苯高温高压下流体密度的在线测量

推进技术 ›› 2015, Vol. 36 ›› Issue (9): 1403-1409.

苯高温高压下流体密度的在线测量

文旭¹,周灏¹,高新科¹,朱权²,王健礼³,李象远¹

四川大学化学与工程学院，四川成都 610065,四川大学化学与工程学院，四川成都 610065,四川大学化学与工程学院，四川成都 610065,四川大学空天科学工程学院，四川成都 610065,四川大学化学学院，四川成都 610065,四川大学化学与工程学院，四川成都 610065

发布日期:2021-08-15
作者简介:文旭(1989—)，男，硕士生，研究领域为燃料热物性测量。E-mail: qzhu@scu.edu.cn 通讯作者:朱　权(1980—)，男，副教授，研究领域为燃烧化学。
基金资助:
国家自然科学项目(20903067)；四川大学优秀青年学者科研基金(2013SCU04A05)；教育部新世纪优秀人才支持计划(NCET-13-0398)。

Online Density Measurements of Benzene under

Chemical and Engineering College，Sichuan?University，Chengdu 610065，China,Chemical and Engineering College，Sichuan?University，Chengdu 610065，China,Chemical and Engineering College，Sichuan?University，Chengdu 610065，China,Space Science and Engineering College，Sichuan?University，Chengdu 610065，China,Chemistry College，Sichuan?University，Chengdu 610065，China and Chemical and Engineering College，Sichuan?University，Chengdu 610065，China

Published:2021-08-15

摘要/Abstract

摘要： 根据流动连续性方程和伯努利方程，建立了一种流体高温密度和气相压缩因子测量新方法。通过测量流体冷态质量流量和节流孔板前后压差，实现了流体密度的在线测量。根据仪器精度，得出密度测量不确定度为±2.84%，苯的测量值与Supertrapp软件获得的参考密度之间的偏差为-1%～4%。通过压力5MPa下的三次平行实验，得出该方法测量苯密度的最大偏差为±0.7%；实验测量了不同温度(338～982K)和不同压力(1～5MPa)下苯的密度，同时计算得到气相压缩因子。实验结果表明:本方法可实现高温高压下流体密度在线测量，具有很好的准确性和重复性。

关键词: 苯；密度；在线测量；高温高压；压缩因子

Abstract: Based on the fluid continuity equation and Bernoulli's equation，the online density and compression factor(gas phase) of hydrocarbon fuel can be achieved by measuring the mass flow under cold state and the differential pressure of orifice plates. The uncertainty of the method is ± 2.84% through analyzing the deviation of each measuring instrument，and the measured deviation is within -1%～4% by comparing the experimental densities of benzene with those from Supertrapp software. The precision of this method is ± 0.7% through three parallel experiments for benzene under 5MPa. The density of benzene was measured in the temperature range of 338～982K and pressure range of 1～5MPa，at the same time，the compression factor of gas phase was calculated. It is indicated that this measurement method can achieve the online density of the fuel with a high accuracy and repeatability under high temperature and pressure.

Key words: Benzene；Density；Online measurement；High temperature and pressure；Compression factor

文旭,周灏,高新科,朱权,王健礼,李象远. 苯高温高压下流体密度的在线测量[J]. 推进技术, 2015, 36(9): 1403-1409.

WEN Xu¹,ZHOU Hao¹,GAO Xin-ke¹,ZHU Quan²,WANG Jian-li³,LI Xiang-yuan¹. Online Density Measurements of Benzene under[J]. Journal of Propulsion Technology, 2015, 36(9): 1403-1409.

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