Conventional and advanced exergy and exergoeconomic analysis of a biomass gasification based SOFC/GT cogeneration system

In this paper, a small scale biomass gasification based solid oxide fuel cell/gas turbine (SOFC/GT) combined heat and power (CHP) plant is investigated by means of both conventional advanced exergy exergoeconomic analysis. A one-dimensional model an internal reforming planner SOFC employed to account for the temperature gradient within cell structure, which maintained at maximum allowable (150 K) under different operating conditions. Two main parameters process, namely, air-to-steam ratio modified equivalence ratio, are investigated, key cycle study analyzed. Moreover, multi-objective optimization procedure applied determine unavoidable gasifier conditions required analysis system. The results reveal that highest rate destruction occurs in gasifier, followed afterburner (AB) with 41.87% 21.98%, respectively. Also, lowest factor related AB 5.34%, recovery steam generator (HRSG), air compressor, SOFC, implies priority improve these components reduce cost rate. obtained from indicate most total unavoidably CHP plant. shows least improvement potential terms reduction almost 2% avoidable part, Heat Exchanger 3 (H.X.3), duo their parts 5%, 10% 13%f Furthermore, part investment all cogeneration larger than it difficult system components. Meanwhile, endogenous/exogenous completely endogenous integrated plant, except HRSG, GT, HX1. Compressors turbines have destruction. This due higher Reducing seems difficult, as was found be Finally, some approach opposite those method. fact emphasizes alone insufficient unreliable. For example, on perspective, gas H.X.2 8.9% 8.46% factor, respectively, should considered reducing rate, while method gives results.