Transactions of Society of Automotive Engineers of Japan
Online ISSN : 1883-0811
Print ISSN : 0287-8321
ISSN-L : 0287-8321
Study of Temperature Changing of Container and Conponents during the Discharging of Hydrogen
Hirohiko ItoiYasumasa MaedaYousuke TamuraHiroyuki Mitsuishi
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2011 Volume 42 Issue 4 Pages 941-944

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Abstract
Discharging the hydrogen gas filled in the high pressurized hydrogen container onboard causes hydrogen adiabatic expansion to change the temperature of the container, components and devices installed in the discharge line.In this study, changes in temperature of container and components were measured during the discharge of hydrogen gas from initial pressure of 70MPa.The results are as follows: 1) The temperature drop of inside of container, boss of container and pressure regulator were -43C, -27C and -24C respectively when hydrogen gas was discharged from 70MPa with a flow rate of 200NL/min. 2) At the beginning of discharge, the rapid increase in hydrogen gas temperature about +20C was observed and then the temperature dropped.
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© 2011 Society of Automotive Engineers of Japan, Inc.
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