Development of a small-scale hydrogen liquefaction system

Title
Development of a small-scale hydrogen liquefaction system
Authors
나다니엘 가르소백종훈임창무김서영오인환강상우
Keywords
Hydrogen liquefier; Vacuum transfer line; Hydrogen storage; Ortho-para hydrogen converter; Nitrogen precooler
Issue Date
2015-09
Publisher
International journal of hydrogen energy
Citation
VOL 40, NO 35, 11872-11878
Abstract
A liquid hydrogen (LH2) storage tank, vacuumjacketed transfer line, and hydrogen liquefier have been designed, built, and coupled together to form a small scale hydrogen liquefaction plant. The liquefier was designed to liquefy at 1 L/hr at 3 bar with a single stage Gifford-McMahon cryocooler. The liquefier can hold up to 200 L of LH2 in a multi-layer insulated (MLI) vacuum jacketed storage tank. The liquefier includes two ortho-para hydrogen (OeP) converters, a liquid nitrogen precooler and a heat pipe. After liquefaction, LH2 can be transferred to a 5 L storage vessel using a flexible, MLI and vacuum insulated low loss transfer line. This storage vessel was designed to limit boil-off by using two 1 m long G10-CR necks to reduce conduction, a radiation shield and MLI with high vacuum to reduce radiation and convective heat leak from the outer shell to the inner tank. Presented in this paper are more detailed system configurations and results of various operational modes and applications.
URI
http://pubs.kist.re.kr/handle/201004/50221
ISSN
03603199
Appears in Collections:
KIST Publication > Article
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