Zhechao Qu
YOU?
Author Swipe
View article: Experimental and kinetic modeling study on refrigerants: A comparative case study on methane and difluoromethane
Experimental and kinetic modeling study on refrigerants: A comparative case study on methane and difluoromethane Open
View article: Measurement of carbon monoxide pressure broadening and temperature dependence coefficients in the 1 ← 0 band
Measurement of carbon monoxide pressure broadening and temperature dependence coefficients in the 1 ← 0 band Open
Measure broadening coefficients of CO lines P(16), P(20), P(26) and P(27) in Ar, He, H 2 , O 2 , N 2 , CO 2 , Air, and P(20)'s temperature dependence coefficients in Ar, He, N 2 , CO 2 , significantly improving CO mole fraction accuracy.
View article: Nh3 Absorption Spectroscopic Parameters Measurement and Impurities Determination in Emerging Applications: Ccus-Co2, Biomethane and H2
Nh3 Absorption Spectroscopic Parameters Measurement and Impurities Determination in Emerging Applications: Ccus-Co2, Biomethane and H2 Open
View article: Traceable ammonia quantification and metrological uncertainty evaluation in a shock tube
Traceable ammonia quantification and metrological uncertainty evaluation in a shock tube Open
This work emphasizes on the development of an ultra-rapid spectrally resolved tunable diode laser absorption spectroscopy (TDLAS)-based spectrometer with a scan frequency of 40 kHz for dynamic NH3 quantification in a shock tube.Thanks to t…
View article: Investigations on Pressure Broadening Coefficients of NO Lines in the 1←0 Band for N2, CO2, Ar, H2, O2 and He
Investigations on Pressure Broadening Coefficients of NO Lines in the 1←0 Band for N2, CO2, Ar, H2, O2 and He Open
A tunable diode laser absorption spectroscopy (TDLAS)-based spectrometer employing a mid-infrared (Mid-IR) interband cascade laser (ICL) was developed and used to determine pressure broadening coefficients of two NO absorption transitions …
View article: Potassium Release from Biomass Particles during Combustion—Real-Time In Situ TDLAS Detection and Numerical Simulation
Potassium Release from Biomass Particles during Combustion—Real-Time In Situ TDLAS Detection and Numerical Simulation Open
Potassium (K) is one of the main and most hazardous trace species released to the gas-phase during thermochemical conversion of biomass. Accurate experimental data and models of K release are needed to better understand the chemistry invol…
View article: Towards an Optical Gas Standard for Traceable Calibration-Free and Direct NO2 Concentration Measurements
Towards an Optical Gas Standard for Traceable Calibration-Free and Direct NO2 Concentration Measurements Open
We report a direct tunable diode laser absorption spectroscopy (dTDLAS) instrument developed for NO2 concentration measurements without chemical pre-conversion, operated as an Optical Gas Standard (OGS). An OGS is a dTDLAS instrument that …
View article: Measurements of N2, CO2, Ar, O2 and Air Pressure Broadening Coefficients of the HCl P(5) Line in the 1–0 Band Using an Interband Cascade Laser
Measurements of N2, CO2, Ar, O2 and Air Pressure Broadening Coefficients of the HCl P(5) Line in the 1–0 Band Using an Interband Cascade Laser Open
We determine the CO2, N2, Ar, O2 and air pressure broadening coefficients of the H35Cl P(5) absorption line at 2775.77 cm−1 in the fundamental (1←0) band using a newly developed direct tunable diode laser absorption spectroscopy (dTDLAS)-b…
View article: Accurate analysis of HCl in biomethane using laser absorption spectroscopy and ion-exchange chromatography
Accurate analysis of HCl in biomethane using laser absorption spectroscopy and ion-exchange chromatography Open
Biomethane is a renewable energy gas with great potential to contribute to the diversification and greening of the natural gas supply.
View article: Towards a dTDLAS-Based Spectrometer for Absolute HCl Measurements in Combustion Flue Gases and a Better Evaluation of Thermal Boundary Layer Effects
Towards a dTDLAS-Based Spectrometer for Absolute HCl Measurements in Combustion Flue Gases and a Better Evaluation of Thermal Boundary Layer Effects Open
This work presents a mid-IR direct tunable diode laser absorption spectroscopy (dTDLAS)-based HCl spectrometer, which is specially designed and optimized to measure HCl concentration in combustion exhaust gas matrices (i.e. elevated gas te…
View article: Diode laser spectrometer for NO2 quantification: Absolute laser spectroscopic and direct NO2 concentration measurements for atmospheric monitoring within the EMPIR project MetNO2
Diode laser spectrometer for NO2 quantification: Absolute laser spectroscopic and direct NO2 concentration measurements for atmospheric monitoring within the EMPIR project MetNO2 Open
<p>Nitrogen dioxide (NO<sub>2</sub>) is an atmospheric pollutant that needs to be accurately measured for air quality control. The standard reference method (SRM, as laid down in EN 14211:2012 [1]) for NO<sub&…
View article: Tunable Diode Laser Absorption Spectroscopy Diagnostics of Potassium, Carbon Monoxide, and Soot in Oxygen-Enriched Biomass Combustion Close to Stoichiometry
Tunable Diode Laser Absorption Spectroscopy Diagnostics of Potassium, Carbon Monoxide, and Soot in Oxygen-Enriched Biomass Combustion Close to Stoichiometry Open
Combustion facilities run on pulverized biomass often exhibit fluctuations in fuel feeding and, thus, equivalence ratio and would benefit from fast process control based on optical λ sensors installed in the reactor core. The conversion of…
View article: Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry
Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry Open
View article: Effect of Volatile Reactions on the Thermochemical Conversion of Biomass Particles
Effect of Volatile Reactions on the Thermochemical Conversion of Biomass Particles Open
View article: Real-time in situ multi-parameter TDLAS sensing in the reactor core of an entrained-flow biomass gasifier
Real-time in situ multi-parameter TDLAS sensing in the reactor core of an entrained-flow biomass gasifier Open
View article: Tunable Diode Laser Atomic Absorption Spectroscopy for Detection of Potassium under Optically Thick Conditions
Tunable Diode Laser Atomic Absorption Spectroscopy for Detection of Potassium under Optically Thick Conditions Open
Potassium (K) is an important element related to ash and fine-particle formation in biomass combustion processes. In situ measurements of gaseous atomic potassium, K(g), using robust optical absorption techniques can provide valuable insig…
View article: Calibration-free scanned wavelength modulation spectroscopy – application to H_2O and temperature sensing in flames
Calibration-free scanned wavelength modulation spectroscopy – application to H_2O and temperature sensing in flames Open
A calibration-free scanned wavelength modulation spectroscopy scheme requiring minimal laser characterization is presented. Species concentration and temperature are retrieved simultaneously from a single fit to a group of 2f/1f-WMS linesh…
View article: In situ H2O and temperature detection close to burning biomass pellets using calibration-free wavelength modulation spectroscopy
In situ H2O and temperature detection close to burning biomass pellets using calibration-free wavelength modulation spectroscopy Open