碳氢燃料变压力过程中传热研究

推进技术 ›› 2014, Vol. 35 ›› Issue (7): 965-972.

碳氢燃料变压力过程中传热研究

姜　蕾¹,刘朝晖¹,毕勤成¹,刘忠轩²,颜建国¹

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;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;国电科学技术研究院，江苏南京 210000;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:姜　蕾(1989—)，男，博士生，研究领域为热能工程多相流。
基金资助:
中国博士后基金(2013M532044)；青年科学基金(21306147)；中央高校基本科研业务费专项基金。

Heat Transfer of Hydrocarbon Fuel During Transient Pressure

State Key Laboratory of Multiphase Flow in Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China;State Key Laboratory of Multiphase Flow in Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China;State Key Laboratory of Multiphase Flow in Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China;Guodian Science and Technology Research Institute，Nanjing 210000，China;State Key Laboratory of Multiphase Flow in Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China

Published:2021-08-15

摘要/Abstract

摘要： 碳氢燃料广泛应用于再生冷却技术中，为了研究其在不同压力下和压力变化过程中的传热规律，使用内径1mm圆管进行了变压力过程实验。试验参数:冷态流量1g/s，流体出口温度500℃，压力1～4MPa。在不同压力稳态的传热试验中发现了两种类型的传热恶化:亚临界下的膜态沸腾和超临界时的入口层流化。研究了变压力时的传热特性，重点分析了不同换热区域的外壁温动态变化，发现了变压力过程中的壁温非单调特性，在超临界压力下动态变化时的传热弱于稳态的传热。实验中还研究了三种不同升压速率对换热的影响，结果显示压力变化速率对传热影响不大。

关键词: 碳氢燃料；压力；传热；动态特性

Abstract: Hydrocarbon fuel is widely used in the regenerative cooling technology. To investigate heat transfer characteristics of the fuel at different pressure and during transient pressure，a mini circular tube with 1mm inner diameter was employed to conduct pressure changing experiments. Mass flow rate was 1g/s，outlet fluid temperature was 500℃，and pressure was changed from 1 to 4MPa. Firstly，heat transfer under different steady states was studied. Results show that two kinds of heat transfer deterioration appear: film boiling happens at subcritical pressure and inlet flow laminarization occurs at supercritical pressure. Then the dynamic changes of outside wall temperature in different heat transfer regions during transient pressure was analyzed. Results indicate that wall temperature does not change monotonically and heat transfer is worse than that under steady states at supercritical pressure. Pressure transients at three different rates were also carried out，there are neglectable effects on the variations of outside wall temperature.

Key words: Hydrocarbon fuel；Pressure；Heat transfer；Dynamic characteristics

姜　蕾,刘朝晖,毕勤成,刘忠轩,颜建国. 碳氢燃料变压力过程中传热研究[J]. 推进技术, 2014, 35(7): 965-972.

JIANG Lei¹,LIU Zhao-hui¹,BI Qin-cheng¹,LIU Zhong-xuan²,YAN Jian-guo¹. Heat Transfer of Hydrocarbon Fuel During Transient Pressure[J]. Journal of Propulsion Technology, 2014, 35(7): 965-972.

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