Abstract
With the requirements of high efficiency and low emissions, fuel cell has been one of the focuses of research in energy development. The Solid Oxide Fuel Cell (SOFC) is of high temperature fuel cell type. It has the characteristic of high emission temperature(about 1000℃). Besides the main advantage that the SOFC has high efficiency performance, 45~65%, the quality of the exhaust is also very high. Current studies point out that the combination of SOFC and Gas Turbine (GT) can produce efficiency more than 70%, and the exhaust temperature of this hybrid power system is as high as 300~500℃. If this waste heat can be further recycled, the overall efficiency of the system is expected to be further improved. The simulation program of SOFC and the introduction of the concept of Combine Cooling Heating and Power System (CCHP) is used in this study. The waste heat of the SOFC/GT hybrid power generation system is used as the heat source to drive an Absorption Refrigeration System (ARS), which enables the waste heat to generate electricity in the system while providing additional cooling capacity. With this configuration, the Fuel Usability of the system can be above 100%. We not only predict the CCHP performance by using the design data points, but also conclude important parameters that affect the performance of the system by optimizing and configuring subsystems of CCHP. Finally, the CCHP analysis simulation system which combines SOFC, GT, and ARS is completed. This system can provide future reference in high efficiency clean electricity and heat, cooling, and electrical tri-generation system.