Jongrok Kim
Pohang University of Science and Technology
34 Papers
57 Citations
Jongrok Kim is an academic researcher from Pohang University of Science and Technology. The author has contributed to research in topics: Thermal hydraulics & Loss-of-coolant accident. The author has an hindex of 8, co-authored 30 publications.
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Papers
Experimental approaches for distribution and behavior of water in PEMFC under flow direction and differential pressure using neutron imaging technique
TaeJoo Kim,TaeJoo Kim,Jongrok Kim,Cheulmuu Sim,Seung Wook Lee,Massound Kaviany,Sang Young Son,Moo Hwan Kim +7 more
TL;DR: In this article, a 3-parallel serpentine single PEMFC with an active area of 25 cm2 and a flow channel cross-section of 1×1mm was constructed at the National Institute of Standards and Technology (NIST).
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Measurement of void fraction and bubble speed of slug flow with three-ring conductance probes
TL;DR: In this article, the void fraction, shape, and velocity of a single slug bubble in a vertical 25.4mm-diameter circular tube equipped with two three-ring conductance probes were measured.
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Fuel crossover and internal current in polymer electrolyte membrane fuel cell from water visualization using X-ray radiography
TL;DR: Using X-ray radiography, the water distribution and membrane swelling, which indicate fuel crossover and internal current, in an operating polymer electrolyte membrane fuel cell under open-circuit conditions were examined in this article.
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Single-phase convective heat transfer enhancement by spacer grids in a rod bundle
Sang-Ki Moon,Jongrok Kim,Seok Cho,Byoung Jae Kim,Jong Kuk Park,Young-Jung Youn,Chul-Hwa Song +6 more
TL;DR: In this article, an experimental study in a 6×6 rod bundle has been performed to investigate the effects of spacer grids on the single-phase convective heat transfer enhancement.
18
Breakthrough/drainage pressures and X-ray water visualization in gas diffusion layer of PEMFC
TL;DR: The primary role of the gas diffusion layers (GDLs) in polymer electrolyte membrane fuel cells (PEMFC) is to maintain the delicate balance between water retention and removal in GDLs as mentioned in this paper.
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