Ammonia has strong potentialities as sustainable fuel for energy applications. NH3 is carbon free and can be synthetized from renewable energy sources (RES) contributing to the increase of sustainability of the energy mix. Electricity from wind and sun can be stored through a Power to Fuel strategy by exploiting a suitable energy carrier, in this case Power to Ammonia. Ammonia can be converted back into power (Ammonia to Power) in internal combustion engine and in Solid Oxide Fuel Cells (SOFCs), globally realizing a Power to Power application. In SOFCs, the fuel reacts electrochemically avoiding the production of typical combustion pollutants such as NOx. A six cells SOFC short stack was tested with pure ammonia at a fuel utilization of 0.8 and operative temperature of 750°C. The stack achieved efficiency of 56.4 % at power of about 185 W. An innovative system without any after burner was designed and modelled based on experimental results. The model was used to calculate utilization of oxygen and gas exhaust temperature.
Operation of SOFC with pure ammonia as a fuel
G. Cinti
;L. Barelli;G. Bidini
2019
Abstract
Ammonia has strong potentialities as sustainable fuel for energy applications. NH3 is carbon free and can be synthetized from renewable energy sources (RES) contributing to the increase of sustainability of the energy mix. Electricity from wind and sun can be stored through a Power to Fuel strategy by exploiting a suitable energy carrier, in this case Power to Ammonia. Ammonia can be converted back into power (Ammonia to Power) in internal combustion engine and in Solid Oxide Fuel Cells (SOFCs), globally realizing a Power to Power application. In SOFCs, the fuel reacts electrochemically avoiding the production of typical combustion pollutants such as NOx. A six cells SOFC short stack was tested with pure ammonia at a fuel utilization of 0.8 and operative temperature of 750°C. The stack achieved efficiency of 56.4 % at power of about 185 W. An innovative system without any after burner was designed and modelled based on experimental results. The model was used to calculate utilization of oxygen and gas exhaust temperature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
