21-25 July 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C3Or2C-05: Experimental performance of a Catalyzed Vortex Tube with Cryogenic Hydrogen

24 Jul 2019, 15:00
15m
Level 6, Room 22-23 ()

Level 6, Room 22-23

Speaker

Mr Carl Bunge (HYdrogen Properties for Energy Research (HYPER) Laboratory, Washington State University)

Description

Reducing liquid hydrogen boiloff from storage tanks is a key challenge facing the nascent hydrogen vehicle economy in addition to extended mission space-stage vehicles. However, the extreme cryogenic environment of liquid hydrogen necessitates novel refrigeration methods with components engineered for high-reliability. This paper presents initial experimental results of a Heisenberg Vortex Tube for cryogenic hydrogen cooling. The Heisenberg Vortex Tube is a modification of a conventional counter-flow vortex tube to incorporate a catalytic liner for parahydrogen-orthohydrogen conversion. Similar catalyzed and non-catalyzed vortex tubes are operated with pressure ratios up to 4, mass flow rates near 160 mg/s, and temperatures between 30-50 K. Experimental results demonstrate significant endothermic parahydrogen-orthohydrogen conversion as a function of cryogenic temperatures. Comparisons are made to 1st order models from literature as well as the predicted performance of a Joule-Thomson (J-T) expander operating under the same conditions. The results indicate a favorable drop-in replacement for conventional J-T expanders used in cryogenic liquid hydrogen applications.

Primary author

Mr Carl Bunge (HYdrogen Properties for Energy Research (HYPER) Laboratory, Washington State University)

Co-authors

Mr Elijah Shoemake (HYdrogen Properties for Energy Research (HYPER) Laboratory, Washington State University) Mr Wesley Johnson (NASA Glenn Research Center) Prof. Jacob Leachman (HYdrogen Properties for Energy Research (HYPER) Laboratory,Washington State University)

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