为探究温度对生物柴油-乙醇-柴油三元燃料运动黏度的影响规律,以大豆油、小桐子油和餐饮废油生物柴油-乙醇-柴油3种燃料为研究对象,建立三元燃料“运动黏度-温度”高精度数学模型,该模型复相关系数均在0.99以上,最大误差为0.03,能精确预测燃料运动黏度随温度的变化规律。结果表明,餐饮废油混合燃料的黏度梯度最大,受温度影响程度最高,流动性能变化显著。3种三元混合燃料的临界预热温度分别为59.1、63.4和61.7 ℃,燃料在预热温度之下运行成本最低、雾化效果最佳。
Abstract
In order to study the effect of temperature on the kinematic viscosity of ternary fuel blends,the biodiesel （soybean oil/Jatropha oil/waste cooking oil）-ethanol-diesel fuel blend are prepared. A mathematical model which could precisely describe the influence of temperature on kinematic viscosity of ternary fuel blends is established. The complex correlation coefficient of the model is higher than 0.99 while the maximum error is 0.03. According to the fitting results, the highest viscosity gradient of waste cooking oil biodiesel-ethanol-diesel fuel blend would be influenced by temperature greatly and the flow property of which is also changed remarkably. Furthermore, the critical preheating temperature values for three kinds of ternary fuel blends are 59.1 ℃, 63.4 ℃ and 61.7 ℃, respectively and the operating cost are lowest and the atomization effect are the best when the blends are preheated at the critical preheating temperatures.
关键词
生物柴油 /
运动黏度 /
数学模型 /
黏度梯度 /
临界预热温度
Key words
biodiesel /
kinematic viscosity /
mathematical models /
viscosity gradient /
critical preheating temperature
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基金
国家自然科学基金（51766007）; 云南省自然科学基金（2018FB092）; NSFC云南联合基金（U1602272）; 省部共建复杂有色金属资源清洁利用国家重点实验室自设项目（CNMRCUTS1704）
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