Dynamic Analysis of Energy Consumption During Substrate Fermentation in a Biogas Reactor

The article is devoted to the issue of thermal distribution in a biogas reactor during anaerobic fermentation of biomass. The mathematical model used in this work allows us to fully investigate the dynamics of temperature change of each object, solid or rare, which participates in the heating process and determine the amount of energy required for the process of thermal stabilization of anaerobic fermentation, taking into account: initial temperatures medium, mixing frequency, substrate movement mode, anaerobic fermentation temperature regime, wind speed and physicochemical parameters of the substrate and objects involved in the thermal stabilization process, type of mixing device and power of the electric heating cable. In the article, a dynamic analysis was carried out, which made it possible for the first time to establish the required amount of energy for heating the substrate and to obtain the dependences of the temperature change of the electric heating cable and other objects involved in the process of thermal stabilization of anaerobic fermentation. Given the results presented in the article, it is possible to create energy-efficient systems automatic control mixing and heating of the substrate in biogas reactors, which will increase the profitability of the biogas plant.