Browsing by Author "Zalamea, Silvana"

Now showing 1 - 2 of 2

Determinación del potencial de generación eléctrica a partir de biomasa en el Ecuador
(Universidad de Cuenca, 2017) Serrano, José; Mejía, William; Ortiz, Juvenal; Sánchez, Andrea; Zalamea, Silvana
Energy consumption worldwide has increased over the years to meet the needs of a society whose population is increasing. Ecuador is not exempt from this reality; its economy is largely dependent on fossil fuels. However, it is possible to lessen this dependence by considering the biomass from agricultural residues of crop production, among which, banana, rice, sugar cane and cocoa stand out as a potential sources of energy. In the present article, the potential of effective electric power generation of the residues coming from the mentioned crops was evaluated using a methodology that considers the estimation of the real availability of biomass, its low heating values and the overall yield of equivalent plant of technologies of Biomass energy conversion such as direct combustion DC, gasification coupled with gas turbine TGG, gasification with combined cycle CCG, and pyrolysis with combined cycle CCP. The results show that banana, with the largest amount of waste produced per year, has the greatest potential for electricity generation: 119.5 GWh through DC, 150,3 GWh through TGG, 201,2 GWh through CCG and 186.2 GWh by CCP.
Modelado cinético y matemático de la reacción de gasificación catalítica de la glucosa en agua en condiciones supercríticas para la producción de hidrógeno
(Universidad de Cuenca, 2016-04) Zalamea, Silvana; Mejía, William; Serrano, José
Hydrogen produced from banana biomass waste is considered as a highly efficient biofuel. One of the cleanest methods for its obtention is the catalytic supercritical water gasification, wherein the constituent polysaccharides of biomass (cellulose, hemicellulose and lignin) convert into high value gaseous products. It is important the design of a chemical reactor for this process due to the necessity of achieving the hydrogen production in a reliable way. Among the elements that determine the reactor design, in this article were studied the intrinsic kinetic and material balance. First, a kinetic study of the reaction was performed using the glucose as model compound owing to it is the most important structural component of the cellulose. It was revealed several intermediate reactions that influenced on the yield for hydrogen. Later, it was performed a differential species balance for the glucose. It was solved in Fortran 95 applying the Thomas numerical algorithm. The results showed that at lower mass fractions of glucose, the higher levels of conversion.