周俊虎,周靖松,杨卫娟,王业峰,张彦威,岑可法.平板式微燃烧器内二甲醚催化燃烧与动态火焰研究[J].农业机械学报,2016,47(11):358-362.
Zhou Junhu,Zhou Jingsong,Yang Weijuan,Wang Yefeng,Zhang Yanwei,Cen Kefa.Catalytic Combustion and Dynamic Flame of Dimethyl Ether in Quartz Microchannels[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(11):358-362.
摘要点击次数: 658
全文下载次数: 334
平板式微燃烧器内二甲醚催化燃烧与动态火焰研究   [下载全文]
Catalytic Combustion and Dynamic Flame of Dimethyl Ether in Quartz Microchannels   [Download Pdf][in English]
投稿时间:2016-05-26  
DOI:10.6041/j.issn.1000-1298.2016.11.048
中文关键词:  微尺度燃烧  催化燃烧  动态火焰  二甲醚
基金项目:国家自然科学基金项目(51336010)和中央高校基本科研业务费专项资金项目(2016FZA4011)
作者单位
周俊虎 浙江大学 
周靖松 浙江大学 
杨卫娟 浙江大学 
王业峰 浙江大学 
张彦威 浙江大学 
岑可法 浙江大学 
中文摘要:微型燃烧器是微动力系统的核心,在微型平板燃烧器内进行了二甲醚/空气铂催化燃烧实验,主要研究了燃烧性能和动态火焰,包括稳燃范围、火焰特征、壁面温度、产物含量变化等。实验结果表明,在微型平板燃烧器内,添加石英棉后稳燃范围明显高于未加石英棉的情况。未添加石英棉时,当量比Φ为1.2~1.4时,可以让火焰驻定;Φ>1.4时,会产生振荡火焰,振荡过程可分为3个阶段;Φ<1.2时,无火焰产生。添加石英棉后,火焰驻定在石英棉处,随着流速的增加,火焰高度增加,壁温分布沿壁面中心线呈对称分布。壁面温度随流速增加而增加,温度峰值向出口处移动。尾气中CO2体积分数在Φ=1时达最大值13.44%,在富燃情况下,产物中存在CO和H2,且随当量比增加,二者含量增加。
Zhou Junhu  Zhou Jingsong  Yang Weijuan  Wang Yefeng  Zhang Yanwei  Cen Kefa
Zhejiang University,Zhejiang University,Zhejiang University,Zhejiang University,Zhejiang University and Zhejiang University
Key Words:microscale combustion  catalytic combustion  dynamic flame  dimethyl ether
Abstract:The microscale combustor is an important part of microscale power system. Experiments on dimethyl ether/air catalytic combustion were carried out in quartz microchannels. The experiments mainly focused on the catalytic combustion and dynamic flame such as the effects of equivalence ratio Φ and inlet flow rate V on the stable combustion range, flame feature, wall temperature and the mole fraction of the exhaust gas. The experimental results showed that the stable combustion range was significantly higher after adding quartz wool in the combustors. When there was no quartz wool, the flame could be stable only under the condition of that the Φ varied from 1.2 to 1.4, and the flame was asymmetric. If Φ>1.4, the flame would oscillate and the oscillation cycle could be divided into three main stages; when Φ<1.2, there was no flame. Flame stationed at the quartz wool after adding quartz wool and the height of the flame was increased with the increase of V. The wall temperature distribution along the centerline of the wall was symmetrical and it was increased with the increase of V. Simultaneously, the location of the peak temperature was moved to the outlet of the combustor with the increase of V. The mole fraction of CO2 of the exhaust gas was first increased and then decreased with an increasing equivalence ratio Φ, and reached a maximum value 13.44% when Φ=1. The mole fractions of CO and H2 of the exhaust gas were increased with the increase of equivalence ratio Φ. When Φ<1, there was little CO and H2 in the exhaust gas. In contrast, some CO and H2 existed in the exhaust gas under the rich fuel conditions.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器