CFD analysis of the modification of the furnace of a TG-FTIR facility to improve the correspondence between the emission and detection of gaseous species

► The operating behaviour in TG coupled to FTIR is studied. ► A CFD model of the original device is simulated based on experimental data. ► An upgrade of the internal gas path is proposed and simulated. ► Improvement is installed in working device. ► Experimental and simulated results are compared.