An assessment of the operating efficiency of a condensing boiler fed by fuel with different amounts of hydrogen in the mixture

The current trends converge towards minimizing the carbon footprint on the environment in the operation of all thermal equipment and need finding alternative solutions compared to what the market offers at the moment.Utilizing hydrogen in combustible mixtures with methane gas to fuel condensing boilers is one solution.The benefit is that it reduces carbon dioxide emissions into the atmosphere as only water vapor is produced when hydrogen undergoes combustion.The effects of adding hydrogen at percentages of 23%, 30%, 35% and 45%, respectively, to the combustible gas mixture are examined in the paper.