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Related Experiment Video

Updated: May 6, 2026

Measurement of Outgassing Rates of Steels

Measurement of Outgassing Rates of Steels

Published on: December 13, 2016

In situ gas analysis for high pressure applications using property measurements.

J Moeller¹, R Span, T Fieback

¹Experimental Thermodynamics, Ruhr-University Bochum, Bochum 44801, Germany.

The Review of Scientific Instruments

|November 5, 2013

Summary

A new method analyzes biogas and hydrogen mixtures at high pressures using optical, thermal, and electromagnetic sensors. This technique accurately determines gas composition for renewable energy applications.

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Last Updated: May 6, 2026

Measurement of Outgassing Rates of Steels

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Area of Science:

Chemical Engineering
Materials Science
Physical Chemistry

Background:

Renewable energy fuel production, distribution, and storage often occur under high pressures.
A market gap exists for in situ high-pressure gas analysis instruments.
Accurate real-time composition analysis is crucial for optimizing these processes.

Purpose of the Study:

To develop a novel method for in situ high-pressure gas analysis.
To enable accurate composition determination of biogas and hydrogen-containing gas mixtures.
To address the need for specialized analytical tools in renewable energy infrastructure.

Main Methods:

Developed new high-pressure sensors for in situ measurement.
Measured optical, thermophysical, and electromagnetic properties of gas mixtures.
Utilized iterative calculations with accurate equations of state for gas mixture compositions.

Main Results:

Successfully determined gas compositions with deviations below 1.9 mol. %.
Achieved accuracy below 1 mol. % in most tested cases.
Validated the method using three distinct gas mixtures across various pressures and temperatures.

Conclusions:

The developed method provides accurate in situ analysis of high-pressure gas mixtures.
This technique is suitable for monitoring renewable energy-based fuels like biogas and hydrogen.
The findings contribute to the advancement of process control and safety in the renewable energy sector.