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http://dx.doi.org/10.5916/jkosme.2015.39.7.765

A study on characteristics of SOFC/GT system for the supply gas flow rates  

Park, Sang-Kyun (Division of Marine Information Technology, Korea Maritime and Ocean University)
Lee, Joo-Hee (Space Science Research Team, Korea Aerospace Research Institute)
Park, Geong-Dae (Maritime Safety Reserarch Center, Korea Ship Safety Technology Authority)
Choi, Jae-Hyuk (Division of Marine System Engineering, Korean Maritime and Ocean University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.39, no.7, 2015 , pp. 765-772 More about this Journal
Abstract
In this research, the characteristics of SOFC/GT (Solid Oxide Fuel Cell/Gas Turbine) system temperature, stack power and system efficiency for flow rates of air, CH4 and water supplied to SOFC stack have been investigated. The temperature of the gas supplied to cathode and anode of SOFC stack in the SOFC/GT system are maintained by utilizing exhaust gas without the addition of external heat source. As a result, within the scope of this study, temperatures of gas supplied to cathode and anode of SOFC stack were maintained at 1000 (K) by utilizing the exhaust gas of the SOFC/GT system without the addition of external heat source. The system efficiency is increased with increase of air flow rate supplied to the stack and with decrease of $CH_4$ flow rate supplied to the stack. In addition, it can be found that the flow rate of the exhaust gas supplied to the turbine had a significant effect on the system efficiency. And the efficiencies of SOFC stack and SOFC/GT system depending upon various operating conditions of the SOFC/GT system is 51~57% and 57~73%, respectively.
Keywords
Solid oxide fuel cell; Gas turbine; System performance; Efficiency; Heat management;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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