Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw
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2011
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The paper presents results of experimental investigation conducted to determine permeability coefficient of a porous bed formed by biomass bales, whereby the said coefficient represents one of the most important parameters of the bed material specified when considering its combustion in the pusher-type furnaces (i.e. combustion of biomass bales in cigar burners). Correlations obtained are deemed very important for optimization of biomass bale combustion, as well as for modeling transport phenomena occurring in the porous bed formed by biomass bales during their combustion in cigar burners. In order to determine permeability coefficient of air flow through soy straw bales, appropriate experimental method was developed and suitable experimental apparatus designed and constructed. The relevant coefficients were determined in such manner as to be representative of the viscous and inertial terms of the Forchheimer equation. Experimental investigation conducted examined the effects of releva...nt biomass bale parameters i.e. porosity and the moisture content on the abovementioned Forchheimer coefficients. Measurements conducted, as well as analysis of the results obtained, defined functional dependencies of the permeability coefficients on the porosity (which was varied in the range 0.62-0.78, for moisture content of 0.0948) and the sample's moisture content (which was varied in the range 0.0948-0.6394, for the selected value of porosity of 0.68) to be established. The correlations obtained are deemed suitable to be used in a broad spectrum of operating conditions that usually occur during real operation. Results obtained indicate that reduction in biomass bed porosity results in reduced permeability, with Forchheimer coefficients exhibiting a hyperbolic dependence on the bed porosity. Since it has been observed that increased moisture content of the sample (porosity value of 0.68) caused a decrease in permeability, a functional dependence of the sample moisture content on the porosity has been established. The dependence established is valid for the range of the sample moisture content between 0.0948 and 0.6394. Permeability coefficients, as well as their dependencies on the relevant factors (porosity and moisture content), represent basic data used in mathematical modeling of biomass bale combustion in cigar burners. In addition, the ones may also be very important when considering modifications of furnaces utilizing the combustion principle mentioned.
Ključne reči:
Soya residue / Permeability / Forchheimer equation / CombustionIzvor:
International Journal of Heat and Mass Transfer, 2011, 54, 19-20, 4300-4306Izdavač:
- Pergamon-Elsevier Science Ltd, Oxford
Finansiranje / projekti:
- Unapređenje industrijskog postrojenja sa fluidizovanim slojem u okviru razvoja tehnologije za energetski efikasno i ekološki opravdano sagorevanje različitih otpadnih materija u fluidizacionom ložištu (RS-MESTD-Technological Development (TD or TR)-33042)
- Razvoj i unapređenje tehnologija za energetski efikasno korišćenje više formi poljoprivredne i šumske biomase na ekološki prihvatljiv način, uz mogućnost kogeneracije (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42011)
- Geohemijska ispitivanja sedimentnih stena - fosilna goriva i zagađivači životne sredine (RS-MESTD-Basic Research (BR or ON)-176006)
DOI: 10.1016/j.ijheatmasstransfer.2011.05.015
ISSN: 0017-9310
WoS: 000293108300015
Scopus: 2-s2.0-79959751714
Kolekcije
Institucija/grupa
Mašinski fakultetTY - JOUR AU - Erić, Aleksandar AU - Dakić, Dragoljub AU - Nemoda, Stevan AU - Komatina, Mirko AU - Repić, Branislav PY - 2011 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1231 AB - The paper presents results of experimental investigation conducted to determine permeability coefficient of a porous bed formed by biomass bales, whereby the said coefficient represents one of the most important parameters of the bed material specified when considering its combustion in the pusher-type furnaces (i.e. combustion of biomass bales in cigar burners). Correlations obtained are deemed very important for optimization of biomass bale combustion, as well as for modeling transport phenomena occurring in the porous bed formed by biomass bales during their combustion in cigar burners. In order to determine permeability coefficient of air flow through soy straw bales, appropriate experimental method was developed and suitable experimental apparatus designed and constructed. The relevant coefficients were determined in such manner as to be representative of the viscous and inertial terms of the Forchheimer equation. Experimental investigation conducted examined the effects of relevant biomass bale parameters i.e. porosity and the moisture content on the abovementioned Forchheimer coefficients. Measurements conducted, as well as analysis of the results obtained, defined functional dependencies of the permeability coefficients on the porosity (which was varied in the range 0.62-0.78, for moisture content of 0.0948) and the sample's moisture content (which was varied in the range 0.0948-0.6394, for the selected value of porosity of 0.68) to be established. The correlations obtained are deemed suitable to be used in a broad spectrum of operating conditions that usually occur during real operation. Results obtained indicate that reduction in biomass bed porosity results in reduced permeability, with Forchheimer coefficients exhibiting a hyperbolic dependence on the bed porosity. Since it has been observed that increased moisture content of the sample (porosity value of 0.68) caused a decrease in permeability, a functional dependence of the sample moisture content on the porosity has been established. The dependence established is valid for the range of the sample moisture content between 0.0948 and 0.6394. Permeability coefficients, as well as their dependencies on the relevant factors (porosity and moisture content), represent basic data used in mathematical modeling of biomass bale combustion in cigar burners. In addition, the ones may also be very important when considering modifications of furnaces utilizing the combustion principle mentioned. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - International Journal of Heat and Mass Transfer T1 - Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw EP - 4306 IS - 19-20 SP - 4300 VL - 54 DO - 10.1016/j.ijheatmasstransfer.2011.05.015 ER -
@article{ author = "Erić, Aleksandar and Dakić, Dragoljub and Nemoda, Stevan and Komatina, Mirko and Repić, Branislav", year = "2011", abstract = "The paper presents results of experimental investigation conducted to determine permeability coefficient of a porous bed formed by biomass bales, whereby the said coefficient represents one of the most important parameters of the bed material specified when considering its combustion in the pusher-type furnaces (i.e. combustion of biomass bales in cigar burners). Correlations obtained are deemed very important for optimization of biomass bale combustion, as well as for modeling transport phenomena occurring in the porous bed formed by biomass bales during their combustion in cigar burners. In order to determine permeability coefficient of air flow through soy straw bales, appropriate experimental method was developed and suitable experimental apparatus designed and constructed. The relevant coefficients were determined in such manner as to be representative of the viscous and inertial terms of the Forchheimer equation. Experimental investigation conducted examined the effects of relevant biomass bale parameters i.e. porosity and the moisture content on the abovementioned Forchheimer coefficients. Measurements conducted, as well as analysis of the results obtained, defined functional dependencies of the permeability coefficients on the porosity (which was varied in the range 0.62-0.78, for moisture content of 0.0948) and the sample's moisture content (which was varied in the range 0.0948-0.6394, for the selected value of porosity of 0.68) to be established. The correlations obtained are deemed suitable to be used in a broad spectrum of operating conditions that usually occur during real operation. Results obtained indicate that reduction in biomass bed porosity results in reduced permeability, with Forchheimer coefficients exhibiting a hyperbolic dependence on the bed porosity. Since it has been observed that increased moisture content of the sample (porosity value of 0.68) caused a decrease in permeability, a functional dependence of the sample moisture content on the porosity has been established. The dependence established is valid for the range of the sample moisture content between 0.0948 and 0.6394. Permeability coefficients, as well as their dependencies on the relevant factors (porosity and moisture content), represent basic data used in mathematical modeling of biomass bale combustion in cigar burners. In addition, the ones may also be very important when considering modifications of furnaces utilizing the combustion principle mentioned.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "International Journal of Heat and Mass Transfer", title = "Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw", pages = "4306-4300", number = "19-20", volume = "54", doi = "10.1016/j.ijheatmasstransfer.2011.05.015" }
Erić, A., Dakić, D., Nemoda, S., Komatina, M.,& Repić, B.. (2011). Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw. in International Journal of Heat and Mass Transfer Pergamon-Elsevier Science Ltd, Oxford., 54(19-20), 4300-4306. https://doi.org/10.1016/j.ijheatmasstransfer.2011.05.015
Erić A, Dakić D, Nemoda S, Komatina M, Repić B. Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw. in International Journal of Heat and Mass Transfer. 2011;54(19-20):4300-4306. doi:10.1016/j.ijheatmasstransfer.2011.05.015 .
Erić, Aleksandar, Dakić, Dragoljub, Nemoda, Stevan, Komatina, Mirko, Repić, Branislav, "Experimental method for determining Forchheimer equation coefficients related to flow of air through the bales of soy straw" in International Journal of Heat and Mass Transfer, 54, no. 19-20 (2011):4300-4306, https://doi.org/10.1016/j.ijheatmasstransfer.2011.05.015 . .