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A Study on the Efficiency of Hydrogen-Oxygen Mixture Gas Generation Stack  

Lee, Sang-Ho (Hydrogen Energy Research Group, Korea Institute of Energy Research)
Moon, Il-Sik (Department of Chemical Engineering, Sunchon National University)
Kim, Chang-Hee (Hydrogen Energy Research Group, Korea Institute of Energy Research)
Kang, Kyoung-Soo (Hydrogen Energy Research Group, Korea Institute of Energy Research)
Park, Chu-Sik (Hydrogen Energy Research Group, Korea Institute of Energy Research)
Bae, Ki-Kwang (Hydrogen Energy Research Group, Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.17, no.4, 2006 , pp. 409-417 More about this Journal
Abstract
The characteristics of hydrogen-oxygen mixture gas generation stack was experimentally studied in terms of efficiency. For this purpose, the mixture gas generation stack was fabricated by connecting 7 cells in series following the Tero Ranta report. In order to avoid the instrument inaccuracy, all measuring equipments were re-tested and calibrated by Korea Laboratory Accreditation Scheme (KOLAS) certified laboratories. Since the amount of produced gas is most crucial in determining the efficiency, two gas collecting methods such as bottle trap method and wet gas meter method were adopted. From the experimental results, it was found that both KOH fume and steam evaporated along with hydrogen-oxygen mixture gas, and these by-product gases could cause the misestimation of the stack efficiency. The current, voltage, and energy efficiencies of the hydrogen-oxygen mixture gas generation stack was evaluated based upon the stack efficiency calculation method summarized in this work.
Keywords
hydrogen; oxygen; mixture gas; stack; efficiency;
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