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Chemical Engineering & Processing Programs & Projects

(showing 1 - 15 of 37)
Johnson Noise Thermometry
Last Updated Date: 08/31/2015

Johnson noise thermometry (JNT) is a primary temperature measurement technique based on the fundamental properties of thermal fluctuations in … more

Humidity
Last Updated Date: 08/31/2015

The NIST Thermodynamic Metrology Group maintains and develops national standards of humidity (in the range 1 nmol/mol to 0.6 mol/mol of water … more

Thermometry
Last Updated Date: 08/31/2015

The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports … more

Acoustic Thermometry
Last Updated Date: 08/31/2015

By measuring the speed of sound in argon gas, we have determined thermodynamic temperature with unprecedented accuracy in the range 0 °C to 552 … more

Atomic Standard for Pressure
Last Updated Date: 08/28/2015

NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical … more

Hybrid Humidity Generator
Last Updated Date: 08/28/2015

NIST's new primary standard humidity generator, the Hybrid Humidity Generator (HHG), replaces the NIST 2-Pressure Humidity Generator, Mark 2 … more

Affect of Partial Charge Calculation Method on Adsorption Thermodynamics
Last Updated Date: 08/11/2015

In classical molecular simulations, electrostatic contributions to the potential energy are typically accounted for by assigning partial charges … more

Far-infrared Spectroscopy of Biomolecules
Last Updated Date: 08/10/2015

Far-infrared (or terahertz/THz, ca. 25 to 300 micron wavelength) femtosecond pulsed laser and Fourier-transform infrared methods are employed to … more

In Situ Characterization of Nanoscale Gas-Solid Interactions by TEM
Last Updated Date: 07/24/2015

Observing and measuring the dynamic changes that take place at the nanometer scale during the synthesis and operation of active nanostructures is … more

Understanding Flow Meters
Last Updated Date: 07/09/2015

Accurate flow measurements are needed for test fluids, temperatures, pressures, flows, and installation conditions that differ from those used … more

Smoke Stack Simulator
Last Updated Date: 07/08/2015

Today, inconsistencies between measured CO 2 emissions and emissions calculated from coal consumption are on the order of 10% to 20%. Either a … more

Acoustic Techniques in Fluid Metrology
Last Updated Date: 06/10/2015

The Fluid Metrology Group leads the world in designing and using gas-filled acoustic resonators for measuring the thermodynamic temperature T , … more

Transient Flow Facility
Last Updated Date: 06/10/2015

Today, demonstration vehicles are refueled with hydrogen from dispensers within 3 to 5 minutes using sequential gas releases from a bank of … more

NIST Standard Reference Simulation Website
Last Updated Date: 04/15/2015

The Standard Reference Simulation Website is an ongoing project whose aim is to provide well-documented simulation results for a variety of … more

Gas properties for flow metering
Last Updated Date: 04/10/2015

Flow meters that rely on measuring the pressure drop across a laminar flow element can be accurately calibrated using a benign surrogate gas (such … more

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