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Economic Analysis of Integrated Energy Supply System Based on Solid Oxide Fuel Cell

In recent years, natural gas distributed energy systems have been vigorously developed due to their high energy efficiency, environmental friendliness and closeness to users. In this paper, a solid oxide fuel cell is used as the main power generation equipment for natural gas distributed energy. A 200kW cooling, heating and power triple supply system is designed to power a commercial user in Beijing. The results show that the system power generation efficiency is 53.3%, and the annual energy utilization efficiency is 88.32%, which is higher than system driven by combustion engine and gas turbine. Through the study of the three modes of system cooling season, heating season and transition season, the addition of system cooling and heating storage tank effectively increases the hourly supply of heating and cooling. At the same time, reducing the price of natural gas supply and increasing the life of solid oxide batteries will help improve system economics.