Research Of Micro CHP System Based On SOFC And PV

Fuel cell technology is one of the hotspots of the current hydrogen energy study.Solid oxide fuel cell is one of the most promising fuel cell technology and will become an important part in future electricity market.According to summaries of the current development situation about the analysis of solid oxide fuel cell combined heat and power system at home and abroad,a micro combined heat and power system based on photovoltaic and solid oxide fuel cell is explored and researched in this paper.The main research content and research results are summarized as follows:A mathematical model and a device system model of the solid oxide fuel cell are established by analysing the working principle and mechanism of power generation of the solid oxide fuel cell and studying power generation characteristics of the solid oxide fuel cell,accuracy of the system model under a fixed working condition and alterable working conditions is validated.Analysis and optimization have been done for the solid oxide fuel cell system model established before.The anaylsis focuses on fuel utilization factor,circulation ratio,overall utilization and net output power.A system net out power peak output is obtained.Furthermore,relationship between the net output power and efficiency is fitted.Optimization mainly focuses on inlet cell fuel and air temperature,cathode cooling,system heat dissipation and waste heat utilization here and there.At last,the optimized system shows increase in total and net electricity power conversion,total output power and net output power and so on.According to the mathematical model of solar energy and photovoltaic cell.The simulation process and method is made.According to the process,practical domestic photovoltaic power generation in a specific area can be acquired.Incorporating these results with solid oxide fuel cell system model results,a combined heat and power system able to meet users' requirement of heat and electricity is built.Economic research is done on the CHP system and payback time is assissed.It is also found through analysis that the system exhibits potential and advantages in economy,practicablity and energy conservation and environment protection.