Optical investigation on low-temperature lean combustion
Effect of injection pressure on the impinging spray and ignition characteristics of the heavy-duty diesel engine under low-temperature conditions Appl Energy, 262 ( 2020 ), Article 114552, 10.1016/j.apenergy.2020.114552
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Impact of a polysidpersed fuel distribution on the ignition …
Obtaining the temperature profile of fuel during combustion is essential. Fuel profiles with long ignition times prolong engine operation over a given fuel volume. This …
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Comparison of ignition characteristics between annular and …
The increase of equivalent ratio increases the flame temperature after ignition. It increased the expansion of hot gases that promotes flame speed. ... To establish the coupling connection of the ignition characteristics between the multi-injector burner and the annular combustor. The flame propagation was investigated experimentally in a multi ...
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Study on ignition characteristics of single biomass and coal …
In this work, the ignition characteristics of single particles of two biomass samples (CS, WS) and four coal samples (XM, IM, ... Experimental and theoretical analyses on ignition and surface temperature of dispersed coal particles in O 2/N 2 and O 2/CO 2 ambients. Fuel, 201 (2017), pp. 93-98. View PDF View article View in Scopus Google Scholar
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Fuels and Chemicals
132 rows"the minimum temperature required to ignite a gas or vapor in air without a spark or …
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Ignition Temperature
Ignition Temperature is defined as the lowest temperature at which a material can ignite and sustain combustion without the need for a spark or flame. AI generated definition based on: …
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Study on pore structure change and lean oxygen re-ignition
Xu analyzed the re-ignition characteristics of high-temperature oxidized water-immersed coal samples and concluded that the pore diameter of high-temperature oxidized water-immersed coal samples was increased, which improved the …
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Handbook of Aviation Fuel Properties
AVIATION •FuEL "PROPERTIES.I. REPRODUCED FROM BEST AVAILABLE COF'tý Lu • Coordinating Research Cc 10 r
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Experimental study on the spark ignition characteristics at …
Experimental study on the spark ignition characteristics at elevated temperature and pressure under flow conditions. Author links open overlay panel Myoungsoo ... focusing on spark discharge energy and the shapes of spark channels. The pressure, temperature, and mean flow velocity conditions were independently controlled (up to 20 bar, 567 K ...
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RESEARCH ON HOT SURFACE IGNITION …
Key words: Ignition characteristics; HSI; thermal mechanism; multi-factor influence; ship engine room fire ... temperature. Ignition height above the hot surface is studied by Bennett [10-11], the ...
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IGNITION CHARACTERISTICS OF FUELS AND LUBRICANTS
Ignition temperatures of n-hexane, n-octane, n-decane, JP-6 jet fuel and aircraft engine oil MIL-L-7808 (0-60-18) were determined in air using heated Pyrex cylinders of 0.314-inch to 1.38-inch …
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IGNITION CHARACTERISTICS OF A COMBUSTIBLE …
Temperature Distribution 5.1.7. Heat Transfer Rate Dependencw e on f 5.1.8. Dependence ofw Dj ^ on f 5.2. Results of the Opposed-Jet Case ... The ignition characteristics of a combustible mixture in opposed flow with a hot inert gas have been considered. Two cases were studied: (i) a jet of a combustible mixture ...
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Ignition characteristics of methane-air mixture at …
In this paper, FLUENT software coupled with the chemical reaction mechanism is used to study the ignition characteristics of methane-air mixtures at low temperature.
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Experimental study on the ignition characteristics of …
Ignition temperature of biomass is predictable via its chemical compounds. Abstract. Ignition behaviour of biomass is an essential knowledge for plant design and process control of biomass combustion. Understanding of ignition characteristics of its main chemical components, i.e. cellulose, hemicellulose, lignin and their mixtures will allow ...
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Experimental study on hot surface ignition and flame …
The average flame temperature measured by the thermocouple at the bottom of the tank ranges from 1162 to 1347 °C, significantly higher than the flash point of LO and the …
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The investigation of the coal ignition temperature and ignition …
The coal ignition temperature and ignition characteristics are important factors for boiler design and for choosing the feeding temperature during the transition from air-firing to oxy-firing. The ...
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Investigation on the ignition, thermal acceleration and characteristic
The ignition temperature was taken as the temperature at which these curves reached a value of 10%. Coal rank and particle size were found to influence the ignition temperatures of the coal and char particles. ... The influence of char rank on ignition behavior and characteristic temperature is shown in Table 3. All characteristic temperatures ...
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Experimental Research on Heat Transfer and Ignition Characteristics …
As for the temperature of the electrode, the larger current causes a higher electrode temperature. A semi-infinite solid ignition model is used to deal with the ignition process of the combustibles. Experimental results show that there is a good linear relationship between the current (I 2) and the ignition time (t ig − 1 / 2). This study ...
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Study on Spontaneous Combustion Characteristics and …
reaction temperature and the peak weight loss rate temper-ature.13 Liu et al., utilizing a temperature programming test system (TPTS), assessed the reignition process of noncaking coal subjected to water immersion and prior oxidation, subsequently calculating its self-ignition characteristics and low-temperature oxidation limit parameters.
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Experimental study on the effect of discharge
The discharge characteristic tests and ignition characteristic experiments are conducted in NH 3 /air mixtures, with the excess air ratio (λ) maintained at λ = 1 and the initial temperature (T 0) at T 0 = 363 K. The discharge parameters employed in the experiments are presented in Table 1.
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Study on Ignition Characteristics of Rocket Kerosene in …
ignition characteristics of kerosene [11]. Vasu et al. used shock tubes to investigate the ignition characteristics of Jet-A and JP -8. The experimental pressure range was 1.7 -5.1 MPa, and the temperature range was 715-1229 K. but oxygen content is only 10% and 21% [12-15]. Korzhavin et al. studied the spread of oil film fire on metal plates
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Ignition characteristics and temperature measurements for …
Ignition characteristics and temperature measurements for silane/N 2 Air opposed jet diffusion flames. Author links open overlay panel Seiichiro Koda, ... experimental investigations covering a wide range of release conditions to enable a full understanding of silane ignition and explosion characteristics.
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Auto-ignition characteristics of coal-based naphtha
The temperature ranges from 778 K to 1035 K provided the full history of heat release rate during the reaction proceeding of T eoc = 770 K. It is observed that within the temperature range of 778 K to 984 K, the ignition mode was auto-ignition, in which maximum HRR increased from 1400 to 12,000 kW/cm 3 as the chemical reaction proceeds. The ...
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Numerical study of high-energy spark ignition characteristics …
It also conducts a mechanism analysis on the transient ignition characteristics under successful ignition conditions for both igniters, providing valuable references for future igniter design and engine performance enhancements. ... Fig. 8 illustrates the contours of temperature after ignition using two igniters at φ = 0.25, and the change in ...
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Study of low-temperature ignition characteristics in a …
In this paper, the ignition and combustion characteristics of kerosene fueled supersonic combustor at low temperature were studied using hydrogen-guided flame ignition and no-support palate spark block and spark block with support block under the incoming flow condition of Ma = 2.0, total temperature 700 K and total pressure 520 kPa.
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New insights into the ignition characteristics of liquid …
investigated, including ignition probability and characteristic ignition temperature. It was found that the ignition of liquid fuel on the hot surface was probabilistic. The boil-over phenomenon was observed for transformer oil when the hot surface temperature was above 693 K, where the liquid fuel burned over the pan.
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Effects of Cu(OH)F nanoparticles on the thermal oxidation and ignition …
HF was reported capable of a pre-ignition reaction with alumina shell to produce AlF 3, whose sublimation in the high temperature region could help the aluminum core to participate in the oxidation reaction and thus promoted the ignition of μ-Al [29]. Meanwhile, it is supposed that the generated metal oxides are also capable of thermal ...
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Ignition Characteristics and Flame Behavior of Automotive …
The lowest ignition temperature and the highest ignition temperature of the hot surface are significantly negatively correlated with the oil volume. As the oil quantity increases from 0.1 mL to 0.5 mL, the minimum ignition temperature decreases from 370 °C to 312 °C, and the maximum ignition temperature decreases from 415 °C to 355 °C.
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Ignition characteristics of the nickel-based alloy UNS …
NISTIR89-3911 IGNITIONCHARACTERISTICSOFTHE NICKEL-BASEDALLOYUNSN07718 INPRESSURIZEDOXYGEN N JamesW.Bransford PhillipA.Billiard JamesA.Hurley KathleenM.McDermott ...
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New insights into the ignition characteristics of liquid fuels …
In this study, thermogravimetric analysis and hot surface tests were systematically conducted for some typical liquid fuels. In the hot surface tests, ignition parameters were …
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