Haolin Yang

Haolin Yang
Chinese Academy of Sciences | CAS · Guangzhou Institute of Energy Conversion

Doctor of Philosophy

About

46
Publications
3,379
Reads
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359
Citations
Citations since 2016
22 Research Items
287 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction
Skills and Expertise

Publications

Publications (46)
Article
Wall coating modification has been a potential solution to organize the combustion process in space-constrained system. For this purpose, CeO2 doping effects on the flame stability of premixed methane/air mixtures confined within an adjustable-gap narrow channel with coating ZrO2-based ceramics are experimentally investigated. A series of character...
Article
From the perspective of the thermal/chemical performance management of a slot burner, three kinds of blended coatings with the low thermal conductivity and certain chemical activities, including 30wt.%Y2O3/ZrO2, 30wt.%MgO/ZrO2 and 30wt.%Al2O3/ZrO2, were prepared on stainless steel walls plated by atmospheric plasma spraying. The effects of coating...
Article
In order to develop a burner with uniform temperature field, the combustion characteristics and thermal performance of partially premixed methane/air jet flames were experimentally studied by using micro jet array burners. The circular tubes of 1.0-mm inner diameter and 1.5-mm outer diameter were used as nozzles. The effects of nozzle spacing and e...
Article
The oxygen-deficient combustion characteristics of methane in a localized stratified vortex-tube combustor (LSVC) are studied by diluting combustion air with nitrogen. The influences of oxygen mole fraction (0.13 ~ 0.21) on flame configuration, combustion stability, combustion efficiency, and NOx emission characteristics are experimental investigat...
Article
The chemical catalytic performance of functional ceramics materials of rare earth is of great technological and scientific significance to actively regulate the flame-wall interaction in high-temperature combustion. The premixed methane-air flames in a slot burner with different wall materials were characterized by OH-PLIF technique to gain an insi...
Article
A novel vortex-tube combustor with axial fuel injection for NOx reduction was proposed to overcome the instability of ultra-lean combustion. The stability limit, flame configuration, NOx and CO emissions, and flame structure were investigated experimentally under various global equivalence ratios and fuel flow rates. The mechanisms of NOx emission...
Article
Full-text available
To solve problems of the low burn-off rate and the flame instability in a conventional rapidly mixed tubular flame (RMTF) burner and problems of the flashback and the narrow extinction limits in a premixed tubular flame burner, a new fuel/air mixing mode with multi-staged inlets was proposed and applied to a tubular flame burner, called the multi-s...
Article
Full-text available
The stabilization performance and mechanisms in a diffusion‐like vortex‐tube combustor is investigated for oxygen‐enriched combustion. The stability limit, flame configuration, and pressure fluctuation are investigated under various conditions. Results show that a diffusion‐like flame structure is established in the combustor and the nonpremixed pe...
Article
The stabilization performance and mechanisms in a diffusion-like vortex-tube combustor is investigated for oxygen-enriched combustion. The stability limit, flame configuration, and pressure fluctuation are investigated under various conditions. Results show that a diffusion-like flame structure is established in the combustor and the non-premixed p...
Article
The operating limit and pressure fluctuations of a localized stratified vortex-tube combustor (LSVC) are investigated experimentally by taking methane as fuel at the inlet temperature of 300 K and the combustor pressure of 1 atm over a range of equivalence ratios (0.1-1.0). The combustion modes are distinguished according to the properties of press...
Article
The combustion characteristics in a localized stratified tubular flame burner (LSTFB) were experimentally studied under lean conditions. The stability limit and pressure fluctuation were obtained under various global equivalence ratios and fuel flow rates. The mechanisms driving the combustion instability were analyzed with the combination of numer...
Article
Full-text available
A new skeletal mechanism of n-butane is developed for describing its ignition and combustion characteristics applicable over a wide range of conditions: initial temperature 690–1430 K, pressure 1–30 atm, and equivalence ratio 0.5–2.0. Starting with a detailed chemical reaction kinetic model of 230 species and 1328 reactions (Healy et al., Combust....
Article
Full-text available
Experimental and computational results on the combustion performances and their formation mechanisms were presented and compared in two types of tubular flame burners by using methane as fuel. Results corroborate that the localized stratified tubular flame burner (LSSTFB) can achieve a large stability limit as a consequence of the edge-like flame s...
Article
Full-text available
A three-dimensional numerical simulation of a localized stratified tubular flame burner is carried out by using propane as fuel. The characteristics of the flow field, species distribution, flame structure, and stability limit are investigated. Results show that in the cold flow field, a specific distribution of species is formed due to the unique...
Article
A disc-like gap chamber was developed to investigate the microscale effects on flame propagation characteristics in closed chamber, which is very important to understand the combustion process in micro internal combustion engines. Under initially normal pressure and temperature, the morphology and evolution of outwardly propagating flame, the flamm...
Article
Full-text available
The combustion characteristics of dimethyl ether (DME) in a partially premixed tubular flame burner have been investigated numerically. The species distribution, stability limit of tubular flame, wall temperature and burn-off rate have been studied at different equivalence ratios and inlet velocities. Meanwhile, the corresponding combustion charact...
Article
The concentrations of CO2 and H2O in the combustion environment are important for the combustion characteristics of oxygen-enriched flames using hot oxidizers with large amount of CO2 and/or H2O. To understand the variations of flame temperature and stretch extinction limit of oxygen-enriched flames with H2O and CO2 concentrations, the CH4/CO2 vers...
Article
The combustion characteristics of non-premixed methane micro-jet flame in coflow air were investigated experimentally and numerically. A detailed reaction mechanism was employed in the two-dimension numerical computation. The thermal interaction between the flame and solid tube was considered by using fluid-solid coupled thermal boundaries in the n...
Article
The combustion characteristics of non-premixed hydrogen micro-jet flames in co-flow air were investigated in a wide fuel flow velocity range experimentally and numerically to extend the knowledge on non-premixed micro flame. The direct flame images were captured by a digital reflex camera with long exposure time, and the OH radical distributions in...
Article
Full-text available
The combustion characteristics of methane non-premixed micro-jet-flames in coflow airs were studied experimentally for development of micro-combustor and extension of combustion theory of micro-combustion. Stainless steel tubes with the inner diameters of 710 μ m, 425 μ m and 280 μ m were employed in the study. The flame shapes, heights, blow off l...
Article
A detailed modeling study was performed to investigate the inhibitory effect of the interior surface of a reactor in the process of low-temperature oxidation of methanol–air mixture. By using the reduction technique, which is for the gas-phase kinetic mechanism, a modified nine-step skeletal mechanism for the low-temperature methanol oxidation was...
Article
Full-text available
A surface reaction kinetic model for the combustion of methanol/air mixture was developed in order to investigate the ignition inhibitory mechanism of wall on the premixed gas in a micro closed volume. In this model, except for H, O, OH and CH3 radicals, the absorption of hydrogen peroxide and hydroperoxyl on the surface were also considered. By ap...
Article
Full-text available
The ignition process of premixed methane/air in a micro-scale chamber is simulated with the combination of surface chemistry and gas-phase reactions. The effect of different parameters on the ignition characteristics are analyzed in detail and the sensitive analysis is performed on main elementary reactions. It is found that the ignition of the mix...
Article
To examine the effects of the wall on flame quenching, an OH-PLIF investigation of a premixed methane/air flame was conducted with a slit burner between two parallel walls. Three types of materials, i.e., stainless steel 304, silicon, and zirconia ceramics, were tested at wall temperatures of 300 and 600 °C. The quenching process, captured by an in...
Article
The main objective of this study is to characterise the electric power industry's CO2 emissions and to understand its carbon capture and storage (CCS) prospects in China's Guangdong Province. Coal-fired power plants in Guangdong are the major point sources, contributing to more than 90% of CO2 emissions of the electric power industry. The fossil-fu...
Article
Full-text available
The flame configuration of three linearly arranged premixed micro flames was investigated experimentally by adjusting the distance between tubes, jet velocity and equivalence ratio. Intensified charge coupled device (ICCD) was used to record the flame configurations and the distribution of CH. The result shows that with the decrease of the distance...
Article
This paper presents numerical simulations of premixed combustion of low calorific value gases (LCVGs), providing a description of the flame characteristics in a tubular flame burner. The investigated gaseous fuels were methane diluted with nitrogen, simulating LCVGs with different heat values by regulating quantity of nitrogen. The flame shape and...
Article
Full-text available
Proposed in this paper is a method to measure the temperature of micro flames using an auto-scanning micro thermocouple. In the investigation, first, the effects of thermocouple size and hot flue gas velocity on the measurement error are theoretically analyzed. Next, the effects of data acquisition time interval and thermocouple moving velocity on...
Conference Paper
Full-text available
The effects of flame interaction on flame configuration and temperature distribution among three linearly arranged partially premixed jet micro flames were investigated experimentally. Equivalence ratio, jet velocity and the distance between jet tubes are adjusted to obtain interacting flames with different extents. In the experiment, an intensifie...
Article
A premixed methane/air flame produced by a burner located in a slot between two parallel test plates was used to investigate the influence of the wall surface material on the extinction of a microscale flame. The test results show that the interval of the two plates causing a flame failure is relating to the material and meanwhile will decrease wit...
Article
Combustion and pollutant emission characteristics of premixed low calorific CH 4/N 2/Air have been studied with a swirl-type tubular flame burner. Excess air coefficient was fixed as 1.17 and concentration of N 2 was adjusted to range the calorific value of premixed gas between 3.6~5 MJ/m 3. Result showed flame radius reduces with the decrease of c...
Article
Full-text available
The modeling and numerical simulation of char burning rate within the temperature range of 1273–1700 K, which is the normal range in most boilers and furnaces, were carried out in this paper. Considering the differences in pore structure between char and non-porous carbon, several key issues were studied and discussed, including fresh char reactivi...
Article
This paper investigated the emission characteristic of formaldehyde and NOx in DME/LPG premixed plane flame under different fuel proportions. The results show that the concentration of formaldehyde increases with the mass proportion of DME at the same fuel-air equivalence ratio and fuel mass. The concentration peak value of formaldehyde in the mixe...
Article
A numerical simulation of hydrogen/air premixed flames in micro-channels is performed. To gain a understanding of flame-radical-wall interaction on millimeter and submillimeter scale combustion, the effects of surface reactions including 5 adsorption reactions and 7 desorption reactions on hydrogen/air premixed flames are investigated by comparing...
Article
Effects of different surface conditions on flame quenching of premixed methane/air flame were investigated by using a slit burner between two parallel walls. Influencing factors of effect of different materials on quenching characteristics were discussed basing on surface analysis. The obtained results show that surface temperature and surface char...
Article
Full-text available
An investigation of a premixed methane-air flame was conducted with a slit burner between two parallel walls to examine the effects of wall material and temperature on flame quenching. Three different materials (i.e., zirconia ceramics, stainless steel 304, and Si) were tested at wall temperatures of 100–700°C. The quenching distances for the three...
Article
Effects of different surface conditions on OH intensity above the surface of premixed methane/air flame at slit burner between two parallel walls were investigated by OH-PLIF (Planar Laser-Induced Fluorescence) testing technology. The obtained results show that instability flame propagation appears in slit flame with the decrease of distance betwee...
Article
Dynamical behaviour of the premixed flame propagating in the inert high-porosity micro-fibrous porous media has been studied numerically. Effects of mixture filtration velocity, equivalence ratio and burner transverse size on the flame structure have been investigated and the regions of existence of different combustion regimes have been determined...
Article
Full-text available
Filtration combustion of lean methane-air mixtures in inert, high-porosity micro-fibrous media was studied experimentally in quartz tubes with different diameters. First, an overall stability diagram was obtained. Between the upstream and downstream propagating regimes, a specific rigid standing wave regime was observed, whereas only one standing w...
Article
Measurements of flame appearance, visible flame height, temperature, flow field and NOx emission indes in swirling methane/30%-40% oxygen-enriched air coflow jet diffusion flames are reported. Different swirl number, oxygen concentration, and oxidant velocity are employed to investigate NOx emission characteristics. With the increase of swirl numbe...
Article
Particle Image Velocimetry (PIV) is often used to investigate the real time combustion flow field because of its ability to deliver instantaneous flow field information with high spatial and temporal resolution. In this paper the application of this measurement technique to methane coflow diffusion combustion was presented. Some problems such as pa...
Article
The influence of oxidizer velocity on NOx emission characteristics of methane/oxygen-enriched air coflow jet diffusion flames was investigated experimentally. By means of investigating the radial temperature distributions of flames, flame configurations and the flow fields of diffusion combustion nearby the jet exit, the NOx emission characteristic...
Article
The reduction of NOx emissions in a high-temperature flame is a key factor for furthering the widespread use of oxygen enriched combustion as a new type of energy-saving combustion technology. Based on the theory of NOx suppression realized through the use of flue-gas recirculation, etc and with a counterflow diffusion flame serving as an object of...

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