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Original Articles

Measurement of sub-3 nm flame-generated particles using butanol CPCs in boosted conditions

, , , &
Pages 785-794 | Received 19 Oct 2020, Accepted 21 Feb 2021, Published online: 23 Mar 2021

Figures & data

Figure 1. Schematic diagram of the experimental set-up.

Figure 1. Schematic diagram of the experimental set-up.

Table 1. Test plan for the experiments for different particles at different CPC operating conditions.

Figure 2. Number concentration of particles formed by homogeneous nucleation of butanol vapors for different aerosol capillary flow rates as a function of the saturator temperature.

Figure 2. Number concentration of particles formed by homogeneous nucleation of butanol vapors for different aerosol capillary flow rates as a function of the saturator temperature.

Figure 3. Effect of increasing saturator temperature on the measurement of THAB salt ions for butanol CPC in boosted conditions in comparison with an electrometer. Capillary flow rate is kept fixed at 50 sccm.

Figure 3. Effect of increasing saturator temperature on the measurement of THAB salt ions for butanol CPC in boosted conditions in comparison with an electrometer. Capillary flow rate is kept fixed at 50 sccm.

Figure 4. Effect of capillary flow rate on the CPC Detection Efficiency (%) at different saturator temperature for the measurement of THA + ions.

Figure 4. Effect of capillary flow rate on the CPC Detection Efficiency (%) at different saturator temperature for the measurement of THA + ions.

Figure 5. CPC Detection Efficiency (%) for different ammonium alkyl halide salt ions as a function of mobility diameters under three different CPC conditions.

Figure 5. CPC Detection Efficiency (%) for different ammonium alkyl halide salt ions as a function of mobility diameters under three different CPC conditions.

Figure 6. CPC Detection Efficiency (%) for titanium dioxide (TiO2) synthesized using a flame aerosol reactor, and soot particles synthesized using a McKenna burner for both polarities.

Figure 6. CPC Detection Efficiency (%) for titanium dioxide (TiO2) synthesized using a flame aerosol reactor, and soot particles synthesized using a McKenna burner for both polarities.

Figure 7. CPC Detection Efficiency (%) for four different types of positively charged particles/ions (<2 nm) as a function of their mobility diameter. Here, the saturator temperature is 45 °C and aerosol capillary flow rate is 70 sccm.

Figure 7. CPC Detection Efficiency (%) for four different types of positively charged particles/ions (<2 nm) as a function of their mobility diameter. Here, the saturator temperature is 45 °C and aerosol capillary flow rate is 70 sccm.
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