Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM

Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM

Bibliographic Details
Main Author: Das, Apurba K.
Language:English
Published: Case Western Reserve University School of Graduate Studies / OhioLINK 2012
Subjects:
Mechanical Engineering
syngas
HHC
hydrogen
water
RCM
flame speed
autoignition
spectroscopy
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=case1333125819
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-case13331258192021-08-03T05:34:26Z Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM Das, Apurba K. Mechanical Engineering syngas HHC hydrogen water RCM flame speed autoignition spectroscopy The title study investigates the combustion characteristics of moist H2/oxidizer and moist H2/CO/oxidizer mixtures. It involves experimental determination of laminar flame speeds with emphasis on the effect of moisture addition (0–35% in fuel mixture) using a counterflow burner apparatus. Autoignition delays of H2/oxidizer mixtures at high pressure (10, 30 and 70 bar) and intermediate temperature (907–1048K) are also experimentally determined using a new Rapid Compression Machine (RCM). The H2/oxidizer mixture is further studied with 0–40% molar concentration of moisture in the mixtures to determine the effect of water addition on ignition delay at various post compression pressures. This new RCM is designed to attain higher post compression pressures (up to 140 bar) and wider compression ratios (5–25) compared to its predecessor. Experimental results provide extensive high fidelity data for H2/oxidizer and H2/CO/oxidizer mixtures with a wide range of water addition. It can be used for the refinement of the H2/CO/O2 combustion chemistry which not only is important for simulating syngas or high hydrogen content (HHC) fuel combustion but also forms the basic building block of the hydrocarbon chemistry. Additionally, a laser absorption setup meant for in-situ, real-time, non-intrusive measurement of temperature and important species in RCM is designed using a Quantum Cascade Laser (QCL) in the mid-IR region. The transition lines of water near 7.6 μm are used for the temperature and species measurements. A calibration test cell similar in dimension to the RCM reaction chamber is used to determine the line strengths and line broadening parameters in different bath gases required for the RCM study. The method of temperature and species concentration measurements in RCM is developed and demonstrated for non-reactive as well as reactive mixtures. Detailed discussions on uncertainty analysis for the temperature and species concentration measurements are also presented. 2012-05-22 English text Case Western Reserve University School of Graduate Studies / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=case1333125819 http://rave.ohiolink.edu/etdc/view?acc_num=case1333125819 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Mechanical Engineering
syngas
HHC
hydrogen
water
RCM
flame speed
autoignition
spectroscopy
spellingShingle Mechanical Engineering
syngas
HHC
hydrogen
water
RCM
flame speed
autoignition
spectroscopy
Das, Apurba K.
Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
author Das, Apurba K.
author_facet Das, Apurba K.
author_sort Das, Apurba K.
title Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
title_short Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
title_full Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
title_fullStr Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
title_full_unstemmed Combustion Characteristics of Moist H2 and H2/CO Mixtures and In-situ Temperature and Species Measurements Using Mid-IR Absorption Spectroscopy in a New RCM
title_sort combustion characteristics of moist h2 and h2/co mixtures and in-situ temperature and species measurements using mid-ir absorption spectroscopy in a new rcm
publisher Case Western Reserve University School of Graduate Studies / OhioLINK
publishDate 2012
url http://rave.ohiolink.edu/etdc/view?acc_num=case1333125819
work_keys_str_mv AT dasapurbak combustioncharacteristicsofmoisth2andh2comixturesandinsitutemperatureandspeciesmeasurementsusingmidirabsorptionspectroscopyinanewrcm
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