Numerical Simulation of a Flameless Combustion Furnace with Mixtures of Methane and a Sub-Bituminous Pulverized Coal

A numerical study of flameless combustion with mixtures of methane and a sub-bituminous pulverized coal was carried out. The analyzed mixtures were 0%, 25%, 50%, 75%, and 100% pulverized coal (energy based). The numerical study was performed using the geometry of a laboratory-scale furnace, which was originally designed to obtain the flameless combustion regime burning natural gas.

Study of transient heating using an in situ combustion system

In this work, we evaluated the transient heating of a liquid using an in situ laboratory-scale combustion system, and the sensible and latent heat transfer efficiencies were determined through experimental evaluation of the heating of water volume and psychrometric parameters of combustion gases. Tests were performed using natural gas with a composition of 97% (by volume) of methane, and the liquid level was varied to study the effects on efficiency. Experimentation was carried out at atmospheric conditions of 298 K and 850 mbar with combustion gases at 446°C and equivalence ratio φ=0.83.

Prediction and measurement of the critical compression ratio and methane number for blends of biogas with methane, propane and hydrogen

Methane number (MN) and the critical compression ratio (CCR) measurements for twelve blends of biogas with methane or propane and hydrogen additions were taken in a Cooperative Fuel Research (CFR) F2 model engine according to the standard. In addition, CHEMKIN simulations of MN and the CCR were performed on these blends at similar conditions to the CFR F2 engine operation. Eight chemical kinetics mechanisms were used; it was concluded that the best mechanism to simulate the CCR is USCII, and the best mechanism to simulate MN is San Diego.

Direct emissions of nitrous oxide from combustion of gaseous fuels

International Journal of Hydrogen Energy

After molecular nitrogen, nitrous oxide (N2O) is the second most abundant nitrogen compound in the atmosphere and its concentration is rising at rate of 0.26% yr−1 (0.7 ppb yr−1). In the troposphere N2O is a relatively stable compound, however it is reactive in the stratosphere, where it is destroyed by photolysis with ultraviolet radiation. While photolysis in the stratosphere removes this potent greenhouse gas from the atmosphere, subsequent reactions also destroy protective ozone.

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

En el marco de Momentos Académicos Francisco Javier Cadavid Sierra el grupo GASURE hace una invitación a la presentación divulgativa de la tesis maestria ''Estudio teórico, numérico y experimental de la intercambiabilidad del gas naturel en Antioquia'', realizada por el Ingeniero Edwin Uribe del Instituto Técnológico Metropolitano (ITM), cuyos tutores fueron 

Seminario sobre técnicas de medición, diagnóstico y manejo de patentes

Momentos Académicos Francisco Cadavid Sierra, es un espacio en memoria y honor al profesor Francisco Cadavid Sierra(q.e.p.d), en el cual se realiza las presentación de tópicos académicos de la agenda de investigación del grupo y de sus interacciones con otras disciplinas, se presentan los seminarios y avances de las tesis (pregrado y postgrado), los avances y resultados de los proyectos de investigación y la realización de curso de actualización de corta duración.

Processing Criteria and Experimental Data Quality for a High Compression Ratio Spark Ignition Engine

This article presents the evaluation of some of these methodologies applied to a high compression ratio-spark ignition engine, which was achieved through modification of a commercial Diesel engine. The accuracy on calculation of equivalence ratio from exhaust gas analysis and the start of combustion from mass fraction burned has been tested. The effect of trapped mass on the in-cylinder energy balance was determined.