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http://dx.doi.org/10.7316/KHNES.2012.23.5.503

Measurement and Analysis of Coal Conversion Efficiency for a Coal Recirculating Fuel Cell Simulator  

Lee, Sangcho (Graduate Program, School of Mechanical Engineering, Pusan National University)
Kim, Chihwan (Hadong Thermal Power Plant, Korea Southern Power Co. (KOSPO))
Hwang, Munkyeong (Graduate Program, School of Mechanical Engineering, Pusan National University)
kim, Minseong (Graduate Program, School of Mechanical Engineering, Pusan National University)
Kim, Kyubo (Pusan Clean Coal Center (PC3), Pusan National University)
Jeon, Chunghwan (School of Mechanical Engineering, Pusan National University)
Song, Juhun (School of Mechanical Engineering, Pusan National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.23, no.5, 2012 , pp. 503-512 More about this Journal
Abstract
There is a new power generation system such as direct coal fuel cell (DCFC) with a solid oxide electrolyte operated at relatively high temperature. In the system, it is of great importance to feed coal continuously into anodic electrode surface for its better contact, otherwise it would reduce electrochemical conversion of coal. For that purpose, it is required to improve the electrochemical conversion efficiency by using either rigorous mixing condition such as fluidized bed condition or just by recirculating coal particle itself successively into the reaction zone of the system. In this preliminary study, we followed the second approach to investigate how significantly particle recycle would affect the coal conversion efficiency. As a first phase, coal conversion was analyzed and evaluated from the thermochemical reaction of carbon with air under particle recirculating condition. The coal conversion efficiency was obtained from raw data measured by two different techniques. Effects of temperature and fuel properties on the coal conversion are specifically examined from the thermochemical reaction.
Keywords
Fuel cell; Coal recirculation; Coal conversion efficiency; Solid oxide electrolyte;
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