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http://dx.doi.org/10.7316/KHNES.2020.31.6.596

Operation Characteristics According to Steam Temperature and Effectivenss of External Steam-Related SOEC System  

KIM, YOUNG SANG (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
LEE, YOUNG DUK (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
AHN, KOOK YOUNG (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
LEE, DONG KEUN (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
LEE, SANG MIN (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
CHOI, EUN JUNG (Department of Clean Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
Publication Information
Transactions of the Korean hydrogen and new energy society / v.31, no.6, 2020 , pp. 596-604 More about this Journal
Abstract
Solid oxide electrolysis cell (SOEC) attracts much attention because of its high energy efficiency among many water-electrolysis technologies. SOEC operates at temperatures above 700℃, so that the water required for water-electrolysis must be supplied in the form of steam. When the steam to be supplied to the SOEC is generated by the SOEC system itself, an enormous amount of latent heat is required to vaporize the water, so additional energy must be supplied to the SOEC system. On the other hand, if the steam can be supplied from the outside, a small amount of energy is required to raise the temperature of the low temperature steam, so that the SOEC system can be operated without additional energy supply from outside, which enables efficient water-electrolysis. In this study, we figure out the size of heat exchanger for various steam temperature and effectiveness of heat exchanger, and propose the energy efficiency of the system.
Keywords
SOEC; Steam; Electrolysis; BOP; Effectiveness;
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Times Cited By KSCI : 4  (Citation Analysis)
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