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Savremena poljoprivredna tehnika
2010, vol. 36, iss. 1, pp. 21-31
article language: Serbian
document type: Original Scientific Paper
published on: 11/05/2010
Thermal power of biomass boiler and review of mathematical models
aUniversity of Novi Sad, Faculty of Agriculture
bNovi Sad

e-mail: dedovicn@uns.ac.rs

Project

Projekat Ministarstva nauke Republike Srbije, br. NP EE 273021: Unapređenje materijalno-energetskog bilansa i razvoj preduslova za primenu ekološki korektnih energetskih sistema zasnovanih na sopstvenim energetskim resursima(biomasi) u PK 'Mitrosrem'

Abstract

The paper reviews test results for a biomass-fired hot water boiler, located at 'Mitrosrem' agricultural company from Sremska Mitrovica, work unit Kuzmin. Nominal boiler power is 120 KW. The impact of the quantity of inlet air (150, 220, 290, 360 and 430 m3/h) fed to the boiler firebox was continuously monitored. Correlation between boiler thermal power and bale incineration time, as well as the mass decrease during bale combustion were examined, resulting in presented corresponding mathematical models. Two types of recirculation (no recirculation and variable recirculation) have been chosen. In the case of combustion with no recirculation, average boiler thermal power rate ranges between 63.47 to 90.90 kW for wheat straw (between 75.66 to 113.12 kW for soybean straw). In the case of variable recirculation, average boiler thermal power rate ranges between 39.54 to 97.32 kW for wheat straw (between 80.42 to 113.08 kW for soybean straw). Maximum boiler thermal power is 130.94 kW (in the case of no recirculation), and 134.63 kW (in the case of variable recirculation) for wheat straw. Maximum boiler thermal power is 141.56 kW (in the case of no recirculation), and 134.05 kW (in the case of variable recirculation) for soybean straw. Increase of air throughput in the firebox increases the thermal capacity of the boiler, while the bale combustion time is reduced. Total combustion time ranges between 587 to 1,175 s (600 to 1,585 s, with variable recirculation of combustion products) for wheat straw. Total combustion time ranges between 400 to 1,258 s (447 to 723 s, with variable recirculation of combustion products) for soybean straw. Boiler thermal power is greater if soybean straw bales are used as a fuel. Bale combustion time is prolonged when using variable recirculation as compared to no recirculation. Application of variable recirculation is more suitable when soybean straw is used as a fuel.

Keywords

References

Alimpić, M. (1983) Energija iz poljoprivrede. Savremena poljoprivredna tehnika, Novi Sad, vol. 9, br. 1-2, str. 1-8
Bates, D.M., Watts, D.G. (1988) Nonlinear regression analysis and its applications. New York: John Wilwy & Sons
Brkić, L., Živanović, T. (2006) Termički proračun parnih kotlova. Beograd: Mašinski fakultet
Brkić, M., Janić, T. (1998) Mogućnosti korišćenja biomase u poljoprivredi. in: Briketiranje i peletiranje biomase iz poljoprivrede i šumarstva, zbornik radova, Novi Sad: Izvršno veće Autonomne Pokrajine Vojvodine, str. 5-10
Bubenheim, D.L., Patterson, M., Wignarajah, K., Flynn, M. (1997) Incineration of biomass and utilization of product gas as a CO2 source for crop production in closed systems. Gas quality and phytotoxicity. Advanced in Space Research, 20(10), str. 1799-2054
Dedović, N., Igić, S., Janić, T. (2008) Modelovanje energetskog bilansa poljoprivredne proizvodnje na poljoprivrednom kombinatu PD 'Mitrosrem'. Revija agronomska saznanja, Novi Sad, 13(5): 10-14
Dedović, N., Igić, S., Janić, T., Brkić, M. (2008) Uticaj recirkulacije vazduha na energetsku efikasnost kotla za sagorevanje balirane biomase 120 kW i prikaz matematičkih modela. Savremena poljoprivredna tehnika, vol. 34, br. 3-4, str. 221-227
Dedović, N., Igić, S., Janić, T. (2009) Energetska efikasnost kotla za sagorevanje biomase pri recirkulaciji produkata sagorevanja i prikaz matematičkih modela. Savremena poljoprivredna tehnika, vol. 35, br. 1-2, str. 42-51
Hellwig, M. (1985) Basic of the combustion of wood and straw. in: Palz W., Coombs J., Hall D.O. [ed.] 'Energy from Biomass', (3rd) E.C. Conference on Biomass, Venice, 25-29. 03., Proceedings, str. 793-798
Hertmann, H., Thuneke, K., Holdrich, A., Robmann, P. (2003) Handbuch Bioenergie-Kleinanlagen. Gulzow, Nemačka: Fachagentur Nachwachsende Rohstoffe
Igić, S. (2008) Uticaj vrste i stanja balirane slame te količine i sastava ulaznog vazduha na efikasnost kotlovskog postrojenja. Novi Sad: Poljoprivredni fakultet, PhD thesis
Igić, S., Pekez, Z., Brkić, M., Janić, T. (2006) Određivanje toplotne moći, sadržaja vlage i pepela pšenične i sojine slame. Revija agronomska saznanja, Novi Sad, 15(5): 38-43
Janić, T., Brkić, M., Erdeljan, Z. (1998) Sagorevanje balirane biomase. Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP, 2(3): 117-121
Janić, T., Brkić, M., Igić, S., Dedović, N. (2008) Termoenergetski sistemi sa biomasom kao gorivom. Savremena poljoprivredna tehnika, vol. 34, br. 3-4, str. 213-220
Janić, T., Brkić, M., Igić, S., Dedović, N. (2009) Gazdovanje energijom u poljoprivrednim preduzećima i gazdinstvima. Savremena poljoprivredna tehnika, vol. 35, br. 1-2, str. 127-133
Jones, J.M., Pourkashanian, M., Williams, A., Hainsworth, D. (2000) A comprehensive biomass combustion model. Renewable Energy, 19(1-2): 229-344
Krejić, N., Herceg, Đ. (1994) Matematika i Mathematica. Novi Sad: Prirodno-matematički fakultet, Institut za matematiku
Oka, S.N., Jovanović, L.L. (1997) Biomasa u energetici. in: Oka Simeon i Jovanović Lj. [ed.] Biomasa, obnovljivi izvori energije, Beograd: Jugoslovensko društvo termičara
Ostojić, M., Simin, R., Igić, S. (2003) Upotreba biomase za proizvodnju toplotne energije na farmi. Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP, vol. 7, br. 5, str. 121-123
Pantelić, I. (1984) Primena statističkih metoda u istraživanjima i procesima proizvodnje. Novi Sad: Fakultet tehničkih nauka, OOUR Naučno-obrazovni institut za proizvodno mašinstvo
Pešenjanski, I. (2000) Kinetika sagorevanja pšenične slame. Novi Sad: Poljoprivredni fakultet, MSc rad
Pešenjanski, I., Stepanov, B. (2005) Rezultati ispitivanja kotla za sagorevanje biomase 250 kw i predlog tehničko-organizacionih mera za povećanje energetske efikasnosti postojećih kotlovskih postrojenja. Savremena poljoprivredna tehnika, vol. 31, br. 4, str. 197-203
Strasser, H. (1985) Mathematical theory of statistics. Berlin - New York: De Gruyter
Surla, K. (1992) Numeričke i statističke metode u obradi eksperimentalnih podataka. Novi Sad: Institut za matematiku
Šefčič, Đ. (1991) Istraživanje kriterijuma za ocenjivanje efektivnosti postupaka valorizacije slame. Novi Sad: Fakultet tehničkih nauka, PhD thesis
Wayne, C., Turner, J. (1997) Energy management handbook. Lilburn: Fairmont Press
Wolfram, S. (1991) Mathematica a system for doing mathematics by computer. Redwood City: Addison-Wesley
Zhaosheng, Y., Xiaoqian, M., Yanfen, L. (2009) Mathematical modeling of combustion in a grate-fired boiler burning straw and effect of operating conditions under air and oxygen-enriched atmospheres. Renewable energy, article in press
Zhou, H., Jensen, A.D., Glarborg, P., Jensen, P.A., Kavaliauskas, A. (2005) Numerical modeling of straw combustion in a fixed bed. Fuel, 84(4): 389