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Fuels
Published in Kenneth M. Bryden, Kenneth W. Ragland, Song-Charng Kong, Combustion Engineering, 2022
Kenneth M. Bryden, Kenneth W. Ragland, Song-Charng Kong
Autoignition temperature is the lowest temperature at which ignition occurs spontaneously in a standard container with atmospheric air in the absence of a spark or flame and without regard to the ignition delay time. The autoignition temperature of alkanes (hydrocarbons of the form CnH2n+2) decreases with increasing molecular weight (Table 2.3). As autoignition temperature. In general, autoignition temperature is an indication of the relative difficulty of combusting a fuel. Autoignition temperature varies with the geometry of the hot surface and other factors such as pressure.
Common Sense Emergency Response
Published in Robert A. Burke, Common Sense Emergency Response, 2020
Physical and chemical characteristics will vary depending on the mixtures, which will very likely be different from one manufacturer to another. The mixture listed above has a flashpoint of −45°F, which is the same for most blends of gasoline, and an autoignition temperature >540°F. Some sources list gasoline mixtures with ignition temperatures in the 800°F range. Diesel fuel is also a mixture made up of diesel fuel and naphthalene and other additives. Diesel fuel has a flashpoint of >125°F and an autoignition temperature of 500°F. Diesel fuel is usually harder to ignite than gasoline, but when diesel fuel does ignite, it has a greater heat output than gasoline and may be harder to extinguish. Dry chemical and foam are the most common extinguishing agents depending on the amount of fuel on fire for both gasoline and diesel fuel.
General Princlpes
Published in Martin B., S.Z., of Industrial Hygiene, 2018
The autoignition temperature is the temperature at which a material will ignite without an external source of ignition. It is also known as the ignition temperature or autogenous ignition temperature. If a liquid is heated and any ignition sources isolated, there will be a point where the liquid will ignite. Most of these temperatures are determined under laboratory conditions, but in real-world situations this temperature can be affected by other variables. Therefore, it is important to note that this temperature should not be considered as a constant.
Performance and emission analysis of a naturally aspirated and supercharged IDI diesel engine using palm methyl ester
Published in Biofuels, 2020
Aditya Kolakoti, B. V. Appa Rao
The fatty acid compositions were measured by following the international standards ISO 5509 using gas chromatography (Agilent 6890 GC). The GC was equipped with a capillary column DB-5MS (30 m/0.25 μm) and helium was used as the carrier gas at a constant flow rate of 1.2 mL/min. The obtained saturated and unsaturated fatty acids are depicted in Table 1 and Figure 1. The kinematic viscosity was measured with a Canon-Fenske capillary viscometer (TV2000AKV) at a constant temperature (40°C) following American Society for Testing and Materials (ASTM) D445, EN ISO 3104. Density was measured following ASTM D1298. A CTL 19 Autoignition test apparatus was used to determine the autoignition temperature (ASTM E659). A Toshniwal Digital Bomb Calorimeter was used to measure the amount of heat generated when matter is burnt in a sealed chamber in an atmosphere of pure oxygen gas (IS: 1359–1959).