Date post: | 30-Dec-2015 |
Category: |
Documents |
Upload: | felicity-hopkins |
View: | 27 times |
Download: | 0 times |
Indoor aerosol behaviourIndoor aerosol behaviour
Jiří Smolík1, Pavel Moravec1, Jaroslav Schwarz1, Vladimír Ždímal1,
Elin Dahlin2, Yannis Drossinos3, Mita Lapi4 and Mihalis Lazaridis5
1Institute of Chemical Process Fundamentals AS CR, Praha, 2Norwegian Institute for Air Research (NILU), Kjeller, 3European Commission Joint Research Centre, Ispra,
4Fondazione Lombardia per l'Ambiente, Milan, 5Technical University of Crete, Chania
4
InstrumentsInstruments
NanoSMPS: 3 nm - 1 m DMA2 (EC 3085) + UCPC (3025), TSI SMPS: 7 nm - 1 m DMA1 (EC 3071A) + CPC (3022A), TSI APS: 0,7 m – 20 m (0,5 m - 20 m)
model 3320 (3321), TSI
7
100
1000
SMPS: 100nm<GMD<700nm
1000
10000Nano: 3nm<GMD<20nm
0.1
1
8 10 12 14 16time, h
APS: 2.5mkm<AeD<10mkm
8
0 1 2 3 4 5 6
10-1
100
103
104
Fig.1 Temporal evolution of indoor concentrations ofultrafine (3-20 nm) and coarse (2.5-10 µm) particles
Dp 2.5-10 m
Dp 3-20 nm
Outdoor Indoor
con
cen
tra
tion
, #/c
cm
time, h
Institute of Chemical Process FundamentalsAcademy of Sciences of the Czech RepublicRozvojova 2, 165 02 Prague, Czech Republic
Milano 2002
0
20
40
60
80
100
120
140
Date
mic
rog
r/m
3
indoor
outdoor
32
ConclusionsConclusions
Indoor aerosol concentration depends on
• infiltration• deposition • indoor sources
Compared to outdoor aerosol concentrations the indoor concentrations can be
• higher• lower
33
Conclusions - continuationConclusions - continuation
Rate of deposition on internal surfaces is
• higher for ultrafine and coarse particles• lower for the accumulation mode
Model assuming the ideal mixing in the room describes well the behaviour of the indoor aerosol