Dynamic viscosity dependence on temperature for fuels used for diesel engine

IF 1 Q4 CHEMISTRY, MULTIDISCIPLINARY Ovidius University Annals of Chemistry Pub Date : 2021-01-01 DOI:10.2478/auoc-2021-0014

I. Niță, Sibel Osman, O. Iulian

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引用次数: 1

Abstract

Abstract Viscosity is an important property of fuels used for diesel engine affecting engine’s efficiency and harmful gases emission. Viscosity of liquid fuels depends especially on fuels composition and temperature. The dynamic viscosity of diesel fuel, biodiesel and blends of diesel with biodiesel, i-propanol and n-butanol was measured for temperature ranging from 293.15 K to 323.15 K and atmospheric pressure. It has been verified that well-known Arrhenius derived equations can be used to estimate with good accuracy, viscosity at different temperatures for diesel, biodiesel, diesel+biodiesel blends, but also for diesel blends with propanol and butanol. Values of activation parameters: activation energy, activation enthalpy and activation entropy for the viscous flow were derived based on linearized Eyring’s type equation. The values of the activation energy for viscous flow of fuels and fuels blends calculated based on measured values of dynamic viscosity in the temperature range of 273.15 K and 323.15 K were similar to those presented in the literature for some hydrocarbons, esters, and alcohols, respectively.

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柴油机用燃料的动态粘度随温度的变化

摘要粘度是柴油机燃料的一项重要特性，影响着柴油机的使用效率和有害气体的排放。液体燃料的粘度主要取决于燃料的成分和温度。在293.15 ~ 323.15 K的温度和常压条件下，测定了柴油、生物柴油和生物柴油与i-丙醇、正丁醇的混合物的动态粘度。经验证，著名的Arrhenius推导方程可以很好地估计柴油、生物柴油、柴油+生物柴油混合物以及与丙醇和丁醇混合的柴油在不同温度下的粘度。根据线性化的Eyring型方程，推导出黏性流动的活化能、活化焓和活化熵。在273.15 K和323.15 K的温度范围内，根据动态粘度测量值计算的燃料和燃料混合物的粘性流动活化能值与文献中给出的一些碳氢化合物、酯类和醇类的活化能值相似。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ovidius University Annals of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

自引率

11.10%

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审稿时长

5 weeks