Energy and economic effects of CHP with combined technologies of corn cobs gasification and gas turbines

Abstract

This paper presents the performance and economic analysis of the gas turbine with co-firing gas from corn cob gasification and natural gas. Adiabatic and non-adiabatic expansion in the turbine is considered. The analysis is performed parametrically with corn cob gasification gas and natural gas ratio. The volumetric energy content of fuels with different share of gas from the corn cob gasification therefore, with different calorific values, is compared by means of the Wobbe Index. In energy and economic analyses, the following configurations are dealt with: single manifold, dual manifold and separate gas systems. [Projekat Ministarstva nauke Republike Srbije, br. 33049: The Development of CHP Demonstration Plant with Biomass Gasification]

Fuel quality impact analysis for practical implementation of corn COB gasification gas in conventional gas turbine power plants

“…Mass flow rates changes of combustion products through the gas turbine results in 'off-design' operation, and hence variation of the turbine polytropic efficiency. Therefore, the second adjustment of the base model was the introduction of the variable polytropic gas turbine efficiency, as a function of the 100 combustion products mass flow rate, consistent with the gas turbine plant reference data, equation (7). Equation (7) shows acceptable accuracy for the reference gas turbine [19] using the From previous studies, opinion is divided concerning the introduction of fuel enthalpy in the combustion chamber energy balance.…”

“…Therefore, the second adjustment of the base model was the introduction of the variable polytropic gas turbine efficiency, as a function of the 100 combustion products mass flow rate, consistent with the gas turbine plant reference data, equation (7). Equation (7) shows acceptable accuracy for the reference gas turbine [19] using the From previous studies, opinion is divided concerning the introduction of fuel enthalpy in the combustion chamber energy balance. For instance, the referenced mathematical method [18] does not consider fuel enthalpy, while other authors [20] consider fuel enthalpy as an important part of the combustion chamber energy balance.…”

Humidified ammonia/hydrogen RQL combustion in a trigeneration gas turbine cycle

“…On the other hand, CHP and CCHP systems can combine gas turbines with heat recovery steam generators (HRSG) [35]. CHP systems with both gas turbines and HRSG can obtain efficiencies about 82% [47], whilst CCHP systems based on gas turbines and utilization of waste heat for heat energy production and cooling can reach efficiency outputs of up to ~82-85% [48]. Further studies have explored the idea of using a CCHP configurations that includes two shafts double Brayton cycle (Brayton and reversed Brayton cycle) with the combustion of natural gas and recirculation of carbon dioxide.…”

Comparative Analysis of Gasification and Adiabatic Digestion of Corn for Practical Implementation in Conventional Gas Turbines

“…Currently, biomass power cycles are showing high potential when implemented in gas turbine power plants [2][3][4]. Even though their significant potentials, combustors designs for these biogases have to overcome irregularities of combusting biogas blends with lower heating value (which is about 30% of that of natural gas) [5], combustion instabilities and corrosion effects.…”