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First and Second Law Investigation of a Biomass Integrated Gasification Triple Power Cycle
This paper presents the findings of a thermodynamic investigation into the operation of a biomass driven syngas fuelled cogeneration cycle for combined production of power and cooling. A thermodynamic analysis through energy and exergy is employed, and a comprehensive parametric study is performed to investigate the effects of change in biomass material, gas turbine inlet temperature, steam turbine inlet pressure and cooling to power ration for ejector on performance of the topping integrated gasification combined cycle and bottoming organic Rankine cycle with an ejector. Further a performance comparison of combined power and cooling plant is made with the triple power cycle (without ejector) to quantify the performance variation due to an ejector employment. The results obtained from the analysis show that employment of an ejector has an increase in the first law efficiency and second law efficiency compared to the triple power cycle. It is further shown that energy and exergy efficiencies of the cogeneration cycle significantly vary with the change in gas turbine inlet temperature and steam turbine inlet pressure but the change in biomass material shows small variation in these parameters.
Keywords
Biomass, Triple Power Cycle, Ejector Refrigeration, First Law, Second Law.
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