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The Ignition Temperature. As in the case of synthetic polymers, the ignition temperature was determined through three methods. The first was experimental. The …
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In order for an ignition source to ignite a material at its flash point temperature, the ignition source must be at the ignition temperature of the liquid. For example, if you placed gasoline in a container and used a lit cigarette to ignite the gasoline, you would be wasting your time. The temperature of a lit cigarette is around 400°F, and ...
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However, the ignition temperature has no effect on the initiation stage of methane combustion. At a low temperature of 150 K, the critical ignition radius for methane initiation is 4.6 mm, while it is 3.9 mm at room …
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Fig. 5 (a) shows the results of the lower limit of ignition temperature at ϕ = 1. The spark plug successfully ignited the mixture at 745 K and higher temperatures but failed to ignite at 730 K and lower temperatures, suggesting that the lower ignition temperature limit of spark plugs T limit-sparkplug is in the range of 730 K-745 K. However ...
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Characteristic of Auto Ignition Temperature due to the Mixture Ratio of Ethylene Glycol and Water. February 2016; Fire Science and Engineering 30(1):24-30; DOI: 10.7731/KIFSE.2016.30.1.024.
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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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the influence of the energy retention on the minimum ignition energy using a two-dimensional numerical analysis. Kravchik and Sher (1994) studied ignition characteristic and flame propagation in methane/air mixture by numerical methods. Han et al. (2010) studied the spark ignition characteristics of methane/air mixture using detailed chemical ...
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The high-temperature auto-ignition characteristics of NH 3, CH 4, NH 3 /CH 4, NH 3 /H 2, NH 3 /H 2 /CH 4, and air mixtures were compared through a combination of shock tube experiments and kinetic simulations. The following conclusions were drawn: (1)
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The dimensionless parameter for hot surface temperature can be expressed as: (8) T * = T S-T 0 T l-T 0 where T S is the hot surface temperature; T 0 is the ambient temperature; T l is the lowest ignition temperature, which can be obtained from the characteristic ignition parameters in Table 1.
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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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Various marine fuels exhibit different ignition characteristics on high-temperature surfaces, and the time required for HSI has discrepancies. There are two basic prerequisites for the local ignition of marine fuel that has …
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In recent years, the study of volumetric ignition using high-speed (nanosecond) pulsed low temperature plasma for gasoline engines was reported by authors [ 1].However, the fundamental analysis of ignition characteristics of the low temperature plasma ignition and the analysis of combustion initiation mechanism of the low temperature plasma ignition was not …
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Processing and Ignition Characteristics of Aluminum-Bismuth xide Nanothermite System. ... Self-Propagating High-Temperature Synthesis. 1 Jan 2021. Stability study of iodinated reduced graphene oxide and its application in self-assembled Al/Bi 2 O 3 nanothermite composites. 19 November 2020 | Nano Futures, Vol. 4, No. 4. SnO 2 …
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Ammonia (NH 3) and hydrogen (H 2) mixture are expected to replace traditional fossil fuels in the transportation industry to achieve zero-carbon emissions.Adopting turbulent jet ignition (TJI) is a reliable way to enhance the ignition and combustion of NH 3 /H 2.The present study aims to explore the effects of initial pressure and temperature on the ignition and …
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The above studies have shown that the co-combustion of CH 4 /H 2 /NH 3 ternary fuel has significant potential as an alternative fuel for ICE and GT. To gain further insight into the fundamental combustion characteristics of the ternary combustion system, this study aims to measure the high-temperature ignition IDT of CH 4 /H 2 /NH 3 ternary fuel using an ST …
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Ammonia (NH 3) and hydrogen (H 2) mixture are expected to replace traditional fossil fuels in the transportation industry to achieve zero-carbon emissions. Adopting turbulent jet ignition (TJI) is a reliable way to enhance the ignition and combustion of NH 3 /H 2.The present study aims to explore the effects of initial pressure and temperature on the ignition and …
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DOI: 10.1016/J.FUEL.2016.06.089 Corpus ID: 102441095; The investigation of the coal ignition temperature and ignition characteristics in an oxygen-enriched FBR @article{Junnan2016TheIO, title={The investigation of the coal ignition temperature and ignition characteristics in an oxygen-enriched FBR}, author={Chao Junnan and Hairui Yang …
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The ignition and combustion of boron–magnesium alloys were studied with the ignition wire method and laser ignition infrared temperature measurement. The results show that MgB2 has good ignition characteristics with maximum ignition temperatures obtained by the two various methods of 1292 K and 1293 K, respectively.
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CHARACTERISTICS of an explosive are attributes measured as a performance value after or during the chemical reaction. Robert Weinheimer Published: 27th International Pyrotechnics Seminar, July 2000 ... Density, Crystal Hardness, Auto Ignition Temperature, Critical Temperature, Melt Point, Decomposition Temperature, Gas Volume, Temperature of ...
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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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Influence of Water Immersion Time on Re-Ignition Characteristics of High Temperature Oxidized Coal Yun-Chuan Bu a Sch Civil & Resources Engn, Univ Sci & Technol Beijing, Beijing, Peoples R China Hui-Yong Niu a Sch Civil & Resources Engn, Univ Sci & Technol Beijing, Beijing, Peoples R China Correspondence niuhuiyong@163
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When the temperature was ≥471 °C (880 °F), glowing embers and ignition were observed in some cases. It took several seconds for ignition to occur. Summary. Clothes dryer lint samples were exposed to a variety of high temperature conditions to characterize the temperature at which ignition of the lint could occur.
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The effect of elevated pressure and temperature on ignition phenomena of a methane/air premixed mixture was investigated using a DBD igniter. ... From the results of the ignition characteristic ...
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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 temperature. How would a fuel/air mixture in which there is not enough fuel be described? Too lean. What characteristic of a gas is quantified as its vapor density? Its weight relative to air. What is the vapor density of air? 1. What does …
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Among them, the characteristic ignition temperature of most concern in this paper was the lowest ignition temperature. The lowest ignition temperature represented the temperature threshold and safety boundary of the hot surface around the liquid fuels, and the …
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This study investigates the fundamental spark-ignition characteristics under engine-relevant environments, focusing on spark discharge energy and the shapes of spark …
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Nevertheless, the application of natural gas in compression ignition (CI) engines faces challenges attributed to its inherent low reactivity, giving rise to difficulties in regulating ignition timing, incomplete oxidation, and susceptibility to misfires, particularly under low-temperature conditions [5].Since the advancements in combustion technology, the dual-fuel …
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In the hot surface tests, ignition parameters were measured and investigated, including ignition probability and characteristic ignition temperature. It was found that the …
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Knowing the temperature graph during the ignition process can help reduce air pollution because temperature is considered a significant factor affecting the rate of a …
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This study investigates the combustion characteristics of KI-25# transformer oil under varying radiation conditions using a cone calorimeter experiment. Parameters such as ignition time, mass loss rate, heat release rate, total heat release, fire performance index, fire growth index, and other relevant factors were analyzed. The aim was to evaluate combustion …
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Studies focusing on the combustion processes of single fuel particles have been carried out for over four decades and nowadays, the study is still one of the most important stages in various fundamental coal research techniques [11].Molina and Shaddix [12, 13] investigated the ignition and devolatilization characteristics of pulverized coal particles in N 2 and CO 2 …
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The reason was that raising initial temperature enhanced the heat on ignition grain surface and shortened the temperature difference with the ignition temperature. 27 Therefore, under same on-load voltage, fewer external energy was required to make the oxidizer and fuel gases reach the critical ignition state which led to more shorter ignition ...
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In the present work, ignition delay times of ethylene/air mixtures were measured at temperatures of 721 to 1307 K, pressures of 0.97 to 20.54 atm, and equivalence ratios of 0.5, …
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Knowing the temperature graph during the ignition process can help reduce air pollution because temperature is considered a significant factor affecting the rate of a chemical reaction 26 ...
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The combustion behavior of fuel blends in burners will be affected by the individual ignition characteristics of biomass and coal. The ignition temperature is defined as the minimum temperature at which a fuel ignites spontaneously in an environment without external source of ignition [7]. The ignition temperature of biomass is highly related ...
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