摘要
作者提出采用正交射流燃烧器来代替钝体燃烧器,从而避免了钝体燃烧器的磨损和烧坏问题.经冷态空气动力学试验证明,交叉射流的足迹有一个明显的负压区存在,随着交叉射流速度比的增加.回流区的宽度、长度和质量回流率是增加的,射流的穿透深度也是增加的,它们对煤粉燃烧过程的稳定和强化起了有利的作用.在试验的基础上,归纳了有限空间内正交射流的流动规律和燃烧器的设计方法.
The authors suggest that orthogonal jet type flame stabilizers be used to replace baffle flame holders in order to evade the latters susceptibility to errosion and burn-out damage. Cold state aerodynamic tests show that in the wakes of intersection jets there exists an obvious negative pressure zone. The width, length and mass rate of the back flow zone as well as the penetrative depth of the jet flow increase with increasing jetvelocity ratio. This has a beneficial effect on the stabilization and intersification of the combustion process. Based on these tests, laws that govern the flow of orthogonal crossing jets in a limited space and a design methodology of burners are deduced. Figs 14, tables 5 and refs 4.
出处
《动力工程》
CSCD
1992年第3期24-30,共7页
Power Engineering
基金
国家自然科学基金资助项目
湖北省科委自然科学基金资助项目
