1. Particle Emissions from wood combustion (Concentration in Raw and Diluted Flue Gas)
Nezam Azizaddini
Weigang Lin
Jytte B. Illerup
Yifan Lu
Technical University of Denmark (DTU)
Kgs. Lyngby, Denmark

2. Contents Introduction Test set-up Particle concentration Standards
Techniques and instruments

3. Wood combustion
Small-scale residential wood stoves!

4. Introduction Residential wood stove (HWAM 3400)
Chimney, dilution tunnel,… (NS )
Particle emissions NS
SMPS
ELPI
HT-ELPI
Scanning mobility particle sizer
Electrical Low Pressure Impactor

5. Particle emissions Particle number concentration
Particle mass concentration
Ref: Lars Gunnarsen, Statens Byggeforskningsinstitut, Aalborg University
Wood smoke
Agglomerates
Importance of PNC increseas significantly for d<100nm

6. SEM - TEM Scanning Electron Microscopy Transmition Electron Microscopy
Transmitting electron microscopy

7. NS :1994
Particle mass emission

8. SMPS Scanning mobility particle sizer
Electrostatic classifier (DMA 3080)
CPC 3775
Down to 4 nm
Up to 107 #/cm3

9. ELPI+ Electrical Low Pressure Impactor 14 impactor stages

10. ELPI+ 6 nm to 10 µm Measurement options:
Real-time particle concentration
Gravimetric measurements
Particle charge distribution
AL substrate: 25 mm
Impacator: 14 stages
13 impactor plates, 1 filter

11. HT ELPI+ High temperature ELPI Direct sampling of raw flue gas

12. HT ELPI+ High temperature diluter Air heater up to 200 °C
Flue gas temperature: degC
HT ELPI+
- operating temp: degC
- sampling flow rate: 10 lpm

13. Thanks for your attention!
Nezam Azizaddini
DTU Chemical Engineering
CHEC Research Centre
Lyngby, Denmark