Abstract
When change of hydrogen(H2) gas concentration in a certain point is measured, non-contact measurement technology with high temporal and spatial resolution is necessary. In this study, H2 concentration in the small area of <1cm2 under the gas flow was measured by using a Raman lidar. Raman scattering light at the measurement point of 750mm ahead was detected by the Raman lidar. As a result, it was proved that the H2 concentration of more than 100ppm could be successfully measured.
Highlights
Hydrogen is expected to become a clean energy in next-generation
When change of hydrogen gas concentration in a certain point is measured, a gas sensor is fixed at the measurement point, or a syringe is utilized to sample the gas, and it is analyzed by a gas chromatography
Non-contact measurement technology with high temporal resolution and high spatial resolution is necessary to measure at such a small area
Summary
Hydrogen is expected to become a clean energy in next-generation. Various proof examinations are carried out to create the hydrogen society. From such a background, the demand for hydrogen gas measurement is drastically increasing. When change of hydrogen gas concentration in a certain point is measured, a gas sensor is fixed at the measurement point, or a syringe is utilized to sample the gas, and it is analyzed by a gas chromatography. The gas sensor and the syringe have influence on gas flow and its measurement values. Non-contact measurement technology with high temporal resolution and high spatial resolution is necessary to measure at such a small area
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