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Ultima descărcare din IBN: 2024-06-11 12:23 |
Căutarea după subiecte similare conform CZU |
621.18:621.182 (2) |
Heat engines in general. Generation, distribution and use of steam. Steam engines. Boilers (29) |
SM ISO690:2012 ПОЛИЩУК, Виктор, ШВОРОВ, Сергей, ТИТОВА, Людмила, ЗУБОК, Татьяна, ЕВТУШЕНКО, Владимир, ДВОРНИК, Евгений, ВАЛИЕВ, Тимур. Моделирование процесса функционирования ферментера биогазовой установки при метановом сбраживании коровьего навоза. In: Problemele Energeticii Regionale, 2024, nr. 2(62), pp. 148-163. ISSN 1857-0070. DOI: https://doi.org/10.52254/1857-0070.2024.2-62.13 |
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Problemele Energeticii Regionale | ||||||
Numărul 2(62) / 2024 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.52254/1857-0070.2024.2-62.13 | ||||||
CZU: 621.18:621.182 | ||||||
Pag. 148-163 | ||||||
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Ensuring high and stable biogas output during digester operation is ensured by regulating and monitoring values of control parameters. The purpose of article is to develop model of process of functioning of digester during methane mono-fermentation of cow manure with establishment of values of control parameters. A solution to model was found to obtain dynamics of biogas yield, while experimental and simulated dynamics of biogas yield were as close as possible. The developed model is system of differential equations that describe changes in concentrations of substrate nutrients SN , methanogen biomass b M and dynamics of biogas output in digester B . The system of differential equations was solved in Simulink package b M f t , obtaining dependencies t f N s and t f B . The dependence t f B was compared with results of studies conducted on laboratory biogas plant with digester with useful volume of 30 liters at temperature of 37°C with periodic substrate loading system. By selecting parameters of model, resulting function t f B was compared with similar one obtained experimentally. It has been established that in model of digester functioning process during methane mono-fermentation of cow manure, following coefficients have following meaning: bacterial growth rate 038. 0 K m3/(kg day); substrate assimilation 3. 0 k ; bacterial growth rate 0.0045 v b m3/(kg day); rate of conversion of nutrients into biogas 0.00085 conv m6/kg. The obtained values of coefficients make it possible to carry out modeling of process of methane mono-digestion of cow manure and predict biogas yield at different initial values of concentration of methanogen biomass, concentration of substrate nutrients, digester volume, which is used in industrial biogas plants. |
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Cuvinte-cheie Biogas, biogas plant, methane thank, mathematical model, modeling, substrate, Nutrients, methanogens, biogaz, instalație de biogaz, fermentator, model matematic, modelare, substrat, Nutrienţi, metanogene, биогаз, биогазовая установка, ферментер, математическая модель, моделирование, субстрат, питательные вещества, метаногены |
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