Analysis of Gas Turbine Combustor Exhaust Emissions:Effects of Transient Inlet Air Pressure

FERNANDO ZENAIDO SIERRA ESPINOSA JUAN CARLOS GARCIA CASTREJON JOSE ALFREDO RODRIGUEZ RAMIREZ (2024)

Gas turbine combustors are often subjected to combustion instabilities because

of variability of operating conditions, affecting components, and altering exhaust

emissions. Herein, the analysis focuses on simulating numerically the non-premixed

combustion as unsteady flamelet combustion and detailed kinetic

mechanism. The goal is analyzing exhaust gases under unsteady inlet airflow

conditions to define operation guidelines. The numerical approach is validated

using data from the literature for nonperturbed cases. Three periodical perturbations

of different amplitude show differences with the nonperturbed case.

Besides emission of exhaust gases, the temperature field is sensitive to airflow

inlet conditions. According to the simulation results, a strong dependence of

temperature and pressure in primary and dilution zones of combustor exists on

the inlet air pressure condition. Emissions of flue gases like CO and NOx respond

to combustor thermal behavior showing high sensitivity to inlet air pressure as

well. Results indicate that moderate pressure oscillations may derive into

flashback effects.

Artículo

INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS

Implementation of a Nickel-Electroless Coating in Heat Exchanger Pipes Considering the Problem of the Environmental Conditions ofthe Cooling Water Without Recirculation to Increase the Effectiveness Under Uncertainty

VICTOR MANUEL ZEZATTI FLORES GUSTAVO URQUIZA BELTRAN MIGUEL ANGEL BASURTO PENSADO LAURA LILIA CASTRO GOMEZ JUAN CARLOS GARCIA CASTREJON (2022)

This research is based on the operation tube heat exchangers, their use and problematic on hydroelectric power plants. It is based on the design heat exchanger tubes for industrial use, which took the parameters of operation, design, working fluids (air and water) and conditions to assemble a monitoring equipment at appropriate scale for the laboratory, with the necessary measurement instruments to analyze the behavior of heat energy transfer by means of thermocouples, the velocity of the air with a hot wire anemometer and the flow of water with a turbine flow meter, in pipes of different materials: copper, steel 1018 and stainless steel 316L, all in ideal conditions, and with this to found a comparative parameter with pipes of the same materials but under conditions of deterioration with the presence of forced oxidation and with the data mining and support vector machine can be minimized the corrosion problems in pipes.

Artículo

INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS Data mining, Support Vector Machine, Pattern Recognition and Decision Support System, Heat exchangers