Application of the Two-Color Spectrometric Method for Biomass and Fossil Fuel Combustion Diagnostics

Olivares R.L.M.; Aldana D.M.; Sullon A.H.; Paulini J.L.U.; Orbegozo E.M.; Cabredo J.O.; Gallo L.E.S.; Martinez L.V. · TEMSCON LATAM 2025 - Technology and Engineering Management Society Conference (2025) · DOI: 10.1109/temsconlatam65810.2025.11238576

Resumen

This study examines the characterization of flame temperatures generated by the combustion of propane gas and biomass, specifically sugarcane bagasse, using an optimized two-color spectrometric method. A tubular combustion chamber prototype was developed to facilitate controlled combustion experiments, with spectral data collected across ultraviolet, visible, and near-infrared ranges. The two-color method was refined by systematically varying the wavelength difference, identifying 100 nm as the optimal value for accurate temperature estimation. The results indicate that the flame temperature of propane gas is approximately 1900 K, consistent with its controlled combustion properties. In contrast, the flame temperature of sugarcane bagasse was determined to be around 1750 K, with variations attributed to the inherent instability and heterogeneity of biomass combustion. The spectral analysis also revealed emission peaks at 590 nm and 770 nm, corresponding to sodium and potassium emissions, respectively, which influence temperature calculations. This research demonstrates the applicability of non-invasive spectrometric techniques for combustion diagnostics and provides insights into the thermal behavior of biomass and fossil fuels. The findings contribute to advancements in energy optimization and environmental monitoring by enabling precise characterization of combustion processes.

Instituciones: Universidad Nacional de Trujillo; Universidad de Piura