推进技术 ›› 2018, Vol. 39 ›› Issue (7): 1660-1666.

• 材料 推进剂 燃料 • 上一篇    下一篇

超临界压力下乳化煤油比定压热容测量 *

贺宇锋1,郭亚军1,冯松2,毕勤成2   

  1. 西安建筑科技大学环境与市政工程学院,陕西西安 710055,西安建筑科技大学环境与市政工程学院,陕西西安 710055,西安交通大学动力工程多相流国家重点实验室,陕西西安 710049,西安交通大学动力工程多相流国家重点实验室,陕西西安 710049
  • 发布日期:2021-08-15
  • 作者简介:贺宇锋,男,硕士生,研究领域为超临界条件下吸热型碳氢燃料热物理性质。 E-mail: 924134163@qq.com 通讯作者:郭亚军,女,博士,副教授,研究领域为新型环保节能换热器研发、蒸汽发生器相变传热研究。
  • 基金资助:
    青年科学基金项目( 21306147);国家博士后科学基金项目( 2013M532044)。

Measurementof Isobaric Specific Heatof Emulsified Keroseneat Supercritical Pressure

  1. School of Environmental and Municipal Engineering,Xi’an University of Architecture & Technology, Xi’an 710055,China,School of Environmental and Municipal Engineering,Xi’an University of Architecture & Technology, Xi’an 710055,China,State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China and State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China
  • Published:2021-08-15

摘要: 为了准确测量高温高压下乳化煤油的比定压热容,基于能量守恒的量热计理论,搭建了一套流动型比定压热容在线测量系统。系统温度测量范围为 301~900K,测量压力可达 10MPa。通过去离子水和质量比 1:1正辛烷-正庚烷混合物对测量系统进行标定,实验结果与文献值进行比较,最大相对误差小于 ±1%,相对误差绝对平均值在 0.46%以内。在此基础上,对含水质量分数为 10%,20%,30%, 50%的四种乳化煤油比定压热容进行测量,温度为 301~880K,压力为 3MPa。实验结果与航空煤油 RP-3进行对比,结果表明:相同工况下,乳化煤油比定压热容较大,吸热能力更强,冷却壁温效果更好。该系统的搭建为进一步研究乳化碳氢燃料比定压热容创造了条件。

关键词: 超临界压力;乳化煤油;定压比热容;在线测量

Abstract: A set of constant pressure heat capacity on-line measurement system based on the energy conser.vation calorimeter theory is established in order to accurately measure the specific heat capacity of emulsified ker.osene at high temperature and pressure,which temperature covering from 301 to 900K and pressures up t 10MPa. The deionized water and the binary mixtures of n-octane and n-heptane with a mass ratio of 1:1 were measured for the calibration of the measurement system. Compared with the literature values,the experimental re.sults show that the maximum relative deviations were below ±1% and the absolute average relative deviations were within 0.46%. The isobaric specific heat capacity of emulsified kerosene with water content fraction of 10%, 20%,30% and 50% were measured at the temperatures from 301 to 880K and the pressure of 3MPa. Compared with those of aviation kerosene RP-3,the experimental results show that the isobaric specific heat capacity of emulsified kerosene is larger and the heat capacity is stronger and the effect of cooling wall temperature is better.The construction of the system creates the conditions to further study isobaric specific heat capacity of the emulsi.fied hydrocarbon fuel.

Key words: Supercritical pressure;Emulsified fuel;Specific heat capacity;On-line measurement