Title:
Field Particle Emission Measurement on Domestic Wood Firing Systems Retrofitted with Electrostatic Particle Precipitators
Author(s):
Wüest, J., Lohberger, N., Griffin, T., Wildhaber, E.
Document(s):
Paper
Slide presentation
Abstract:
In order to determine the particle collection efficiency of electrostatic precipitators (ESP) installed on the chimney exit of domestic wood burning devices, a new dilution-independent emission measurement method (DIEM) has been developed. The collection efficiency of the precipitator is determined by comparing the standardised particulate matter measured with and without the ESP in operation. The DIEM was validated in the laboratory on a pellet boiler and a log wood room heater, comparing it to standard gravimetric methods with varying relative suction speeds and probe orientation configurations and to a Scanning Mobility Particle Sizer (SMPS). In order to determine the varying dilution-factor and to convert the emissions to the reference O2 of 13%, an accurate CO2 measurement was used. The CO2 standardisation offers a great advantage with respect to measurement uncertainty at the required high dilutions with ambient air. DIEM correlates well with the gravimetric measurement, if the latter aspirates hyperkinetically and is oriented perpendicularly to the exhaust gas flow. Contrary to the conventional gravimetric method, DIEM provides reproducible collection efficiencies of field-mounted ESPs with little effort. In addition, DIEM provides standardised CO emissions, allowing the evaluation of combustion quality and thus, the comparability of the operational phases with and without ESP operation.
Keywords:
wood combustion, particle emission, electrostatic precipitator, particle measurement, separation efficiency
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass and bioliquids combustion for small and medium scale applications
Event:
27th European Biomass Conference and Exhibition
Session:
2AO.2.4
Pages:
426 - 433
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-2AO.2.4
Price:
FREE
