Two series of independent flow measurements were conducted for cross validation of flow velocity in the exhaust duct of the NIST Large Fire Laboratory. In the first series, two pressure measurement probe types, an S probe and a 3-D probe, were used to perform velocity profiling across two chords of the exhaust duct. Several detailed velocity profiles were generated using a probe traverse spacing of 2.54 cm (1.0 in). CFD simulations showed good qualitative agreement for cold flow conditions. The second series of measurements used two S probes, one on each chord, and a minimum of 20 EPA Method 1 traverse positions per chord. Qualitative comparisons of the velocity profiles showed that the flow profiles at the sampling plane were sensitive to run conditions such as flow inlet location, flow magnitude, and heat content of the flow.
Proceedings Title: Proceedings: Continuous Emissions Monitoring User Group Conference & Exhibit 2011
Conference Dates: June 8-10, 2011
Conference Location: Chicago, IL
Conference Title: Continuous Emissions Monitoring User Group Conference & Exhibit 2011
Pub Type: Conferences
flow measurement, CFD, emissions monitoring