Development of fuel composition measurement technology using laser diagnostics

Kamimoto, Takahiro; Deguchi, Yoshihiro; Shisawa, Yuki; Kitauchi, Y.; Eto, Yoshizumi

doi:10.1016/j.applthermaleng.2016.03.075

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…Compared with the current spectroscopic techniques such as Fourier transform infrared (FTIR) [1] and non-dispersive infrared (NDIR) spectroscopy [2], tunable diode laser absorption spectroscopy (TDLAS) with high sensitivity and short response time [3] offers significant advantages for in situ CO 2 measurements in the hot, humid, and dusty environments of power plants. With the rapid advancements in semiconductor laser industry, TDLAS has been widely applied in different fields such as combustion diagnostics [4][5][6][7][8], isotopic analysis [9][10][11][12][13], and atmospheric gas detection [14][15][16][17][18]. Because of their exquisite constituents and compact packaging, as well as low cost, tunable semiconductor diode lasers are nearly the ideal source for highly-sensitive and highly-spectral-resolved measurements in industrial fields [19].…”

Section: Introductionmentioning

confidence: 99%

TDLAS Monitoring of Carbon Dioxide with Temperature Compensation in Power Plant Exhausts

et al. 2019

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Featured Application: Applying to complex industrial environment, TDLAS monitoring with temperature compensation can come handy.Abstract: Temperature variations of flue gas have an effect on carbon dioxide (CO 2 ) emissions monitoring. This paper demonstrates accurate CO 2 concentration measurement using tunable diode laser absorption spectroscopy (TDLAS) with temperature compensation methods. A distributed feedback diode laser at 1579 nm was chosen as the laser source for CO 2 measurements. A modeled flue gas was made referring to CO 2 concentrations of 10-20% and temperatures of 298-338 K in the exhaust of a power plant. Two temperature compensation methods based on direct absorption (DA) and wavelength modulation (WMS) are presented to improve the accuracy of the concentration measurement. The relative standard deviations of DA and WMS measurements of concentration were reduced from 0.84% and 0.35% to 0.42% and 0.31%, respectively. Our experimental results have validated the rationality of temperature compensations and can be further applied for high-precision measurement of gas concentrations in industrial emission monitoring.

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Section: Introductionmentioning

confidence: 99%

TDLAS Monitoring of Carbon Dioxide with Temperature Compensation in Power Plant Exhausts

et al. 2019

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“…Nowadays, DAS is still widely used in many fields because of its irreplaceable advantages of easy implementation, free of calibration and high temporal resolution (49,(67)(68)(69)(70). When a well collimated laser at central frequency v [cm ¡1 ] enters a gas sample with a total path length of L [cm], a proportion of light is absorbed and the wavelength-dependent transmission coefficient t v is described as…”

Section: Direct Absorption Spectroscopy (Das)mentioning

confidence: 99%

Laser absorption spectroscopy for combustion diagnosis in reactive flows: A review

Liu

2018

Applied Spectroscopy Reviews

168

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Laser absorption spectroscopy (LAS) has been rapidly developed and widely applied to combustion diagnosis in recent decades. As a costeffective tool for measuring multiple combustion parameters, LAS provides unique properties in terms of accuracy and sensitivity for understanding the reactions and kinetics in reactive flows. Line-ofsight and tomographic LAS techniques have stimulated numerous applications and been proved to be robust for in situ combustion diagnosis in uniform and non-uniform combustion fields, respectively. This review highlights the breakthroughs in the evolution of LAS techniques from the viewpoints of key principles, sensors and instrumentations developed for combustion diagnosis, with particular emphasis on a series of spatially-resolved LAS techniques with their recent applications on obtaining high-fidelity measurement results with minimal intrusion to the practical combustors. Along the way, we note some challenges and requirements for further development of the LAS-based combustion diagnosis.

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