셀 입구 예열방법에 따른 고체산화물 연료전지/가스터빈 하이브리드 시스템의 성능해석

Performance Analysis of Solid Oxide Fuel Cell/Gas Turbine Hybrid Systems for Different Cell Inlet Preheating Methods

Design analysis of the solid oxide fuel cell and gas turbine combined power system is performed considering different methods for preheating cell inlet air. The purpose of air preheating is to keep the temperature difference between cell inlet and outlet within a practical design range. Three different methods are considered such as a burner in front of the cell, a preheater in front of the cell and recirculation of the cathode exit gas. Analyses are carried out for two maximum cell temperature differences. The greater temperature difference ensures higher efficiency. The cathode exit gas recirculation exhibits better performance than other methods.