Example of piloted ignition
WebJan 1, 2013 · Piloted ignition of solid fuels is investigated by simulating the transport and chemical reaction in a counter-flow arrangement where a known fuel (methane) is …
Example of piloted ignition
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WebNuclear Regulatory Commission WebThe most commonly used criteria for piloted ignition are discussed. Correlations used in piloted ignition studies from the past 40–50 years are summarized. Many investigators have been successful in correlating piloted ignition data of wood using a simplified thermal model in combination with a critical surface temperature criterion.
WebJan 1, 2024 · This work studied the piloted ignition of electrical wires in both normal gravity and microgravity using the laser-induced spark. Unique experiments were conducted in the microgravity parabolic flight with laboratory wires under the oxygen concentration of 14–21% and external radiation of up to 15.9 kW/m 2.The wire sample consists of a 2.5-mm thick … WebAn example of this would be dry ice. Figure 11: Changes to wood exposed to heat. ... Piloted Ignition. In piloted ignition, a flammable mixture is formed above the bulk fuel. An external source, direct input, of energy (i.e., flame or spark) then ignites the mixture. The energy needed to ignite the material may come in the form of radiant ...
WebThe physical phenomenon of piloted ignition of a material is described. A number of mathematical models of this phenomenon are presented in order of decreasing … WebMay 14, 2002 · A fuel's piloted ignition temperature is the heat level required to form a gas that will ignite when exposed to a spark. At the unpiloted ignition temperature, which is …
WebFigure 5 shows the examples of the piloted ignition process of the single horizontal wood rod (Group II) as well as the wood rod bed (Group III, Supplementary Videos 4-7).
WebIn this work, the piloted ignition of cylindrical wood rods with different diameters (3.2 ~15.9 mm) are conducted under the irradiation up to 50 kW/m2. Three fuel groups are tested: (I) single vertical rod, (II) single horizontal rod, and (III) horizontal rod bed attached to the ground. ... Figure 5 shows the examples of the piloted ignition ... how many pinches in 1/8 teaspoonWebApr 1, 2024 · Dripping ignition of paper with the drip size of 4.6 mg and frequency of 1 Hz (a) failed ignition by six drips (Video S1) and (b) ignition by seven drips of 0.18-mm cardstock paper and the drip ... how chickens are farmedWebsamples was studied and the corresponding piloted ignition tests were made on smaller samples of the same wood. In the vertical sample mode, lateral flame spread and piloted ignition tests were conducted in a radiant panel test apparatus. The results for the two types of wood were qualitatively similar, thus data for only mahogany are presented ... how chicken sausage is madeWebSpontaneous combustion often occurs in piles of hydrocarbon-soaked (oily) rags and can constitute a serious fire hazard. Fires started by spontaneous combustion are caused by the following mechanisms: (1) spontaneous heating, (2) pyrophoricity, and (3) hypergolic reactions. Spontaneous heating is the slow oxidation of an element or compound ... how chickens are raised for meatWebIn this work, the effect of seven different sample orientations from 0° to 90° on pilot and non-pilot ignition of PMMA (poly(methyl methacrylate)) exposed to radiation has been studied with experimental and numerical methods. Some new and significant conclusions are drawn from the study, including a U-shape curve of ignition time and critical mass … how chickens are slaughteredWebPiloted ignition is most often specified in flammability testing since it is more conservative to assume that an ignition source is always available. Furthermore, ... a varying external … how chickens are killedWebFor piloted ignition to occur, the solid must first decompose to produce combustible gases. These gases then mix with the surrounding air to produce a flammable mixture which ... measurements of weight loss rate, ignition time, sample surface and bottom temperatures, production of water vapor, CO2, CO, total hydrocarbons, and depletion of O2 ... how chickens are bred