scholarly journals Development of a micro-dilution tunnel system for in-use, on-board heavy-duty vehicle particulate matter emissions measurement

2001 ◽  
Author(s):  
Emily Deanna Cirillo
Keyword(s):  
Particulate Matter ◽  
Heavy Duty ◽  
Heavy Duty Vehicle ◽  
Particulate Matter Emissions ◽  
Tunnel System

Fuel Quality Effects on Particulate Matter Emissions from Light- and Heavy-Duty Diesel Engines

1994 ◽  
Author(s):  
C. J. J. Den Ouden ◽  
R. H. Clark ◽  
L. T. Cowley ◽  
R. J. Stradling ◽  
W. W. Lange ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Diesel Engines ◽  
Fuel Quality ◽  
Heavy Duty ◽  
Particulate Matter Emissions ◽  
Heavy Duty Diesel

Comparison of reduction efficiency of woven straw for entrained emissions of particulate matter with diameters less than 10 µm (PM10) and less than 2.5 µm (PM2.5) from exposed areas at construction sitesA paper submitted to the Journal of Environmental Engineering and Science.

2010 ◽  
Vol 37 (5) ◽  
pp. 787-795 ◽  
Author(s):  
Kuo-Tung Su ◽  
Yu-Min Chang ◽  
Wei-Hsing Hu ◽  
Shiao-Shing Chen ◽  
Chao-Hsiung Wu ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Engineering Application ◽  
Point Of View ◽  
Construction Sites ◽  
Coverage Ratio ◽  
Average Value ◽  
Wind Speeds ◽  
Particulate Matter Emissions ◽  
Approach Zero ◽  
Tunnel System

From an engineering application point of view in reducing fugitive particulate matter emissions, this paper presents experimental data comparing the efficiency of woven straw at reducing entrained emissions of particulate matter with diameters less than 10 µm (PM10) with that for particulate matter with diameters less than 2.5 µm (PM2.5) at construction sites. A series of field-analogous experiments were carried out to continuously measure PM10 and PM2.5 using laser particle monitors in an artificial wind tunnel system. It was found that the efficiency of woven straw at reducing either PM10 or PM2.5 is significantly dependent on the woven straw coverage ratio. The maximum reduction efficiencies for PM10 and PM2.5 are about 40% and 12%, respectively. Note that the reduction efficiencies approach zero as the coverage ratio is less than about 40%. Total elimination of PM2.5 and PM10 emissions is not possible, even using full-coverage woven straw. Reduction of PM2.5 emissions is less efficient than that of PM10 emissions using woven straw, and this trend is likely more obvious with an increase in the woven straw coverage ratio. The ratio of reduction efficiencies (R) between PM2.5 and PM10 for woven straw decreased slightly with an increase in the woven straw coverage ratio. Overall, for wind speeds of 0.5–3.0 m/s, silt contents of 4.8%–21.0%, and soil moisture contents of 10%–30% as used in this work, the average value of R is 0.31. The effects of wind velocity, silt content, and moisture content on the reduction efficiencies are also discussed.

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