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http://dx.doi.org/10.7316/KHNES.2020.31.1.41

Thermodynamic Analysis of a Hydrogen Liquefaction Process for a Hydrogen Liquefaction Pilot Plant with a Small Capacity  

KIM, TAEHOON (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM))
CHOI, BYUNG-IL (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM))
HAN, YONG-SHIK (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM))
DO, KYU HYUNG (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM))
Publication Information
Transactions of the Korean hydrogen and new energy society / v.31, no.1, 2020 , pp. 41-48 More about this Journal
Abstract
The present study discussed the thermodynamic analysis of the hydrogen liquefaction process to build a hydrogen liquefaction pilot plant with a small capacity (0.5 ton/day). A 2-stage Brayton cycle utilizing LNG/LN2 cold energy was suggested to be built in Korea for the hydrogen liquefaction pilot plant with a small capacity. Thermodynamic analysis on the effect of various variables on the efficiency of hydrogen liquefaction process was performed. As a result, the CASE in which the ortho-para conversion catalyst was infiltrated inside the heat exchanger showed the best process efficiency. Finally, thermodynamic analysis was performed on the effect of turbo expander compression ratio on the hydrogen liquefaction process and it was confirmed that an optimal turbo expander compression ratio exists.
Keywords
Liquid hydrogen; Hydrogen liquefaction; Thermodynamic analysis; Ortho-para conversion; Pilot plant;
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Times Cited By KSCI : 6  (Citation Analysis)
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