International Scientific Journal


Biomass is one of the renewable energy sources to produce power with zero carbon dioxide emission, biomass gasification process considered as a sustainable technology for energy conversion. This paper deals with rice husk air gasification simulation using non- stoichiometric equilibrium model based on Gibbs free energy minimisation. FACTSAGE 6.3 software used to calculate gas composition at temperature range 600-1000°C and equivalence ratio (Ф) range 0.15 - 0.55. Maximum gas mixture exergy of 9551.7 kJ per kg of rice husk is obtained at Ф=0.25 and 725°C. Chemical exergy contributes 89.90 - 94.85% of total gas mixture exergy, cold gas efficiency and exergetic efficiency varies in the range of 25.19 - 70.71% and 23.11 - 62.24% respectively in operating condition. Rice husk gasification process analysed by evaluating, sustainability index (SI) and environmental destruction factor (Ced).
PAPER REVISED: 2018-01-14
PAPER ACCEPTED: 2018-01-30
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THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 2, PAGES [549 - 560]
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