Flow metrology & rheology

News and Updates

Making Smokestack Emissions Tests Better, Faster, Cheaper

February 27, 2018

Smokestacks at coal-fired power plants have sensors that continuously monitor their emissions by measuring the flow of...

A Stopwatch for Nanofluids: NIST Files Provisional Patent for Measuring Nanoliter Flow Rates

January 17, 2018

The National Institute of Standards and Technology (NIST) has filed a provisional patent application for a microflow...

In Natural Gas Pipelines, NIST Goes with the Flow

April 19, 2013

On an ordinary day, the United States consumes about 70 billion cubic feet of natural gas – enough to fill a space a...

Microreactors: Small Scale Chemistry Could Lead to Big Improvements for Biodegradable Polymers

March 30, 2011

Using a small block of aluminum with a tiny groove carved in it, a team of researchers from the National Institute of...

Publications

Progress Towards Accurate Monitoring of Flue Gas Emissions

May 17, 2018

Author(s):

Aaron N. Johnson, Iosif I. Shinder, Michael R. Moldover, Joey T. Boyd, Bernard J. Filla

The amounts of CO2 and other pollutants emitted by a coal-fired power plant are measured using a continuous emissions monitoring system (CEMS) permanently...

Characterization of Five-Hole Probes used for Flow Measurement in Stack Emission Testing

May 17, 2018

Author(s):

Iosif I. Shinder, Aaron N. Johnson, Michael R. Moldover, Bernard J. Filla, Vladimir Khromchenko

We report progress towards the goal of reducing the errors in industrial smokestack flow measurements to 1 % by replacing S-probes with calibrated 3-D probes (...

Characterizing Gas-Collection Volumes with Acoustic and Microwave Resonances

March 28, 2018

Author(s):

Jodie G. Pope, Keith A. Gillis, Michael R. Moldover, J B. Mehl

We characterized a 1.8 m3, nearly-spherical, steel shell at pressures up to 7 MPa for use as a gas flow standard. For pressure, volume, temperature, and time...

Wide-ranging Absolute Viscosity Measurements of Sub- and Supercritical 1,1,1-trifluoroethane (R143a)

December 19, 2017

Author(s):

Arno R. Laesecke, Karsten Meier, Richard F. Hafer

The viscosity of 1,1,1-trifluoroethane (R143a) was measured with a piezoelectrically actuated, torsionally vibrating quartz sensor. The measurements extended...

Projects & Programs

COMPLETED: Polymer Formulations

Our goal is to develop combinatorial and high-throughput measurement approaches for rapid characterization of the structure and phase behavior of...

Atomic Standard for Pressure

NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical properties of helium...

Understanding Flow Meters

Accurate flow measurements are needed for test fluids, temperatures, pressures, flows, and installation conditions that differ from those used during NIST's...

Smoke Stack Simulator

Today, inconsistencies between measured CO2 emissions and emissions calculated from coal consumption are on the order of 10% to 20%. The objective of this...

Flow metrology & rheology

News and Updates

Making Smokestack Emissions Tests Better, Faster, Cheaper

A Stopwatch for Nanofluids: NIST Files Provisional Patent for Measuring Nanoliter Flow Rates

In Natural Gas Pipelines, NIST Goes with the Flow

Microreactors: Small Scale Chemistry Could Lead to Big Improvements for Biodegradable Polymers

Publications

Progress Towards Accurate Monitoring of Flue Gas Emissions

Characterization of Five-Hole Probes used for Flow Measurement in Stack Emission Testing

Characterizing Gas-Collection Volumes with Acoustic and Microwave Resonances

Wide-ranging Absolute Viscosity Measurements of Sub- and Supercritical 1,1,1-trifluoroethane (R143a)

Projects & Programs

COMPLETED: Polymer Formulations

Atomic Standard for Pressure

Understanding Flow Meters

Smoke Stack Simulator

Tools & Instruments

Gravimetric Standard for Liquid Micro-Flow

Liquid Flow Standards

Liquid Density

Wind Tunnel