Determination of biogas fuel compression ratio for agricultural machinery fueling

BACKGROUND: Agricultural machinery is the main consumer of liquid petroleum-product fuel in the countryside of Republic of Sakha (Yakutia). Even partial machinery transition to biogas fuel would reduce consumption of liquid petroleum-product fuel, in this regard, first of all, it is necessary to determine biogas fuel compression ratio for agricultural machinery fueling. A number of experimental works is demanded to carry out to determine compression ratio of biogas fuel of different compositions. AIMS: Determination of compression ratio of biogas fuel of different composition for agricultural machinery fueling with a compressor. METHODS: Experimental determination of biogas fuel compression ratio carried out with the UGK-3 test facility. Based on obtained experimental data, numerical simulation was carried out with CurveExpert and MS Excel software (for data set linear approximation). RESULTS: Based on Mendeleev-Clapeyron ideal gas law, the formula for theoretical calculation of compression ratio of biogas fuel of different chemical compositions. In order to obtain experimental data, a number of experimental works was carried out with the UGK-3 test facility, updated for considering of biogas fuel compression ratio in various conditions. According to the results of linear approximation, with increasing of methane volume fraction, biogas fuel compression ratio tends to values of pure methane compression ratio taken from GOST 30319.2-2019. CONCLUSIONS: Practical utility of the study lies in ability of using the proposed method of calculation of compression ratio during vehicle fueling with biogas fuel for the sake of safe and effective fueling.