An auto-sustainable solid oxide fuel cell system fueled by bio-ethanolProcess simulation and heat exchanger network synthesis

Energy and exergy analysis of an ethanol fueled solid oxide fuel cell power plant

“…After that, the liquid mixture is vaporized and preheated on devices HEX-1 and HEX-2 prior to the Reactor inlet. The endothermic steam reforming of the ethanol ( ∆H = +173.5 kJ/mol) is studied considering a packed bed reactor charged with a Ni/Al hydrotalcite catalyst [15][16] and among the various reaction patterns reported previously [14,[16][17] the Lagmuir-Hishelwood kinetic model reported in Arteaga et al [6,14] is used to describe a six step reaction scheme including the coke deposition on catalyst surface The mixture leaving the Reactor is then fed into a solid oxide fuel cell module where an air flux (21%O 2 , 79%N 2 ) is used as oxidant which is previously compressed and heated in a Compressor, HEX-3 and HEX-4. The SOFC model is used to study the process and to design various scenarios considering variations of the reformer operational parameters.…”

Energy and exergy analysis of a sugar cane bagasse gasifier integrated to a solid oxide fuel cell based on a quasi-equilibrium approach

“…The oxygen consumed in the electrochemical reaction was separated from the air using a (Separator) block and the inlet flow of air was calculated for an oxygen stoichiometry coefficient of 2. Considering the results reported in previous works [10,11], the fuel utilization coefficient defined by (Eq. (10)) was fixed at 75%.…”

“…Among the various types of fuel cells, the SOFCs are the most attractive due to their high efficiency in energy conversion, modularity, environmental compatibility, support internal reforming and water gas reactions at relatively high concentrations of CH 4 and CO, no need of noble materials as electrodes and operates at high temperatures (873-1273 K) [6,[9][10][11][12].…”

Balanço de planta para microgerador PaCOS alimentado com etanol

“…Características importantes do sistema serão a estrutura híbri-da, com baterias que satisfazem as oscilações da carga elétrica sem requerer variações da potência produzida pela pilha [4], e a utilização direta do etanol sem processamento químico externo, que torna a estrutura do sistema mais simples [5]. Na bibliografia existente foram identificados vários modelos teóricos de sistemas de geração elétrica com PaCOS alimentadas com etanol [6][7][8][9][10][11] e estudos experimentais de pilhas a combustí-vel unitárias com características adequadas à operação com etanol anidro [12][13][14][15] ou hidratado [16][17][18][19]. Pelo outro lado, não foram identificados trabalhos focados em resultados experimentais da operação de empilhamentos comerciais ou laboratoriais com etanol como combustível (tanto puro quanto misturado com água).…”