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1. Design and Capabilities of NISTs Scale-Model Smokestack Simulator (SMSS)
Published: 4/17/2015
Authors: Aaron N Johnson, Joey T Boyd, Eric Harman, Mohammad Mohammad Khalil, Jacob E Ricker, Christopher J Crowley, Rodney A Bryant, Iosif I Shinder
Abstract: The amount of CO^d2^ emitted from a coal-fired power plant (CFPP) is measured by continuous emissions monitoring systems (CEMS) permanently installed in the exhaust smokestack. Both the CO^d2^ concentration and the bulk flow are continuously measured ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918343

2. Real Gas Corrections for High Beta Ratio Critical Flow Venturi (CFV) Installations.
Published: 4/17/2015
Authors: Aaron N Johnson, Eric W Lemmon
Abstract: For almost 50 years flow measurement applications using critical flow venturis (CFVs) have relied exclusively on the critical flow function (C*) to correct for viral effects. This work shows that C* does not account for all real gas effects. For high ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918226

3. Thermal Effects on Critical Flow Venturis
Published: 4/14/2015
Authors: John D Wright, Aaron N Johnson, Michael R Moldover, Woong Kang, Liang Zhang
Abstract: Critical flow venturis (CFVs) are widely used as working and transfer standards for gas flow measurement because of their long-term calibration stability (< 0.06 %) and well developed physical model. At Reynolds numbers {I}Re{/I} < 2.5 {multiply} 10^ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917814

4. NIST's Fully Dynamic Gravimetric Liquid Flowmeter Standard.
Published: 4/13/2015
Authors: Jodie G Pope, Aaron N Johnson, Bernard J Filla, Joey T Boyd, Vern E. Bean, Christopher J. Crowley
Abstract: We describe a new dynamic, gravimetric, liquid flow standard (LFS) that determines flow by measuring the rate of change of the liquid mass accumulating in a collection tank. The LFS is a fully- automated,15 kg/s system that uses a proportional‹integ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918213

5. An Uncertainty Analysis of Mean Flow Velocity Measurements Used to Quantify Emissions from Stationary Sources
Published: 5/20/2014
Authors: Rodney A Bryant, Olatunde B. Sanni, Elizabeth F Moore, Matthew F Bundy, Aaron N Johnson
Abstract: Point velocity measurements conducted by traversing a pitot tube across the cross section of a flow conduit continues to be the standard practice for evaluating the accuracy of continuous flow monitoring devices. Such velocity traverses were condu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914663

6. Liquid Piston Prover Uncertainty Analysis Spreadsheet
Series: OTHER
Published: 3/25/2014
Authors: John D Wright, Aaron N Johnson, Jodie G Pope
Abstract: This publication is a spreadsheet that calculates the mass and volume flow uncertainty for a piston prover liquid flow standard based on user inputs of component uncertainties. The calculations use the basis equation and uncertainty analysis presen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915640

7. Liquid Flow Meter Calibrations with the 0.1 L/s and 2.5 L/s Piston Provers
Series: Special Publication (NIST SP)
Report Number: 250-1039r1
Published: 1/15/2014
Authors: Jodie G Pope, John D Wright, Aaron N Johnson, Christopher J. Crowley
Abstract: This document provides a description of the 2.5 L/s and 0.1 L/s liquid flow calibration standards operated by the National Institute of Standards and Technology (NIST) Fluid Metrology Group to provide flow meter calibrations for customers. The 0 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914768

8. Blow-Down Calibration of a Large 8 Path Ultrasonic Flow Meter under Quasi-Steady Flow Conditions
Published: 9/26/2013
Authors: Aaron N Johnson, Eric Harman, Joey T Boyd
Abstract: An array of critical flow venturis (CFVs) was installed in a blow-down facility and used to calibrate a large (i.e., D = 89.5 cm) 8 path ultrasonic flow meter (USM) at atmospheric pressure. The calibration was performed in dry air over a flow range ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914473

9. Greenhouse Gas Emissions and Dispersion #2. Comparison of FDS Predictions with Gas Velocity Measurements in the Exhaust Duct of a Stationary Source
Series: Special Publication (NIST SP)
Report Number: 1159
Published: 4/25/2013
Authors: Kuldeep R Prasad, Kevin Li, Elizabeth F Moore, Rodney A Bryant, Aaron N Johnson, James R Whetstone
Abstract: The burning of fossil fuels remains a major source of greenhouse gases responsible for global warming and climate change. In order to reduce greenhouse gas emissions, it is imperative to develop a capability to accurately measure these emission ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912448

10. Computational Fluid Dynamic (CFD) Investigation of NIST‰s Scale Model Smokestack Simulator
Published: 3/27/2013
Authors: Aaron N Johnson, Jacob E Ricker, Joey T Boyd
Abstract: Accurate flow measurements are essential to quantifying the amount of greenhouse gases (GHGs) and other pollutants emitted from the smokestacks of coal-fired power plants (CFPPs). However, flow measurement accuracy is limited by the adverse flow con ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913525



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