三种脂肪酸甲酯音速测量与相关热物理性质推算

doi:10.11949/j.issn.0438-1157.20161029

化工学报 ›› 2016, Vol. 67 ›› Issue (12): 4922-4928.DOI: 10.11949/j.issn.0438-1157.20161029

三种脂肪酸甲酯音速测量与相关热物理性质推算

何茂刚, 郑雄, 张颖, 陈玉田, 何欣欣

西安交通大学热流科学与工程教育部重点实验室, 陕西西安 710049

收稿日期:2016-07-22 修回日期:2016-08-24 出版日期:2016-12-05 发布日期:2016-12-05
通讯作者: 何茂刚(1970-),男,教授。mghe@mail.xjtu.edu.cn
基金资助:
国家杰出青年科学基金项目（51525604）。

Measurement of sound speed and derived properties of three FAMEs

HE Maogang, ZHENG Xiong, ZHANG Ying, CHEN Yutian, HE Xinxin

Key Laboratory of Thermal-Fluid Science and Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China

Received:2016-07-22 Revised:2016-08-24 Online:2016-12-05 Published:2016-12-05
Supported by:
supported by the National Science Fund for Distinguished Young Scholars of China(51525604).

摘要/Abstract

摘要：

脂肪酸甲酯（FAMEs）是生物燃料的重要成分，为了获取它们的热物理性质数据，利用布里渊散射法测量了3种脂肪酸甲酯常压下的音速，测量温度范围为293.15~423.15 K（己酸甲酯）、293.15~443.15 K（庚酸甲酯）、463.15 K（辛酸甲酯）。为方便工程应用，将文献数据和本文实验数据拟合成温度的关联式，实验值与关联式计算值的相对偏差绝对平均值为：0.29%（己酸甲酯）、0.24%（庚酸甲酯）、0.27%（辛酸甲酯）。应用音速实验数据，分别结合Wada模型和Auerbach模型估算3种脂肪酸甲酯的密度和表面张力。结果表明，Wada模型可以很好地用来估算密度，而Auerbach模型对表面张力的估算结果与文献值偏差较大。

关键词: 生物柴油, 热力学性质, 测量, 模型

Abstract:

Fatty acid methyl esters(FAMEs) are the main components of biodiesels. In order to obtain their thermophysical properties data, the sound speeds of three FAMEs were measured using Brillouin light scattering method(BLS) at the temperature from 293.15 to 463.15 K and pressure of 0.1 MPa. The correlations for the sound speed of FAMEs in literature and this paper were also fitted as the function of temperature to satisfy the usage in engineering areas. The AADs were 0.29% for methyl caproate, 0.24% for methyl heptanoate and 0.27% for methyl caprylate, respectively. And the experimental data were also used to predict the density and the surface tension by Wada's model and Auerbach's model, respectively. It showed that the predictive ability of Wada's model for the density was good, while Auerbach's model did not perform well in the prediction of the surface tension.

Key words: biodiesel, thermodynamic properties, measurement, model

中图分类号:

何茂刚, 郑雄, 张颖, 陈玉田, 何欣欣. 三种脂肪酸甲酯音速测量与相关热物理性质推算[J]. 化工学报, 2016, 67(12): 4922-4928.

HE Maogang, ZHENG Xiong, ZHANG Ying, CHEN Yutian, HE Xinxin. Measurement of sound speed and derived properties of three FAMEs[J]. CIESC Journal, 2016, 67(12): 4922-4928.

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三种脂肪酸甲酯音速测量与相关热物理性质推算

Measurement of sound speed and derived properties of three FAMEs

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