A Mathematical Model of Heat and Mass Exchange in Biogas Producing in a Digester
N. V. Kolosova, S. I. Monakh
Donbas National Academy of Civil Engineering and Architecture
Annotation: The article discusses issues of heat and mass transfer in the digester in the production of biogas by fermenting biomass. Thermal power for heating the fermented biomass depends on various factors, one of which is the presence of deposits of the solid fraction of the substrate on the heating element of the digester. Also, the mechanism of heat transfer from the coil to the fermentation mass is affected by the bubbling of the released gas from the mass itself. The article describes the processes of heat transfer from the heating element to the fermented mass in the absence of bubbling and taking it into account. The developed mathematical model of heat and mass exchange makes it possible to determine effect of the thickness of the deposits on the coil on intensity of heat emission from the heating coil to the fermented mass with and without bubbling.
Keywords: a digester, temperature regime, heat and mass exchange, heat transfer intensity, heat-emission, bubble.
Pages: 67-74.
Link for citation: Kolosova, N. V.; Monakh, S. I. A Mathematical Model of Heat and Mass Exchange in Biogas Producing in a Digester. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2019. – Vol. 15, N 2. – Р. 67-74. – URL: https://donnasa.ru/publish_house/journals/spgs/2019-2/02_kolosova_monakh.pdf (date of access: 16.09.2024). (in Russian)
Vol. 15, N 2 (2019)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture