biomass is currently one of the world’s major renewable energy sources. Biomass in a powder form has been recently proposed as the most encouraging of biomass contours, especially because it burns like a gas. In the current study, biomass powder was examined, for the first time, as a direct solid fuel in internal combustion engines. The aim of the current study was to investigate modeling tools for simulation of biomass powder in combustion engines (CE). The biomass powder applied was in a micro-scale size with a typical irregular shape; the powder length was in the range of 75−5800 μm, and the diameter was in the range 30−1380 μm. Different mechanisms for biomass powder drying and devolatilization/gasification were proposed, including different schemes’ and mechanisms’ rate constants. A comparison between the proposed models and experiments was carried out and results showed good matching. Nevertheless, it is important that a biomass powder simulation addresses overlapping/complicated sub-process. During biomass powder combustion, tar was shown to be formed at a rate of 57 wt.%, and, accordingly, the formation and thermal decomposition of tar were modelled in the study, with the results demonstrating that the tar was formed and then disintegrated at temperatures between 700 and 1050 K. Through biomass powder combustion, moisture, tar, and gases were released, mostly from one lateral of particles, which caused ejection of the solid particles. These new phenomena were investigated experimentally and modeled as well. Results also showed that all the proposed models, along with their rate constants, activation energies, and other models’ parameters, were capable of reproducing the mass yields of gases, tar, and char at a wide range of working temperatures. The results showed that the gasification/devolatilization model 3 is somewhat simple and economical in the simulation/computation scheme, however, models 1 and 2 are rather computationally heavy and complicated.

show abstract

Section: Simulation Scheme and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Renewable Pulverized Biomass Fuel for Internal Combustion Engines

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The volume flow rate of inlet gas supply was taken from the Ecogen technology catalogue report [8] as 48m 3 per day; which is equivalent to 0.000367 kg/s when converted. The above shown named selected boundaries were subjected to following boundary conditions [15,16] iii. Turbulence specification: Intensity=5%; Hydraulic diameter=42mm iv.…”

Section: Boundary Condition Data For Cfd Simulationmentioning

confidence: 99%

“…This modification, though not shown in fig 3, 4 and 7, has been done later to increase the heat dissipation capacity of fins. Yet another important fact can be noticed that material assigned for the module body was silicon, though usually they are made of silicon-germanium alloy [20] or Bismuth-Telluride [21] and the ceramic paste layers were ignored. Further, the position of placement of the TEG module was chosen so that the hot side of it lies at the safe zone of the temperature band formed on Aluminum envelope wall, while simultaneously covering maximum surface area to maximize the efficiency [21].…”

Section: Analysis Settings For Transient Thermal Simulationmentioning

confidence: 99%

An Investigative Methodology Through Solid Modelling and Numerical Analysis for Designing a Thermo-Electric Generator System

Chaturvedi

Mamtani

2020

Journal of Thermal Engineering

View full text Add to dashboard Cite

This product development research project proposes a simplified novel methodology to design a thermoelectric generation (TEG) system. The iterative designs of complete assembly were prepared with the aid of Solidworks and the subsequent FEM analysis was aided by ANSYS fluent and transient thermal workbenches. The combustion chamber was subjected to a computational fluid dynamic study to generate flame profiles and to establish the temperature gradient distribution along the vertical length of inner surface of cylindrical chamber. The results of CFD analysis were then transported to the transient thermal workbench to calculate the charging time of whole system, which indeed founds the issues related to starting fuel efficiency of the system. A section model of the assembly was used to conduct the transient heat transfer analysis. The final results showed that after formation of a steady temperature gradient at the inner surface, the time required to completely charge up the system to achieve steady state came to be 30 minutes, which was found to be in good agreement with the operational constraints. Also, the temperature differences obtained between the hot and cold sides of TEG MARS modules were well within the safe limits. NOx emissions were also plotted and analysed.

show abstract

“…The results of the previous draft where the stove efficiency 40.66% when compared to the kerosene stove about 40% was able to cook 1 liter of water until it reaches 100 °C in an interval of 22 minutes, while the biomass stove castel type it only takes 3 minutes to heat 1 liter of water to temperature is the 100 °C. With so the authors hope improve the efficiency of biomass fuel combustion chamber castel type [31][32].…”

Section: Introductionmentioning

confidence: 99%

Analysis of castel type biomass combustion chamber using candlenut shell fuel for patchouli oil purifying

Siahaan¹

2018

J. MECH. ENG. SCI.

View full text Add to dashboard Cite

The combustion chamber is one of the tools used to cultivate plantation, with fuel predetermined. Most people in rural areas the largest users of fossil fuels derived from kerosene, gasoline, petrol, LPG gas, coal and firewood. One agricultural wastes that can be utilized the candlenut shells capable of generating heat energy can help problems of crisis fossil fuel. Biomass fuel type castel space is one of main tools that can convert biomass into thermal energy can be harnessed to the needs of everyday people like cooking. The objective of this research is to know the energy of calor and fuel consumption that produced in combustion chamber of castel type biomass using fuel to hazelnut shell for patchouli oil distillation. This experimental method was conducted experimentally, with the main materials and equipment of combustion chamber biomass type, boiler, boiler water pipe, condenser, centrifugal blower, hazelnut shell, patchouli leaf. The working procedure is started from the combustion process inside the combustion chamber to heat the water in the boiler until distillation process to occur between dried patchouli leaves with water vapor. Then it is cooled from the coil type separator so that the vapor mixture turns phase to water mixture with patchouli oil, then the mixture is separated in the oil phase separator glass by water so that it is obtained pure patchouli oil. The results show that the combustion chamber type that is made have been in accordance with existing theoretical standards. Where the results of testing and data analysis recommend the feasibility to be applied to the patchouli oil industry. In the candlenut shell fuel of obtained heat energy of Qf = 9.356.59 k.cal/hr with a temperature of 795 °C, while the higher heating value of 18.446 kJ/kg and lower heating value at 17.170 kJ/kg. The conclusion of this research is that besides can get good distillation technology, also can utilize existing fuel around the residence and not yet utilized in this case biomass of candlenut shell which have high calorific value for burning process in the combustion chamber.

show abstract

CFD modeling of a small-scale cyclonic combustor chamber using biomass powder

Cited by 9 publications

References 9 publications

Renewable Pulverized Biomass Fuel for Internal Combustion Engines

Renewable Pulverized Biomass Fuel for Internal Combustion Engines

An Investigative Methodology Through Solid Modelling and Numerical Analysis for Designing a Thermo-Electric Generator System

Analysis of castel type biomass combustion chamber using candlenut shell fuel for patchouli oil purifying

Contact Info

Product

Resources

About