Temperature definition, a measure of the warmth or coldness of an object or substance with reference to some standard value. \ (Chimie) Point d’auto-inflammation, point d’auto-ignition, point d’allumage spontané. It is a comparative measure of how hot or cold a material is. Les exemples vous aident à traduire le mot ou l’expression cherchés dans des contextes variés. Experimental … Definition. Contenu potentiellement inapproprié . autoignition temperature: The minimum temperature needed for self-sustained combustion in absence of a spark or flame, at which the vapours from a volatile liquid will ignite spontaneously. As a result, the ignition temperature is of course higher than the flash point. The standards writers had to come up with a clear definition for ignition, and as you note, they did: "the appearance of a flame accompanied by a sharp rise in the temperature of the gas mixture." Most people chose this as the best definition of ignition-temperature: The lowest temperature at... See the dictionary meaning, pronunciation, and sentence examples. where T ib is the temperature at the commencement of the steepest slope in the DTA or DSC thermogram. Déverrouiller. Point d'auto ignition: température où le liquide s'enflamme spontanément sans … Gratuit. Synonymes [modifier le wikicode] kindling point; Voir aussi [modifier le wikicode] autoignition temperature sur l’encyclopédie Wikipédia (en anglais) Information and translations of ignition temperature in the most comprehensive dictionary definitions resource on the web. According to the U.S. Department of Agriculture, studies on wood ignition conclude that there is not a fixed temperature for ignition, and the moment of ignition largely depends on the amount of exposure time, the density of the wood and the … As this temperature is varying with the layer height, it is necessary to precise it : 5 mm is a quite general value. It is also used to characterize the fire hazards of fuels. Parcourez les exemples d'utilisation de 'température d'auto-ignition' dans le … A chemical change, especially oxidation, accompanied by the production of heat and light. If a dust cloud enters in contact with a hot surface, it may auto-ignite and explode. chər] (chemistry) The lowest temperature at which combustion begins and continues in a substance when it is heated in air. Vérifiez la prononciation, les synonymes et la grammaire. The temperature of two systems is the same when the systems are in thermal equilibrium. Definition from Wiktionary, the free dictionary. Ignition temperature is valid for the specific test conditions (leak rate, deformations, damages, ambient temperature etc.) Forums pour discuter de ignition temperature, voir ses formes composées, des exemples et poser vos questions. Point d'inflammation: température où la quantité de vapeurs émises par le solvant est suffisante pour que la combustion continue même si l'on retire la source de chaleur à l'origine de l'inflammation. The autoignition temperature or kindling point of a substance is the lowest temperature at which it will spontaneously ignite in a normal atmosphere without an external source of ignition, such as a flame or spark. I read through various websites and there are both kinds of definitions put up! The minimum temperature required to self ignite a dust layer is called self ignition temperature SIT or smouldering temperature. In other words, the ignition temperature is the lowest temperature at which a volatile material will be vaporised into a gas which ignites without the help of any external flame or ignition source. Ignition temperature synonyms, Ignition temperature pronunciation, Ignition temperature translation, English dictionary definition of Ignition temperature. the proposed value in the definition for the auto-ignition temperature; and. So wanted to know what the proper definition of ignition temperature is and how it differs from flash point. La température est une grandeur physique mesurée à l’aide d’un thermomètre et étudiée en thermométrie.Dans la vie courante, elle est reliée aux sensations de froid et de chaud, provenant du transfert thermique entre le corps humain et son environnement. traduction The ignition temperature dans le dictionnaire Anglais - Francais de Reverso, voir aussi 'ignition key',ignition key',ignite',imagination', conjugaison, expressions idiomatiques Temperature > 800 °C: Not evaluated! Jump to navigation Jump to search The weight loss curve is used to define the ignition temperature. (minimum combustion temperature) température d'ignition nf nom féminin : s'utilise avec les articles "la", "l'" (devant une voyelle ou un h muet), "une" . autoignition temperature \ Prononciation ? The key difference between flash point and auto ignition temperature is that flash point determines the lowest temperature at which vapour of a material starts ignition in the presence of an ignition source whereas auto ignition temperature is the lowest temperature at which a material can start ignition spontaneously.. Spontaneous combustion of coal stockpiles can occur when the environment temperature exceeds the critical self-ignition temperature (CSIT), which strongly depends on the pile volume. Also known as autogenous ignition temperature; ignition point. The coldest theoretical temperature is called absolute zero.It is the temperature where the thermal motion of particles is at its minimum (not the same as motionless). ignition temperature translation in English - French Reverso dictionary, see also 'ignition key',ignition key',ignite',imagination', examples, definition, conjugation n. 1. What is ignition temperature: Ignition temperature is also called autogenous ignition temperature or kindling point. ignition temperature definition in English dictionary, ignition temperature meaning, synonyms, see also 'ignition coil',ignition key',electronic ignition',ignitron'. 3rd Meeting WG on safety aspects of the use of R1234yf on MAC systems - Ispra, 24 January 2014. For a wood ignition time of less than one minute, the wood must be heated to a temperature of 430 degrees Celsius or 806 degrees Fahrenheit. The flash point is a descriptive characteristic that is used to distinguish between flammable fuels, such as gasoline (also known as petrol), and combustible fuels, such as diesel.. This video explains what combustion is, which combustible and which are non-combustible materials and how things burn. Ignition Temperature Petrol 247–280 °C (477–536 °F) Diesel 210 °C (410 °F) Phosphorus,white 34 °C (93 °F) Ethanol 365 °C (689 °F) Iron 1,315 °C (2,399 °F) Paper 218–246 °C (424–475 °F) Lead 850 °C (1,560 °F) Leather 200–212 °C (392–414 °F) Hydrogen They even say that ignition is a subjective term, so they are careful to define it clearly. La valeur proposée dans la définition de la température d'auto-inflammation; et. Rags soaked with linseed oil are notorious for spontaneously (auto)igniting. When a powder deposit covers a source of heat, it can lead to self ignition of the dust layer which starts to smoulder. Some also mentioned a flash point. Ils ne sont ni sélectionnés ni validés par nous et peuvent contenir des mots Thanks! Meaning of ignition temperature. The autoignition temperature of a substance is the temperature at or above which a material will spontaneously ignite (catch fire) without an external spark or flame.. Additional Info. Abbreviation: T See more. Définitions de Auto-ignition_temperature, synonymes, antonymes, dérivés de Auto-ignition_temperature, dictionnaire analogique de Auto-ignition_temperature (anglais) (Redirected from ignition temperature). 3. As the name implies (autogenous), at this temperature, ignition source is not required to ignite; it is an auto process. Fuels. Table 16.7 lists the auto-ignition temperatures for several energetic compounds (Huang and Wu 1994). ignition temperature - traduction anglais-français. The process of burning. Apprendre la définition de 'température d'auto-ignition'. 2. To understand the difference between ignition temperature and fire point, we must first understand the definition of the two (2) parameters. pyrolysis is a definition,4 not a theory or a misunderstood process. What does ignition temperature mean? Ignition temperature definition is - the lowest temperature at which a combustible substance when heated (as in a bath of molten metal) takes fire in air and continues to burn —called also autogenous ignition temperature. However, it does not clarify whether it is on its own or due to an external source. Enrich your vocabulary with the English Definition … Anglais Définition Anglais Synonymes Anglais Simplifi ... After encountering the catalyst, the combusted fuel increases the temperature of the air to an auto-ignition temperature so that no other ignition source is needed to combust additional fuel. Definition of ignition temperature in the Definitions.net dictionary. Temperature is the property of matter which reflects the quantity of energy of motion of the component particles. 2. The Minimum Ignition Temperature is the minimum temperature for which a hot surface will ignite a dust cloud [Laurent]. ignition temperature n noun: Refers to person, place, thing, quality, etc. Definition of MIT What is the MIT of a dust ? Definition of SIT.
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