Characterization of temperature non-uniformity over a premixed CH4–air flame based on line-of-sight TDLAS

Zhang, Guangle; Liu, Jianguo; Xu, Zhenyu; He, Yabai; Kan, Ruifeng

doi:10.1007/s00340-015-6289-4

Cited by 35 publications

(15 citation statements)

References 33 publications

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“…Then, an inverse Fourier transform is performed for the transformation from frequency domain to time domain. The 2f signal in each saw wave period can be obtained by the summation of a continuous second-order harmonic wave component in the time domain as shown in (8). The amplitude of the 2f signal, which is expressed as Amp S 2 t , can be obtained from the peak-to-peak value as shown in (9).…”

Section: Systemmentioning

confidence: 99%

“…Among the numerous gas sensing techniques, optical methods have been studied worldwide in recent years due to its advantages including high sensitivity, fast response time, nonintrusive nature, wide sensing range, and long lifespan [5][6][7]. Tunable diode laser absorption spectroscopy (TDLAS) using lasers as light sources is a powerful and widely used technique for gas sensing applications including environmental monitoring, industrial process control, chemical analysis, and combustion diagnostics [8][9][10][11][12]. In order to achieve highly gas sensing ability, wavelength modulation spectroscopy technique is widely adopted to achieve high signal-to-noise ratio (SNR).…”

Section: Introductionmentioning

confidence: 99%

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Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Zhang

Chi

2018

Journal of Spectroscopy

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A wavelength modulation spectroscopy-(WMS-) based gas sensing system was established to measure concentration of carbon monoxide (CO) in the range 0-100%. The CO absorption line at 1563.06 nm was scanned with a tunable distributed feedback (DFB) laser, and two InGaAs photodiodes were applied to perform optic-electric conversion. Without using commercial instruments, essential electrical circuits were self-developed and integrated, including laser temperature controller, laser current driver, signal generator, and digital lock-in amplifier. The gas cell deployed in the system was fiber coupled with a total effective optical path length of 50 cm. The second-order harmonic signal was extracted, and experiments of gas detection were carried out to investigate the performance of the sensor, including detection repeatability, detection accuracy, response time, and limit of detection (LoD). Experiment results show that the sensor is reliable and has acceptable probing performance. The maximum relative detection error is less than 3.8%, suggesting good detection stability. Benefiting from the self-developed sensor, the whole CO detection system has small size, affordable expense, and application potential.

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Section: Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Zhang

Chi

2018

Journal of Spectroscopy

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“…Zhou Xin described a two-line absorption temperature sensing based on two H 2 O lines with a single laser near 1.8 μm [14]. Nevertheless, quite a few researchers desire to measure the nonuniformity flow fields using one optical beam with multiple absorption lines which is called line-of-sight tunable diode laser absorption spectroscopy (LOS-TDLAS) [15,16]. The LOS-TDLAS technique only inverts one-dimensional temperature distribution, so it cannot be well applied to the distribution of combustion field.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Temperature Distribution Based on Optical Fiber-Sensing Technology and Tunable Diode Laser Absorption Spectroscopy

Sun¹,

Sun²,

Tang³

et al. 2018

Temperature Sensing

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Temperature is an important physical quantity in most industrial processes. Distributed temperature sensor (DTS), fiber Bragg grating (FBG), and tunable diode laser absorption spectroscopy (TDLAS) are three primary techniques for temperature measurement using fiber optic sensing and spectrum technology. The DTS system can monitor space temperature field along the fiber in real time. In addition, it also can locate a fire source using two sections of optical fibers which are placed orthogonally to each other. The FBG temperature sensor is used to measure the point temperature. The temperature sensitivity of the bare FBG is 10.68 pm/ C and the linearity is 0.99954 in the range of 30-100 C. Based on tunable diode laser absorption spectroscopy (TDLAS), two-dimensional (2D) distribution reconstructions of gas temperature are realized using an algebraic reconstruction technique (ART). The results are in agreement with the simulation results, and the time resolution is less than 1 s.

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“…For instance, Sanders developed a sensor for oxygen gas temperature distributions [11]. Liu and Zhang studied the temperature and water vapor distributions [12,13]. The multi-spectral LOS-TDLAS technique can retrieve one-dimensional temperature and species distribution, but it is still limited in the application of practical combustion conditions.…”

Section: Introductionmentioning

confidence: 99%

A Study of Two Dimensional Tomography Reconstruction of Temperature and Gas Concentration in a Combustion Field Using TDLAS

Sun

Zhang

et al. 2017

Applied Sciences

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Based on tunable diode laser absorption spectroscopy (TDLAS), two-dimensional (2D) distribution reconstructions of gas concentration and temperature are realized using an algebraic reconstruction technique (ART). The influence of the beam distribution and grid size on combustion field reconstruction is investigated to attain optimal reconstruction results with a limited number of beams. Under limited optical-path numbers, it shows that a better spatial resolution is attainable only when the laser beam paths are vertical and parallel to the symmetry axis of the combustion field. Furthermore, experiments with 16 beam paths using one and two flat flame combustion fields are carried out in different fuel-air equivalence ratios under room temperature. The results are in agreement with the simulation results, and the time resolution is less than 1 s.

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Characterization of temperature non-uniformity over a premixed CH4–air flame based on line-of-sight TDLAS

Cited by 35 publications

References 33 publications

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser

Measurement of Temperature Distribution Based on Optical Fiber-Sensing Technology and Tunable Diode Laser Absorption Spectroscopy

A Study of Two Dimensional Tomography Reconstruction of Temperature and Gas Concentration in a Combustion Field Using TDLAS

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