Examinando por Materia "TEMPERATURA"
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Tesis de maestría Experimental investigation of the combustion properties of CO2 diluted CO-O2 mixtures with variation of initial temperature and pressure(2022-03-15) Torres de Ritter, Eugenio Luis; Veser, Anke; Kuznetsov, MikhailWith the increasing relevance of energy transition, synthetic fuels have arisen as an alternative to storage green energy. In the processing of this fuels, carbon monoxide is widely used. Understanding the behaviour of the combustion of this gas is of high importance. To date, very limited knowledge is available on how combustion of carbon monoxide behaves alone or diluted with carbon dioxide as much focus were given towards mixtures that included hydrogen and water. The focus of this work is to investigate the combustion of carbon monoxide in dry ambient and characterize the flame speed of the combustion through two different methods, the Shadowgraph Method and the Constant Volume Bomb Method. For this purpose, combustion experiments in an explosion bomb were conducted. An experimental matrix of nine different initial pressures-temperature combinations and five different mixtures of CO-O2-CO2 were tested.Tesis de maestría Setup and calibration of a combustion flame temperature measurement system using two-dimensional multicolor pyrometry(2019-07) Schweickhardt, León"To further optimize the combustion process, a precise knowledge of multiple in-cylinder parameters is necessary. This thesis investigates the calibration and setup of a temperature measurement system by means of two-dimensional multicolor pyrometry. A high-speed camera is used in conjunction with an endoscope to capture the temperature radiation of soot during combustion. The measurement system is calibrated with a tungsten lamp and tested for possible interfering factors. Custom MATLAB scripts were written to analyze the raw image data and calculate temperature and KL values for each pixel. Finally, test bench results are presented and different analysis strategies are discussed."