Emissions Control in Swirl-Stabilized Combustors
Abstract
The Stanford University portion of this collaborative project has four major goals: 1) develop real-time tunable-diode-laser (TDL)-based sensors for combustion control, 2) demonstrate the use of these sensors to measure temperature in liquid-fueled swirl- stabilized flames at the University of Cincinnati, 3) fabricate a swirl-stabilized gas and liquid fuel burner with optical access to enable diagnostic development that mimics the atmospheric pressure performance of the University of Cincinnati facility, and 4) demonstrate the use of the TDL sensor for combustion control in this burner. Early in the project, we designed, fabricated, and tested a first generation TDL temperature sensor using water vapor absorption near 1.8 micrometers. After testing the sensor in well-controlled heated-cell and in stable laminar flames at Stanford University, this first generation temperature sensor was used for measurements a practical swirl-stabilized burner at the University of Cincinnati. The plus or minus 20K accuracy at 500Hz illustrated the potential for TDL laser temperature sensing for combustion control. The time-resolved (500Hz) measurements of gas temperature obtained were the first use of TDL temperature sensing in a liquid-fueled combustor. These measurements also demonstrated the ability to monitor temperature fluctuations in a forced flame and illustrated the potential to identify% of combustion instabilities using a fast Fourier transform (FFT) of time-resolved temperature measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2006
- Accession Number
- ADA463573
Entities
People
- Ronald Kenneth Hanson
Organizations
- Stanford University