Mathematical model of heat transfer in the reactor of a biogas plant

Abstract

Abstract The use of technical means for the production of biomethane, as a source of alternative energy, is mainly characterized by design and technological parameters, as well as operating modes of biogas plants. This study was carried out in order to obtain data on the main parameters of a biogas plant and the effect of a heat exchanger-mixer on performance indicators. The convenience of performing mathematical modeling is that it is expensive to carry out experiments on real objects, just as conducting experiments on a real installation is associated with high material costs, as well as high time costs, due to the high inertia of heat exchange processes, and the significant overall dimensions of the biogas plant. The results of mathematical modeling of thermal processes occurring in a biogas plant are presented. The data on the influence of the main parameters of the biogas plant and the heat exchanger-mixer on the quality indicators of its operation were obtained. It is shown that the theoretical temperature homogeneity of the mixed medium is achieved by combining the heat exchanger and the mixing device into one unit, the design and technological parameters characterizing the intensity of the forced movement of the fermented mass, with a change in thermal conductivity.