摘要
以功率为100 k W的双P型辐射管为研究对象,利用Fluent软件对其内部的流动、燃烧及传热过程进行模拟,并对比了在有回流和无回流状况下辐射管的气相温度场及壁面温度变化情况,证明在有回流状况下,辐射管内部燃烧状态处于"无焰燃烧"状态。对六种不同空气、烟气喷口排布方式的方案进行了模拟,对比了其燃烧最高温度、烟气温度、管壁温度以及烟气中三原子分子浓度的差异。并以管壁温度和辐射管传热效率为判别依据,得到了较优的布置方案。
By taking a 100 -kilowatt double P radiant tube as research object, the flow, combustion and heat transfer processes were numerically simulated with FLUENT software. Then, the gas -field and wall temperature of these radiant tubes with or without backflow were compared, found that the combustion status of radiant tube with backflow was similar with the ＂flameless combustion＂. In order to get the better arrangement of air/gas nozzle, six plans were carried out. The peak temperature, gas temperature field, wall temperature and the concentration of triatomic molecule in the exhaust gas of six different proposals were compared. A better plan was found by taking the wall temperature and radiant efficiency as distinguish basis
作者
张欣
ZHANG Xin(Beijing Aerospace Petrochemical Technology and Equipment Engineering Co. , Ltd. Beijing 100166, China.)
出处
《应用能源技术》
2018年第4期8-12,共5页
Applied Energy Technology
关键词
双P型辐射管
数值模拟
方案优化
无焰燃烧
Double -p radiant tube
Numerical simulation
Proposal optimization
Flameless combustion
