火焰稳定器滞留时间的测定
MEASUREMENT OF RESIDUAL TIME OF GAS IN RECIRCULATION ZONE BEHIND FLAMEHOLDERS
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摘要: 气团在回流区内的平均滞留时间,对火焰稳定器机理的研究及稳定性能的估算有重要的意义。文献利用光电倍增管及交流放大器测定滞留时间,但计算麻烦,且易产生误差。文献虽谈到滞留时间的测定,但对具体装置都未说明。本文研制了一种测试装置,它能方便可靠地测定燃烧时气团在回流区内的滞留时间,也可用在冷态滞留时间的测定。Abstract: An instrument has been developed which provides sensitive and reliable measurement of the residual time of gas in the recirculation zone behind flameholders with flame. The experiments with this instrument show that the mean residual time is inversely proportional to the upstream velocity.
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