Speaker
Description
Hydrogen Detection from Distance
Arne Walter, Matthias Hollmann, Frank Duschek
DLR (German Aerospace Center), Institute of Technical Physics, Im Langen Grund 1, 74239 Hardthausen, Germany
Contact: Frank.Duschek@dlr.de
Green hydrogen is regarded as an important carrier of clean energy for the upcoming decades. Gas leakage from infrastructures like pipelines and storages is discussed with regard to the effects of H2 emissions on atmospheric chemistry as well as general safety issues. While accumulations in buildings can be detected with standard gas sensors, coverage of larger areas is an important issue. To address this need for a standoff sensing technology, we adapted a chlorine gas sensor based on spontaneous Raman scattering. In the present work, the development steps from the model to the retrieval of experimental spectra are described. Eventually, the system was modified to a UV Raman LIDAR for the detection of low percentages of hydrogen in air (1-10%) at distances of 20-100 m. Finally, potential applications and scientific challenges such as the suppression of interfering topographic background signals are discussed.
