Title:
Optimization of Wood Combustion in Low-power Firing Systems by Sensor-based Operation: High Temperature CO/HC Sensor for Long-term In-situ Operation
Author(s):
Kohler, H., Ojha, B., Zhang, X.
Document(s):
Paper
Abstract:
Effective reduction of the emissions of low-power wood-log fueled firing appliances is only possible, if advanced combustion air stream control concepts are applied. Such an advanced method of automated estimation and control of combustion air streams is based on combustion temperature, residual oxygen concentration and content of the un-/partly combusted exhaust gas components and separate control loops for adjustment of the combustion air streams using air mass stream sensors and motor driven air stream limiting shutters. In the past lack of appropriate CO/HC gas sensors providing satisfying long-term signal stability hindered the effectuation of those control systems in the market of advanced firing systems. In this paper an electrochemical method is reported, which may solve the problem. It enables checking of the current status of CO/HC gas sensitivity of a commercial mixed potential type gas sensor and, if required, regeneration of sensitivity at the place of operation under ambient air conditions.
Keywords:
combustion, control systems, emissions, thermochemical conversion, monitoring, gas sensor
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass and bioliquids combustion for small and medium scale applications
Event:
26th European Biomass Conference and Exhibition
Session:
2AO.5.5
Pages:
428 - 429
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2AO.5.5
Price:
FREE
