Grantee Research Project Results
2015 Progress Report: Development of Cost-effective, Compact Electrical Ultrafine Particle (eUFP) Sizers and Wireless eUFP Sensor Network
EPA Grant Number: R835132Title: Development of Cost-effective, Compact Electrical Ultrafine Particle (eUFP) Sizers and Wireless eUFP Sensor Network
Investigators: Chen, Da-Ren , Lu, Chenyang
Institution: Washington University
Current Institution: Washington University , Virginia Commonwealth University
EPA Project Officer: Chung, Serena
Project Period: September 1, 2012 through August 31, 2015 (Extended to August 31, 2016)
Project Period Covered by this Report: September 1, 2014 through August 31,2015
Project Amount: $499,130
RFA: Developing the Next Generation of Air Quality Measurement Technology (2011) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Air
Objective:
Specific objectives of this research project are (i) to develop a cost-effective, portable electrical ultrafine particle (eUFP) sizer, enabling the spatial and temporal monitoring of UFP size distribution in the ambient; (ii) to develop a cost-effective, pocket eUFP sizer for measuring the UFP exposure at the personal level; (iii) to develop a wireless mesh network using proposed portable sizers as the nodes, enabling the monitoring of the working status of deployed sizers and to acquire data being collected via internet; and (iv) to evaluate and validate proposed technologies in planned field testing.
Progress Summary:
Based on the experimental data on prototype mini-plate aerosol charger and mini-plate DMA, the final design of these two key components of mini-eUFP sizer were determined. Detail experiments have been carried out to evaluate the performance of final mini-plate DMAs. The calibration results show its satisfactory performance for particle classification. The first mini-eUFP sizer has been tested in the laboratory setting with TSI-SMPS as the reference. With the developed data inversion scheme, the mini-eUFP sizer is able to provide reasonable size distribution measurement for ultrafine particles. The wireless data transmission function of mini-eUFPS sizers also has been tested. Two new mini-eUFP sizers in the final design are being assembled for field testing. To further reduce the size of mini-eUFP sizer while keeping the satisfactory sizing performance, a novel curved particle electrical classifier was recently invented.
Future Activities:
- Calibration of mini-eUFP sizers
- Assembly of two mini-eUFP sizers
- Testing of wireless sensor network function of mini-eUFP sizers
- Development of mini-eUFP sizers with curved particle electrical mobility classifier
Journal Articles on this Report : 3 Displayed | Download in RIS Format
| Other project views: | All 19 publications | 9 publications in selected types | All 9 journal articles |
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Liu D, Hsiao T-C, Chen D-R. Performance study of a miniature quadru-inlet cyclone. Journal of Aerosol Science 2015;90:161-168. |
R835132 (2015) R835132 (Final) |
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Liu Q, Chen D-R. Experimental evaluation of miniature plate DMAs (mini-plate DMAs) for future ultrafine particle (UFP) sensor network. Aerosol Science and Technology 2016;50(3):297-307. |
R835132 (2015) R835132 (Final) |
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Liu Q, Chen D-R. Performance evaluation of a miniature plate Electrostatic Aerosol Analyzer (mini-plate EAA). Journal of Aerosol Science 2016;95:30-42. |
R835132 (2015) R835132 (Final) |
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Supplemental Keywords:
mini-plate; differential mobility classifier (DMC); aerosol charger; mini-eUFP sizer;Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.