Scientific production

Kinetic study of the effect of sub-atmospheric conditions on the laminar burning velocity of high C2H6 content natural gas mixtures

The laminar burning velocity (SL) was measured at sub-atmospheric pressure (0.84
atm) and an environmental temperature of 295 ± 2K for two high C2H6 content
fuel mixtures, 75% CH4 – 25% C2H6 (mixture M1), and 50% CH4 – 50% C2H6
(mixture M2), as well as the pure constituent fuels. The equivalence ratios for the
experiments ranged between 0.8 and 1.4. Numerical calculations predicting SL were
performed using 3 detailed reaction mechanisms, finding GRI-Mech 3.0 to achieve
the best agreement at the pressure conditions evaluated. The pre-exponential factor

Experimental and numerical study of the effect of water injection into the reaction zone of a flameless combustion furnace

The effect of water injection on the stability and emissions of a flameless combustion regime was evaluated. Flameless combustion operation was studied without self-regeneration, with self- regeneration, and with combustion air oxygen enrichment. For each case, increasing water flows were injected until the combustion regime was unstable. The evaluation criteria were temperature uniformity and pollutant emissions of species such as carbon monoxide and nitrogen oxide.

Analysis of potential energy savings in a rotary dryer for clay drying using data mining techniques

Clay drying is one of the most important steps in the construction materials industry. Due to its high-energy requirement, clay drying is one of the most energy-consuming processes contributing to greenhouse gas emissions, motivating the search for strategies to increase the energy efficiency of the process.

Flameless Combustion as an Alternative for Improving the Efficiency of Thermal Systems: State-of-the-Art Review

The increasing energy demand and polluting emissions have generated a growing number of studies into technologies that can be used to mitigate both problems worldwide. Among the alternatives for improving the efficiency of thermal processes, the flameless combustion regime has been presented as one of the most promising options because it enables high thermal performance by enhancing heat transfer and the combustion process, with the consequent reduction in polluting emissions.

A numerical analysis of the effect of atmospheric pressure on the performance of a heating system with a self-recuperative burner

This work evaluated the performance of a combustion chamber operating with a self-recuperative burner at various atmospheric pressures by means of Computational Fluid Dynamics (CFD) simulation. The aim was to determine the effect of atmospheric pressure on the main variables of the combustion system through mathematical correlations and numerical simulations.

Effect of the turbulence intensity on knocking tendency in a SI engine with high compression ratio using biogas and blends with natural gas, propane and hydrogen

This research presents the test results carried out in a diesel engine converted to spark ignition (SI) using gaseous fuels, applying a geometry change of the pistons combustion chamber (GCPCC) to increase the turbulence intensity during the combustion process; with similar compression ratio (CR) of the original diesel engine; the increase in turbulence intensity was planned to rise turbulent flame speed of biogas, to compensate its low laminar flame speed.

Rendimiento energético de un horno equipado con quemadores regenerativos bajo el régimen de combustión sin llama

El aumento de la eficiencia es una de las principales alternativas para reducir tanto el consumo de combustibles, como la cantidad de contaminantes. En este sentido el régimen de combustión sin llama con quemadores regenerativos se presenta como una tecnología que permite de forma simultánea alcanzar estas características. En el presente estudio se llevó a cabo la evaluación energética de forma experimental de un horno operando a 25 kW en el régimen de combustión sin llama, usando gas natural como combustible.

Estudio teórico, numérico y experimental de la intercambiabilidad del gas natural en Antioquia

Se determinaron los límites operativos de intercambiabilidad con gas natural proveniente de distintas fuentes, de tal manera que no se afecte las propiedades físicas de los equipos de combustión ya instalados y se garantice un flujo de combustible eficiente y seguro. Se estudiaron las mezclas de gas natural recibidas en Antioquia (Colombia) entre 2011-2015.