Co-firing of mixtures agricultural biogas with LNG or LPG as an alternative to injection of biogas to the grid

The paper presents results of tests carried out on household appliances used for food preparation which were powered by mixtures of agricultural biogas with LNG or LPG. The main aim of the study was to check whether a mixture of this gases can be safely burned in devices designed to burn gas groups E or Lw. Prepared gas mixtures had energy parameters corresponding to the minimum parameters for second family gases groups E and Lw. The paper presents the energy parameters and gas mixtures used in the study, and the mixing ratio of biogas and LNG or LPG. Pieces of legislation that refer to the development of renewable energy sources, including increasing the use of biogas in Poland, have been presented. The obtained results show that among the draIR up blends of agricultural biogas with LNG or LPG the most promising for further research and, consequently, to use them in the future, are mixtures named B+LNG(E) and B+LPG(E). Studies have shoIR that these blends can be safely burned in household appliances used for food preparation, designed to burn group E gas without modification.