Record Display for the EPA National Library Catalog


Main Title Development of a Source PM10 Sampling Train Using Emission Gas Recycle (EGR).
Author Williamson, A. D. ; Martin, R. S. ; Ward, T. E. ;
CORP Author Southern Research Inst., Birmingham, AL.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA-68-002-3696; EPA/600/D-85/090;
Stock Number PB85-198109
Additional Subjects Particle size ; Samplers ; Air pollution ; Particle density(Concentration) ; Mass ; Design criteria ; Performance evaluation ; Chimneys ; Combustion products ; Industrial wastes ; Comparison ; Air pollution sampling ; Emission factors ; Emission gas recycle ; Coal fired power plants
Library Call Number Additional Info Location Last
NTIS  PB85-198109 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
Measurement of accurate particulate emission factors in ducted sources with particle size segregation involves a compromise between two conflicting requirements. In order to avoid anisokinetic sampling bias over a duct traverse, the flow rate of gas entering the sampling nozzle must vary with the local duct velocity. However, to maintain constant cuts in an inertial particle sizing device, the flow rate through the device must remain constant. Furthermore, if a specific size cut (such as ten micrometers) is specified, the flow rate of the sampler is fixed by the stack gas temperature and composition. A sampling train has been constructed which introduces an adjustable amount of clean, reheated, recycled stack gas between the sampling nozzle and the inertial sizing device. The EGR train was tested at three coal-fired utility boilers using inertial samplers without recycle gas and EPA Method 17 trains for reference measurements.