Details

Autor(en) / Beteiligte

• Matveev, Konstantin I.
• Leachman, Jacob W.

Titel

Thermoacoustic Flow-Through Cooler for Cryogenic Hydrogen

Ist Teil von

• Computer Aided Chemical Engineering, 2022, Vol.49, p.1891-1896

Erscheinungsjahr

2022

Beschreibungen/Notizen

• As hydrogen is becoming an increasingly important energy carrier for renewable energy systems, a need for efficiency improvements of hydrogen cooling and liquefaction rises as well. An additional challenge associated with these processes in cryogenic conditions is the exothermic conversion between ortho and para isomers of hydrogen, which requires removing extra heat and accelerating this reaction with catalysis. In this paper, a new system with flowing-through hydrogen and elegantly combined thermoacoustic heat pump and catalytic regenerator is analyzed using thermoacoustic theory. Calculations with variable channel sizes in a regenerator and acoustic impedances are conducted for standing-wave and travelling-wave variants of this system. The corresponding optimal second-law efficiencies of these setups are estimated to be about 0.3 and 0.6. The throughput of cooled hydrogen is assessed for systems with catalyzed and non-catalyzed regenerators.