Effect of Different Configurations on Small Pellet Combustion Systems

Moran, J.; Tabarés, José Luis Míguez; Granada, Enrique; Porteiro, Jacobo; González, Luis Español

doi:10.1080/009083190910505

Cited by 11 publications

(12 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flame generated is not completely developed and is interrupted by the water tubes stopping the reactions and contributing to enhance CO emissions; this effect is more pronounced for colder tubes. The maximum temperature reached varies from approximately 1,500 to 1,600 °C, which are typical values for this type of combustion system, as demonstrated in previous works [15,16]. While some tubes are touched by the flame, others are shielded and are reached by cooled gases.…”

Section: Experimental Contrastsupporting

confidence: 72%

“…The values for the different measurements have instantaneous variations due to the irregular entry of particles into the bed [15,16].…”

Section: Fuel and Experimental Installationmentioning

confidence: 99%

“…These reactions consisted of the partial oxidation of benzene [Equation (16)] and methane [Equation (17)] to carbon monoxide. The complete oxidation of hydrogen [Equation (18)] and carbon monoxide [Equation (19)] and the dissociation of carbon dioxide [Equation (20)], which becomes important at high temperatures, complete the homogeneous reactions.…”

Section: Combustion Modelmentioning

confidence: 99%

“…Before comparing the CFD results with the measured data, the difficulties of maintaining a constant air-to-fuel ratio (air excess) throughout the tests and measuring gas species in such a combustion system must be understood, especially when considering the commonly high instability of low-power systems [16]. Table 4 presents a comparison between the results of a CFD simulation using the proposed model and the averaged values of the measurements performed after several hours of working continuously.…”

Section: Experimental Contrastmentioning

confidence: 99%

See 3 more Smart Citations

Simulation of the Effect of Water Temperature on Domestic Biomass Boiler Performance

et al. 2012

View full text Add to dashboard Cite

This paper presents a methodology to simulate the combustion of fixed beds of biomass particles using computational fluid dynamics (CFD) techniques. The models presented were used in the simulation of a domestic pellet boiler working under operating conditions and the model predictions were compared with measurements of heat transfer, temperature and species concentration. The same procedure was then used to simulate the same domestic boiler working with different values of water temperature and the influence of water temperature variations on the main variables was analyzed.Keywords: simulation; CFD; combustion; biomass; boiler Mass fraction of species generated in the bed [-] Void fraction [-] CO to CO 2 ratio [-] Air excess ratio [-] Dynamic viscosity [kg mStoichiometric coefficient of the pellet consumption [-] Mass fraction in volatile gas [-] Sphericity [-] ′′′

show abstract

Section: Experimental Contrastsupporting

confidence: 72%

“…The values for the different measurements have instantaneous variations due to the irregular entry of particles into the bed [15,16].…”

Section: Fuel and Experimental Installationmentioning

confidence: 99%

Section: Combustion Modelmentioning

confidence: 99%

Section: Experimental Contrastmentioning

confidence: 99%

See 2 more Smart Citations

Simulation of the Effect of Water Temperature on Domestic Biomass Boiler Performance

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The subject of low power heating boilers is also taken into account in scientific research. Researchers from the University of Vigo [4] experimentally analyzed a 24 kW fixed bed stove until work in different configurations. They analyzed in detail the efficiency of the heating boiler as a function of combustion parameters such as the mass flow of fuel, stoichiometric ratio and the secondary air fraction.…”

Section: Introductionmentioning

confidence: 99%

Identification of character of flow realized in low power heating boilers

2019

View full text Add to dashboard Cite

An analysis of a heat transfer process during exhaust gas flow through two boiler draughts connected in the reversing chamber is presented. The article shows the main differences in the exhaustgas flowthrough the boiler construction when heating boiler works with different levels of heating power.The aim of the proposed research is defining a character of a flow and a heat transfer process depending onthe horizontal and vertical position of boiler draughts.

show abstract