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首页> 外文会议>ASME Gas Turbine India Conference >THERMODYNAMIC ANALYSIS OF EVAPORATION CHARACTERISTICS OF MOVING TWO-COMPONENT LIQUID FUEL DROPLETS IN PRE- VAPORIZER SYSTEMS
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THERMODYNAMIC ANALYSIS OF EVAPORATION CHARACTERISTICS OF MOVING TWO-COMPONENT LIQUID FUEL DROPLETS IN PRE- VAPORIZER SYSTEMS

机译：蒸发器系统中移动双组分液体燃料液滴蒸发特性的热力学分析

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摘要

In the current study, a thermodynamic model is presented for predicting the vaporization characteristics of moving two-component fuel droplets, at an ambient temperature of 350 K, atmospheric pressure and with an initial droplet diameter of 100 microns, as typically observed in a gas turbine pre-vaporizing system. Liquid fuels considered are iso-octane (surrogate of gasoline) and decane (surrogate of diesel), blended with ethanol and methyl-butyrate (surrogate of biodiesel), respectively. The model evaluates the vapor-liquid equilibrium based on activity coefficients calculated using UNIFAC group contribution method. The gas-phase properties are calculated as functions of temperature and mixture molecular weight. The temporally varying parameters such as equilibrium surface temperature, concentration of the higher volatile fuel component, evaporation constant and droplet Reynolds and Nusselt numbers have been studied. Variation of integrated parameters such as time-average evaporation constant, droplet lifetime, average velocity and the final droplet penetration distance are also discussed.
机译：在目前的研究中，热力学模型提出了一种用于预测移动双组分的燃料液滴的汽化特性，在350 K的环境温度，大气压力，并用100微米的初始液滴直径，如在燃气涡轮机典型地观察到预蒸发系统。考虑液体燃料是异辛烷（汽油的替代品）和癸烷（柴油的替代物），混纺用乙醇和甲基丁酸（生物柴油的替代物），分别。该模型基于使用UNIFAC基团贡献法计算活度系数评估气 - 液平衡。气相性质计算温度和混合物分子量的功能。所述时间变化参数如平衡表面温度，较高的挥发性燃料组分，蒸发恒定的浓度和液滴Reynolds和努塞尔数进行了研究。综合参数，如时间平均蒸发恒定，液滴寿命，平均速度和最终微滴穿透距离变化进行了讨论。

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