A6.3 - In-situ HT gas sensors: Continuous monitoring of the combustion quality of different wood combustion systems and optimization of combustion process
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- A6 - Gas Sensors III
- H. Kohler, B. Ojha, N. Illyaskutty - Hochschule Karlsruhe (Germany), I. Hartmann, C. Tiel, K. Eisinger - DBFZ Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Leipzig (Germany), M. Dambacher - Sick AG, Waldkirch (Germany)
- 116 - 120
The sensing characteristics and long-term stability of different kinds of CO/HC gas sensors (non-Nernstian mixed potential type) during in-situ operation in the flue gas of different types of low-power combustion systems (wood-log and wood-chips fueled) were investigated. The sensors showed representative but individual sensing behavior with respect to characteristically varying flue gas composition over the combustion process. The long-term sensor signal stability evaluated by repeated exposure to CO/H2/N2/synthetic air mixtures showed no sensitivity loss after operation in the flue gas. Particularly, for one of the sensors (Heraeus) this high signal stability was observed even during continuous operation over four months in the flue gas of a wood-chip firing system (field test). These results demonstrate that those sensors are appropriate for monitoring the combustion quality and implementation of advanced combustion process control.