Abstract
A method has been developed for the application of laser sheet visualization to power station flames. The speciality of the method is that the laser light sheet is photographed under a very small angle. The camera is positioned close to the sheet generating cylindrical lens and looks through the same opening as the one through which the laser sheet is introduced. With camera and optics built into a unit that is small enough to enter the burner centre tubes of power station burners, the method is applicable to all flames in a multi-burner furnace. The method has been tested on oil and coal flames in an experimental furnace and on two 36 MW power station pulverized coal flames. For both laboratory and power station flames, different flame types have given clearly different pictures and even for the very dense power station low-NO, flame, it has been possible to distinguish regions with a diminished coal concentration around the periphery of the burner. This indicates that problems related to such variations or to variations between burners in a furnace might be traced with this technique.
| Original language | English |
|---|---|
| Journal | Measurement Science and Technology |
| Volume | 6 |
| Pages (from-to) | 815-825 |
| ISSN | 0957-0233 |
| DOIs | |
| Publication status | Published - 1995 |