Hydrogen for transport

Abstract

In recent years, efforts to use environmentally friendly resources and minimizing environmental impacts throughout the life cycle of products. The important point is that greening and reducing emissions from energy industry and transport. If we focus on emissions from transport, these are mainly CO2, NOx and particulate emissions. These emissions arise mainly from the use of fossil fuels. In the transport sector, local CO2, NOx and particulate emissions can be reduced by introducing hydrogen mobility that does not produce these emissions and can be based on renewable energy sources. The con-tribution shows that the overall efficiency of the conversion of chemical energy into mechanical energy of the vehicle's wheel movement, the so-called Well to Wheel (WtW) is the highest in the case of petroleum fuels (84%). The lowest efficiency WtW is in the case of hydrogen produced from water electrolysis. When as-sessing the overall efficiency WtW (fuel and utilization) is the highest value (18–21 %) in the case of a combination of fossil fuel and the combustion engine. The lowest value of the total efficiency is for the combination of hydrogen produced by electrolysis of water and the combustion engine (3–5 %).