Tunable diode laser spectroscopy as a technique for combustion diagnostics

Tunable diode laser absorption spectroscopy (TDLAS) has become a proven method of rapid gas diagnostics. In the present review an overview of the state of the art of TDL-based sensors and their applications for measurements of temperature, pressure, and species concentrations of gas components in ha...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 2015-04, Vol.106, p.45-66
Main Authors: Bolshov, M.A., Kuritsyn, Yu.A., Romanovskii, Yu.V.
Format: Article
Language:English
Subjects:
Algorithms
Coal
Combustion
Combustion diagnostics
Diagnostic software
Diode lasers
Gasification
Scramjet engines
Sensors
TDLAS sensor
Temperature measurement
Tunable diode laser absorption spectroscopy
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Summary:Tunable diode laser absorption spectroscopy (TDLAS) has become a proven method of rapid gas diagnostics. In the present review an overview of the state of the art of TDL-based sensors and their applications for measurements of temperature, pressure, and species concentrations of gas components in harsh environments is given. In particular, the contemporary tunable diode laser systems, various methods of absorption detection (direct absorption measurements, wavelength modulation based phase sensitive detection), and relevant algorithms for data processing that improve accuracy and accelerate the diagnostics cycle are discussed in detail. The paper demonstrates how the recent developments of these methods and algorithms made it possible to extend the functionality of TDLAS in the tomographic imaging of combustion processes. Some prominent examples of applications of TDL-based sensors in a wide range of practical combustion aggregates, including scramjet engines and facilities, internal combustion engines, pulse detonation combustors, and coal gasifiers, are given in the final part of the review. •Overview of modern TDL-based sensors for combustion•TDL systems, methods of absorption detection and algorithms of data processing•Prominent examples of TDLAS diagnostics of the combustion facilities•Extension of the TDLAS on the tomographic imaging of combustion processes
ISSN:0584-8547
1873-3565
DOI:10.1016/j.sab.2015.01.010