Method of determining volume yield of biogas during experimental research in biogas technologies

Abstract

The article deals with the issue of determining the volume of biogas produced during experimental studies during the entire cycle of anaerobic fermentation of organic matter in biogas reactors. The design of the device for determining the volume of biogas produced during the period of the complete cycle of anaerobic fermentation of organic matter in biogas reactors is proposed and given. The use of the proposed device is aimed at both small and large biogas plants, in laboratory conditions and at production facilities. Mathematical dependences are presented, which allow to calculate the volume of biogas determined by the device given in the work. The results of the study of the device using 3D modeling in the Solidworks application program in the Flow Simulation package are presented. The result of the 3D modeling is the graphical dependence of the pressure distribution in the tubes of the measuring device, namely the gas pipeline and the Pitot tube, with the subsequent establishment of the amount of biogas passed through the measuring device in a certain time interval. The work noted a high convergence of the comparative analysis of the data obtained during 3D modeling and calculated analytically. Considered in the article, the main issues of the proposed method of determining the produced volume of biogas during experimental research will allow to increase the accuracy of the research work of scientists, organizations and enterprises in the field of biogas technologies and registration of the produced volume of biogas.