[Q&A Question 226] 2017.08.14
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【Q&A Question 226】August 14, 2017: What is the significance of controlling the 98% point temperature of aviation kerosene? The reference answers will be visible after responding; points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The aircraft flies at high altitudes, where the specific gravity of aviation fuel is high; this ensures an adequate calorific value. Crystallization of the aviation fuel can block the filters, resulting in reduced or even interrupted fuel supply, and may even cause engine failures. Controlling the temperature at the 98% point helps to adjust both the specific gravity and the crystallization point of the aviation fuel. If this temperature is too low, the crystallization point is within acceptable limits, but if the specific gravity is too high, the crystallization point becomes too high as well. Therefore, maintaining an appropriate temperature at the 98% point is necessary to ensure that both the crystallization point and the specific gravity of the aviation fuel meet the specified requirements. After 7 days of daily activities, it shuts down and shows the answers automatically. Scoring criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers, provided with detailed explanations; 15–20 Wealth points for correct answers with additional *insufficient* details. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be given points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming; points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Zone – “Creative Ideas for Energy Savings” campaign (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Aviation fuel has a high density, a high volumetric calorific value, and allows for long flight ranges； High jet fuel crystallization can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures ； By controlling the temperature at 98% of the flash point of aviation kerosene, it is possible to adjust its specific gravity and freezing point so that both values meet the specified requirements.
Aviation fuel has a high density, a high volumetric calorific value, and allows for long flight ranges； High jet fuel crystallization can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures ； By controlling the 98% point temperature of aviation kerosene, its specific gravity and freezing point can be adjusted to ensure that both the freezing point and specific gravity meet the specified requirements.
Aviation fuel has a high density, a high volumetric calorific value, and allows for long flight ranges； High jet fuel crystallization can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures ； By controlling the 98% point temperature of aviation kerosene, its specific gravity and freezing point can be adjusted to ensure that both the freezing point and specific gravity meet the specified requirements.
Aviation fuel has a high density, a high volumetric calorific value, and allows for long flight ranges； High jet fuel crystallization can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures ； By controlling the 98% point temperature of aviation kerosene, its specific gravity and freezing point can be adjusted to ensure that both the freezing point and specific gravity meet the specified requirements.
Aviation fuel has a high density, a high volumetric calorific value, and allows for long flight ranges； High jet fuel crystallization can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures ； Controlling the 98% point temperature of aviation kerosene allows the adjustment of its specific gravity and freezing point; only by achieving an appropriate level for these parameters can both the freezing point and specific gravity of the aviation kerosene meet the specified requirements
Aviation fuel has a high specific gravity, which is necessary to ensure an adequate calorific value. Crystallization of aviation fuel can clog the filters, resulting in reduced or even interrupted fuel supply, and may even cause aircraft failures. By controlling the temperature at the 98% point, it is possible to adjust both the specific gravity and the crystallization point of aviation fuel. When this temperature is too low, the crystallization point meets the requirements; however, if the specific gravity is too high while the crystallization point remains high, appropriate control of the 98% point temperature is essential to ensure that both the crystallization point and specific gravity of the aviation fuel meet the specified standards.
The final boiling point of aviation fuel affects its specific gravity and whether it burns completely
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This post was last edited by wangld on 2017-8-14 at 11:01. When an airplane flies at high altitudes, the specific gravity of aviation fuel is important in order to ensure an adequate heat value. Crystallization of aviation fuel can block filters, resulting in reduced or even interrupted fuel supply, and may even cause engine failures. The temperature at the 98% point is controlled in order to adjust both the specific gravity and the crystallization point of aviation fuel. If this temperature is too low, the crystallization point is within acceptable limits; however, if the specific gravity is too high while the crystallization point remains high, appropriate control of the 98% point temperature is necessary to ensure that both the crystallization point and specific gravity meet the specified requirements.