摘要
开发了一种新型的双色法火焰监测分析系统,并在一台燃气试验炉上对部分预混的甲烷-空气燃烧火焰进行了温度场的空间实时无干扰的测定演示。在线测量结果表明:当提供的空气量保持不变时,随着甲烷流量的增加,甲烷燃烧速度加快,火焰监测系统所测定的火焰温度升高。当甲烷流量保持不变,风速开始增加时,火焰温度先升高,随后略有降低。这一方面由于增加的空气带走了大量的热量,同时,火焰中烟灰颗粒浓度的不足,会引起所测火焰温度的降低。
A new type of two-color flame monitoring system is developed, and real-time, non-disturbed, spatial tests are performed on a partially premixed methane-air combustor of a gas-fired testing furnace. The on-line flame temperature distribution results show that when air flow rate is kept constant, an increase of CH4 flow rate would enhance the combustion speed and elevate the flame temperature measured by the monitoring system. While under constant CH4 flow rate, the increase of air flow rate would lead the measured flame temperature to increase at the beginning and slow down afterwards. That is because of increase of heat loss associated with the increase of air supply, besides the reduction of particles in the flame is another reason for the temperature reduction.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第12期133-137,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50076045)~~
